Excalibur Multirate DAP Installation and Operation 15D09B-1/D Milgo Solutions, Inc. 1619 N. Harrison Parkway P.O. Box 407044 Fort Lauderdale, FL 33340-7044 Internet: http://www.milgo.
Warranty The period of warranty for the Excalibur Multirate DAP starts on the date of sale to the original end user and extends one year. Refer to Milgo Solutions, Inc. Limited Warranty for details. Milgo Solutions requires a Return Material Authorization (RMA) prior to the return of any equipment under the provisions of the warranty. Please contact your authorized reseller or the nearest Milgo support center for details. Fourth Edition, June, 1995 Excalibur and CMS are trademarks of Milgo Solutions, Inc.
Milgo Solutions Customer Information Contacts CORPORATE HEADQUARTERS Milgo Solutions, Inc. 1619 North Harrison Parkway Sunrise, Florida 33323-2802, U.S.A. Tel: (954)-846-1601/(800)-333-4143 Fax: (954)-846-3935 Internet: http://www.milgo.
MILGO AFFILIATE SUPPORT CENTERS: ASIA/PACIFIC Region Milgo Solutions (Hong Kong), Ltd. Sun House 6th Floor 181 Des Voeux Road, Central Hong Kong Tel: 852-2815-1886 Fax: 852-2815-2895 Milgo Solutions (Hong Kong) supports: • China (southern provinces) • Japan • Korea • Hong Kong • Macau • Taiwan Milgo Solutions (Singapore) Pte Ltd.
About This Manual Manual Description This Excalibur Multirate DAP (Digital Access Product) Installation and Operation manual provides the information you need to properly install, operate, and troubleshoot this DAP. It has been written with the assumption that you are familiar with basic data communications principles and terminology.
About This Manual Terminology and Conventions The following typographical conventions are used in this manual: • References to labeled parts of a device, such as buttons and connectors, are shown in boldface. For example: The DL connector is located on the DAP’s rear panel. • References to text that appears on the control panel LCD screen are shown in this font. For example: Press the button beneath Serve to enter the Service menu.
Table of Contents Chapter 1 - Introduction Introducing the Excalibur Multirate DAP ........................................................................................................ 1-1 Operating Modes .............................................................................................................................................. 1-1 Models.......................................................................................................................................................
Table of Contents Call Answering.......................................................................................................................................... 2-8 Call Disconnection .................................................................................................................................... 2-9 Switched 56 Integral Dial Operation ...............................................................................................................
Table of Contents Establishing Password Protection .................................................................................................................... 4-8 Entering the Password ............................................................................................................................... 4-8 Changing the Password.............................................................................................................................. 4-9 Locking Front Panel Functions....
Table of Contents Naming Channels .................................................................................................................................... 5-27 Port Rate Configuration ................................................................................................................................. 5-30 RCP Parameters ............................................................................................................................................. 5-32 Controller .......
Table of Contents Dial Mode ................................................................................................................................................ 5-51 Transmit Clock ........................................................................................................................................ 5-51 Call Progress............................................................................................................................................ 5-51 Automatic Dial...
Table of Contents DDS Loop Test ......................................................................................................................................... 7-6 Digital Loop Test ...................................................................................................................................... 7-6 V.54 Digital Loop Test..............................................................................................................................
Table of Contents Figures 1-1 1-2 1-3 1-4 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 4-1 4-2 4-3 4-4 5-1 7-1 7-2 7-3 7-4 7-5 7-6 7-7 7-8 7-9 7-10 7-11 7-12 Typical Excalibur Multirate DAP Multimode Applications ............................................................... 1-2 Excalibur Card Carrier ........................................................................................................................ 1-5 Typical Menu Display............................................................
Table of Contents 3-9 3-10 3-11 3-12 5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9 5-10 5-11 5-12 5-13 5-14 5-15 5-16 6-1 6-2 7-1 xiv External Alarm Connector, Pin/Signal Assignments........................................................................ 3-15 Jumper Settings................................................................................................................................. 3-18 Switchbank and Switch Settings...............................................................................
Important Safety Instructions 1. Never install telephone wiring during a lightning storm. 2. Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations. 3. Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the network interface. 4. Use caution when installing or modifying telephone lines. 5. Avoid using a telephone (other than a cordless type) during an electrical storm.
Test scape Top User 1 2 3 4 xcalib ur DA P Excalibur Multirate DAP
Chapter 1 Introduction Introducing the Excalibur Multirate DAP The Excalibur Multirate DAP (Digital Access Product) provides a versatile interface between your data terminal equipment (DTE) and all the digital data services. Efficient and economical performance is provided in both point-to-point and multipoint network configurations. The DAP operates at digital line speeds of 2.4, 4.8, 9.6, 19.2, 56, and 64 Kbps.
Excalibur Multirate DAP Installation and Operation • Clear Channel 64 Kbps - operates on the Clear Channel 64 Kbps service offered by Accunet Spectrum of Digital Services (ASDS®) and provides 64 Kbps to use for data. An interruptive secondary channel is provided. When the secondary channel is in use, 57.6 Kbps is available for data.
Introduction Table 1-1. Excalibur Multirate DAP Part Numbers Part Number Description 15-09B112001xx RS-232-E DAP, Standalone, Aggregate Card Part No. 15P09AA-6 15-05B213000xx RS-232-E DAP, Central Site (CS-1), Aggregate Card Part No. 15P0501D-3 15-05B313000xx RS-232-E DAP, Central Site (CS-2), Aggregate Card Part No. 15P0501D-3 15-09B512001xx RS-232-E/CCITT V.35 DAP, Standalone, Aggregate Card Part No. 15P09AA-6 15-05B613000xx CCITT V.35 DAP, Central Site (CS-1), Aggregate Card Part No.
Excalibur Multirate DAP Installation and Operation Table 1-1. Excalibur Multirate DAP Part Numbers (Continued) Part Number Description 15-05B613B00xx CCITT V.35 with Switched 56 IDBU DAP, Central Site (CS-1), Aggregate Card Part No. 15P0501D-3 15-05B713B00xx CCITT V.35 with Switched 56 IDBU DAP, Central Site (CS-2), Aggregate Card Part No. 15P0501D-3 15-09B112C01xx RS-232-E with ISDN U IDBU DAP, Standalone, Aggregate Card Part No.
Introduction Central Site Model The central site Excalibur Multirate DAP consists of a printed circuit (p.c.) card and a transition board (vertical rear panel) that are designed to be housed in the high-density Excalibur Card Carrier (Figure 1-2). Each card carrier can house up to 16 p.c. cards. Six card carriers, holding up to 96 single port Excalibur Multirate central site DAPs, can be installed in a single 6-foot rack.
Excalibur Multirate DAP Installation and Operation Standard Features The Excalibur Multirate DAP comes with a full complement of standard features, as described in the following sections. Menu-Driven Front Panel Display The Excalibur Multirate DAP has a menu-driven front panel display that makes monitoring, configuring, and testing the DAP quick and easy.
Introduction Password Protection The Excalibur Multirate DAP provides a password protection feature to prevent users from accessing certain front panel functions. This feature enables you to lock out any or all of the following functions to users who do not enter the proper password: configuration (including secondary channel configuration), remote unit control, dial backup operation, diagnostic testing, the Digital Data Service mode, and the T7 address.
Excalibur Multirate DAP Installation and Operation • End-to-End Error • DDS Loop • Digital Loop, standard and V.54 • V.54 Loop 2 and L2 Error (V.54 Loop 2 not available for DDS with interruptive secondary channel mode) • Local-Error • Network-Error In addition to these operator-initiated tests, the Excalibur Multirate DAP automatically runs an internal self-test each time it is powered up. This test verifies the functionality of the DAP's internal circuitry.
Introduction Asynchronous/Synchronous Conversion The Excalibur Multirate DAP can be set to operate with asynchronous or synchronous DTEs. When operating with asynchronous DTEs, the DAP converts the data into a synchronous format using the method specified in CCITT Recommendation V.14. The converter protects against data loss by compensating for small data rate differences between the DTE and the DAP. CMS DSU Compatibility The Excalibur Multirate DAP can operate with Milgo's CMS DSU products.
Excalibur Multirate DAP Installation and Operation • Event files - keep a record of all significant network events (alarms, tests, etc.). • Network management reports - consolidate network status information so that you can analyze your network's overall performance. Reports can be generated on every major database item. • Network diagnostics - scan all CMS-compatible components in the network, reporting any irregular conditions. Tests can be run on any network component from the central site console.
Introduction • The extended range feature can be enabled from the front panel for all DTE rates when the service is set for LADC or LDM. For all other services, it can be enabled when the DTE rate is 19.2 Kbps or greater. Extended range operation is automatic for units equipped with the Model D or 15P09AA-1 Aggregate card. Options The Excalibur Multirate DAP provides several options to meet your specific network requirements. The options are described in the following sections.
Excalibur Multirate DAP Installation and Operation CPU EXCALIBUR DAP DIGITAL LINE FAILURE EXCALIBUR DAP DTE DIAL BACKUP LINE Figure 1-4. Dial Backup Connection Switched 56 IDBU operates at 56 Kbps over MCI's Switched 56 Service, AT&T's Accunet Switched 56 Service, or Sprint's Enhanced Switched 56 Service, which does not require suppression of echo cancelers.
Introduction The ISDN IDBU supports AT&T 5ESS, NTI DMS-100, and National ISDN-1 switch types. Appendix B provides a checklist to use when ordering Basic ISDN Service from your local telephone company. Model for EDRS The Excalibur Multirate DAP is also available in a model designed to operate with the Excalibur Dial Restoral System (EDRS). This model is called an Excalibur Multirate Dedicated Access Device (DAD).
Chapter 2 Operating Modes Overview This chapter provides information about each operating mode and how it functions. It includes a detailed description of secondary channel operation, integral dial operation, and asynchronous/synchronous conversion. Interruptive Secondary Channel (Basic DDS) The Interruptive Secondary Channel (Basic DDS) operating mode provides an interruptive secondary channel.
Excalibur Multirate DAP Installation and Operation Note: Either the RCP feature or the CMS network management system can use the secondary channel. Both should not be active simultaneously. The DAP with interruptive diagnostics has two basic modes of operation: • Normal - In the Normal mode, data transfer between the DTE and DDS (main channel data) is allowed to pass unrestricted through the DAP.
Operating Modes Main Channel Interruption Main channel interruption is the one significant effect interruptive diagnostics has on network operation. Because the unit blocks main channel traffic, you will have to take the necessary precautions to ensure the minimal impact on your network operations when interruptive diagnostics are being used.
Excalibur Multirate DAP Installation and Operation Non-Interruptive Secondary Channel (Basic DDS and Clear Channel 64 Kbps) The Basic DDS Non-Interruptive Secondary Channel (DDSNI) and the Clear Channel 64 Kbps Non-Interruptive Secondary Channel (C64NI) modes provide a non-interruptive secondary channel over basic DDS or Clear Channel 64 lines in exchange for a small amount of bandwidth. The DDSNI mode can operate in both point-to-point and multipoint network configurations.
Operating Modes Clear Channel 64 Kbps The Clear Channel 64 Kbps (CC64) mode operates on the Clear Channel 64 Kbps service offered by ASDS. This service provides 64 Kbps to use for data. An interruptive secondary channel is provided. When the secondary channel is in use, 57.6 Kbps is available for data. Note: The CMS network management system can communicate with the central unit.
Excalibur Multirate DAP Installation and Operation Table 2-2. Clear Secondary Channel Rates DDS Line DDS-SC, LDM, LADC1 DDSNI, C64NI 2.4 Kbps 75 bps 75 bps 4.8 Kbps 75, 150 bps 75 bps 9.6 Kbps 75, 150, 300 bps 75, 150 bps 19.2 Kbps 75, 150, 300, 6002 bps 75, 150, 300 bps 56 Kbps 75, 150, 300, 6002, 12002 bps 75, 150, 300 bps 64 Kbps Not Applicable 75, 150, 300 bps 1. LADC is only available for units equipped with the Model A or C Aggregate card. 2.
Operating Modes Two user-selectable modes of operation are available: • V.32bis - compliant with CCITT recommendations. This mode does not support a secondary channel. Therefore, if the unit is a remote and a CMS link exists during normal operation (all operating modes except CC64), the link is lost when the unit is in dial backup operation. • V.32bis+ - an enhanced Milgo mode which supports a secondary channel. Secondary channel data is transmitted using a constellation multiplexed scheme.
Excalibur Multirate DAP Installation and Operation 2. When the answering DAP detects a ringing signal on the dial line, it answers the call. 3. A handshake takes place between the originating and answering units to verify the connection. 4. If the handshake is successful, the DAPs are connected to the dial line.
Operating Modes The DAP constantly monitors the dial line for a ringing signal. When ringing is detected, the DAP automatically answers the call in response to the selected condition. When the dial backup connection is successfully established, the DAP displays the message Switched To Dial on the front panel followed by an audible beep.
Excalibur Multirate DAP Installation and Operation The Clear Secondary Channel feature is provided during dial backup operation. The only restriction is that the 600 and 1200 bps channel rates are not available when the Switched 56 IDBU option is installed.
Operating Modes • When calls have been successfully connected. • Whether the dial line is connected or disconnected. • Call progress information (ringing, busy signal) when the DAP is connected to Sprint's Enhanced Switched 56 Service. Call Establishment When the dial backup connection is initiated and automatic dial is enabled on the originating DAP, the answering DAP's primary telephone number is dialed.
Excalibur Multirate DAP Installation and Operation Manual call disconnection requires that you enter commands through the DAP's front panel or the CMS system console. The DAP then switches transmission back to the dedicated line. ISDN Integral Dial Operation The Excalibur DAP's ISDN IDBU feature enables both the primary and secondary channels to transmit data across the dial-up telephone line when the dedicated line fails. The DTE data rate can not be selected when the DAP is in dial backup operation.
Operating Modes • DDS Down - DDS goes down due to Out of Service codes, Abnormal Station codes, loss of multiport framing, or loss of network framing for a user-selectable time period. • No Signal - an invalid DDS signal is received from the network. • Network Down - the DAP dials after the DDS network goes down or an invalid signal is received from the network. • DTR - the DAP dials when the DTR signal is active. This setting allows external routers and FRADs to originate dial backup calls.
Excalibur Multirate DAP Installation and Operation • Always - the DAP always answers calls. • DDS Line or Local Loop Down - the DAP only answers calls when the DDS line goes down (due to Out of Service codes, Abnormal Station codes, loss of multiport framing, or loss of network framing) or when an invalid DDS signal is received from the network. • No Signal - the DAP only answers calls when an invalid DDS signal is received from the network.
Operating Modes If the transmitting DTE sends characters to the port at a slightly faster rate than the DAP removes them, the DAP deletes stop bits from the incoming characters. If the transmitting DTE sends characters to the port at a slower rate than they are removed, the DAP inserts extra stop bits between characters. At the receiving end, if the DAP receives characters at a faster rate than they are passed to the DTE, the DAP reduces the length of a stop bit.
Chapter 3 Installing the DAP Overview The following steps must be completed to install the Excalibur Multirate DAP: 1. Place the unit in a suitable location. 2. Connect the unit to the DTE, telephone lines, and accessory equipment. 3. Set the jumpers on the printed circuit (p.c.) card. 4. Connect the power supply to the DAP and the AC power outlet. This chapter explains how to perform each of these procedures.
Excalibur Multirate DAP Installation and Operation Cable Connections After the DAP has been placed in a suitable location, the necessary cable connections can be made. All interface connectors are located on the DAP's rear panel as shown in Figure 3-1. POWER NMI EXT ALM DED SW56 DL DTE Figure 3-1. Excalibur Multirate DAP Rear Panel Connecting to the DTE The Excalibur Multirate DAP provides a 25-pin RS-232-E female connector, labeled DTE, for connecting to the DTE.
Installing the DAP POWER NMI EXT ALM DED SW56 DL DTE TO DTE Figure 3-2. RS-232 DTE Connection POWER NMI EXT ALM DED SW56 DL Figure 3-3. V.
Excalibur Multirate DAP Installation and Operation Table 3-1. RS-232 DTE Connector, Pin/Signal Assignments Pin No. CCITT V.24 Symbol RS-232 Symbol Input/ Output 1 101 – – 2 103 BA Input 3 104 BB Output 4 105 CA Input 5 106 CB Output Clear-to-Send (CTS). Indicates DAP is ready to transmit data. 6 107 CC Output Data Set Ready (DSR). Indicates DAP operating normally, ready to transmit and receive data. 7 102 AB – Signal ground. Common ground reference for all circuits.
Installing the DAP Table 3-1. RS-232 DTE Connector, Pin/Signal Assignments (Continued) Pin No. * CCITT V.24 Symbol RS-232 Symbol Input/ Output 14 118 SBA Input 15 114 DB Output Transmit Clock. 16 119 SBB Output Secondary Channel Receive Data. 17 115 DD Output Receive Clock. 18 141 LL Input Local Digital Loopback. An On condition places the DAP into a Digital Loop test. 19A* 120 SCA Input Secondary Channel RTS. Used with remote site units.
Excalibur Multirate DAP Installation and Operation Table 3-2. V.35 DTE Connector, Pin/Signal Assignments Pin CCITT V.
Installing the DAP • If the dedicated line outlet is a terminal block, use Cable Part No. 5956-158S. This cable has an 8-pin plug at one end and four spade lugs at the other end. Both of these cables are provided with your DAP. Figure 3-4 shows both types of dedicated line connections. Table 3-3 lists the pin/signal assignments for the DED connector. (The leftmost pin is designated pin 1.) SPECIAL NOTICE Important governmental requirements are listed in the front of this manual.
Excalibur Multirate DAP Installation and Operation Table 3-3. Dedicated Line Connector, Pin/Signal Assignments Pin No. Signal Input/ Output Function 1 Transmit Ring (R) Output Connection to the telephone line, transmit side. 2 Transmit Tip (T) Output Connection to the telephone line, transmit side. 3 No Connection – – 4 No Connection – – 5 No Connection – – 6 No Connection – – 7 Receive Tip (T1) Input Connection to the telephone line, receive side.
Installing the DAP POWER NMI EXT ALM DED SW56 DL DTE TO TELCO JACK FOR ANALOG IDBU OR TO ISDN BASIC RATE U-INTERFACE FOR ISDN IDBU Figure 3-5. Analog or ISDN Dial Line Cable Connections Table 3-4. Analog Dial Line Cable Connector, Pin/Signal Assignments Pin No. Signal Input/ Output Function 1 Not Used – – 2 Not Used – – 3 Not Used – – 4 Ring Bidirectional Connection to the dial line. 5 Tip Bidirectional Connection to the dial line.
Excalibur Multirate DAP Installation and Operation Connecting to the ISDN Dial-UP Line The Excalibur Multirate DAP has an 8-pin modular jack labeled DL for connecting to the ISDN dial-up telephone line. Contact your telephone company to determine the correct cable to use: • Cable Part No. 5956-149G-10 - this cable has 8-pin modular plugs at both ends. • Cable Part No. 5956-149A-10 - this cable has 6-pin modular plugs at both ends.
Installing the DAP Connecting to the Switched 56 Dial-Up Line The Excalibur Multirate DAP has an 8-pin modular jack labeled SW56 for connecting to the Switched 56 dial-up telephone line. Contact your telephone company to determine the correct cable to use: • Cable Part No. 5956-149G-10 - this cable has 8-pin modular plugs at both ends. • Cable Part No 5956-158S-10 - this cable has an 8-pin modular jack at one end and four spade lugs at the other end.
Excalibur Multirate DAP Installation and Operation Table 3-6. Switched 56 Dial Line Cable Connector, Pin/Signal Assignments Pin No. Signal Input/ Output 1 Transmit Ring Output Connection to the telephone line, transmit side. 2 Transmit Tip Output Connection to the telephone line, transmit side. 3 Not Used – – 4 Not Used – – 5 Not Used – – 6 Not Used – – 7 Receive Tip Input Connection to the telephone line, receive side.
Installing the DAP Table 3-7. Network Management System Connector, Pin/Signal Assignments Pin No. Signal Input/ Output Function 1 Not Used – – 2 Signal Ground – Common ground. 3 Secondary Channel Receive Data Output Serial data to CMS system. 4 Secondary Channel Data Carrier Detect Output Indicates that secondary channel signals are being received. 5 Power Fail Indicator Output If DAP loses power, it drops the signal on this pin. This alerts the connected device to the power failure.
Excalibur Multirate DAP Installation and Operation To make this connection to the DTE connector, you must order Cable Part No. 5956-37C from Milgo. This cable has one RS-232 25-pin connector at one end that plugs into the DAP's RS-232 DTE connector and two (one for the primary channel, the other for the secondary channel) RS-232 25-pin connectors at the other end. This cable provides secondary channel CTS. The pin/signal assignments for this connector are identical to those listed in Table 3-1. Table 3-8.
Installing the DAP To make this connection, you must order Cable Part No. 5956-178G from Milgo. One end of this cable has a 10-pin connector that plugs into the EXT ALM jack. The other end of this cable must be fitted with a connector appropriate to the alarm device at the time of installation. Table 3-9 lists the pin/signal assignments for this connector. (The leftmost pin is designated pin 1.) Table 3-9. External Alarm Connector, Pin/Signal Assignments Pin No.
Excalibur Multirate DAP Installation and Operation Setting the Jumpers The Excalibur Multirate DAP has six jumpers, labeled JS1 to JS6, that define the functions of certain pins on the DTE connector for RS-232 operation. The dual interface DAP also has a 12-position shunt jumper that sets the interface to either RS-232 or V.35. The jumpers are located on the p.c. card. To access the jumpers, remove the DAP's top cover by following these steps: 1. Loosen the two screws located on the top of the unit.
Installing the DAP The interface is factory set for V.35 with the 12-position shunt jumper installed on X4 V.35. To change the interface to RS-232, remove this jumper and install it on X5 RS232 as shown in Figure 3-8. Note: The Interface parameter in the DAP Configuration submenu must be set manually through the DAP's front panel to match the jumper setting. Figure 3-8 shows the JS1 to JS6 jumper locations on the p.c. card. Table 3-10 lists each jumper setting and its respective function.
Excalibur Multirate DAP Installation and Operation Table 3-10. Jumper Settings Jumper Setting JS1 3 to 1 Pin 19 = Secondary channel RTS (input). Use for Clear Secondary Channel. 3 to 2 Pin 19 = Digital Power Failure output. Use at central site unit. 3 to 1 Pin 23 = Signal Indicator (output). Active when the DDS line is available. Inactive when the DDS line is lost. 3 to 2 Pin 23 = No function (input).
Installing the DAP Note: If no connection to the DTE interface is desired, remove the jumper controlling the respective pin. Setting the Pin Assignment Switches Central site versions of the Excalibur Multirate DAP have three switchbanks, labeled S1 to S3, that define the functions of certain pins on the DTE connector for RS-232 operation. The switchbanks are located on the Aggregate transition board. Table 3-11 lists the switch settings and respective functions for each switchbank.
Excalibur Multirate DAP Installation and Operation Table 3-11. Switchbank and Switch Settings Switchbank and Switch Settings S1 1 S2 1 S3 2 1 Function Selected 2 Up Secondary channel control signals pass through the DTE connector. Typically used when the DAP is connected to a CMS system. Down Secondary channel control signals do not pass through the DTE connector. Typically used to isolate the secondary channel signals from the DTE.
Installing the DAP Table 3-12. Switch Settings, Older Standalone and Central Site DAPs Switch SW1 SW2 SW3 SW4 SW5 Up Function Selected Secondary channel control signals pass through the DTE connector. Typically used when the DAP is connected to a CMS system. Down Secondary channel control signals do not pass through the DTE connector. Typically used to isolate the secondary channel signals from the DTE. Up Up Pin 12 = Secondary Channel DCD; Pin 19 = Digital Power Failure output.
Excalibur Multirate DAP Installation and Operation Aggregate Transition Board Headers The RS-232 Aggregate transition board has four headers, labeled X1 to X4, that come from the factory set as follows. Do NOT change these settings. Header X1 X2 X3 X4 Setting Out In Out In Selection Not Used Single Port Not Used Single Port The V.35 Aggregate transition board has six headers, labeled X1 to X6, that come from the factory set as follows. Do NOT change these settings.
Installing the DAP SWITCHBANK S1 SWITCHBANK S2 HEADER HEADER X3 X4 HEADER HEADER X5 X6 Figure 3-9. DBB Switchbank and Header Locations On RS-232 DBBs, an additional 2-position switchbank, labeled S2, allows you to define the functions of certain pins on the DTE connector.
Excalibur Multirate DAP Installation and Operation Connectors The interface connectors for the DAD are arranged vertically on the DBB, as shown in Figure 3-10. DBB CUST ALM USER D T E V.35 CONNECTOR M P T 7 S P I N S P O U T DS EW D5 6 D L 1 D L 2 Figure 3-10. DBB Connectors These connectors are used as follows: • 3-24 CUST ALM - Allows you to connect to an external alarm source. This connector replaces the 10-pin jack labeled EX AL on the standard transition board.
Installing the DAP • DTE - Allows you to connect to the DTE. See "Connecting to the DTE" section for instructions. • MPT7 - Not used. • SPIN - Not used. • SPOUT - Not used. • DED/SW56- Allows you to connect to the dedicated telephone lines. See "Connecting to the Dedicated Line" section for instructions. • DL1 - Not used. • DL2 - Not used. The NMI and DMM connectors on the standard transition board are not included on the DBB.
Excalibur Multirate DAP Installation and Operation POWER NMI EXT ALM DED SW56 DL DTE TO AC OUTLET SNAP-ON FERRITE Figure 3-11. Power Supply Connection Calibration If your unit is equipped with a Model A or C Aggregate card, you must calibrate the transmitter whenever the power supply is changed. To perform this procedure, disconnect the cable from the dedicated line connector, labeled DED. From the front panel, enter the DAP submenu under the Configuration menu.
Chapter 4 Using the Front Panel Overview This chapter is designed to familiarize you with the Excalibur Multirate DAP front panel. It describes the functions of all buttons and LED indicators, shows you what you will see when you first plug in the DAP, and explains how to move through the menus to enter commands. It also contains instructions on entering unit addresses, establishing password protection, and testing the front panel buttons and indicators.
Excalibur Multirate DAP Installation and Operation What You Will See First When you plug in the Excalibur Multirate DAP, it performs a power-up self-test. When this test is completed, the LCD screen displays the following message: Pwr-Up Initialization Completed, Press ESC. When you press the Escape button, the screen displays the Top Level menu. (See Figure 4-2.) A T (for top) appears in the upper left corner of the screen. Excalibur DAP Local Remot Addrs Serve > Figure 4-2.
Using the Front Panel The Remote option does not appear on the screen when any of the following parameters are set: 1. The Service parameter is set to CC64. 2. The Controller parameter is set to No in the RCP Configuration submenu. 3. The Secondary Channel Format parameter is set to anything other than Excal. 4. The Service parameter is set to DDS and the Local Diagnostics parameter is set to Disable. 5.
Excalibur Multirate DAP Installation and Operation Each time you select an option, a new submenu appears, until the lowest level menu is reached, and the command is executed. To return from any menu to the previous menu, press the Escape button. Status Display Whenever two minutes elapse without a button being pressed, the LCD screen dims (to reduce power consumption). Whenever an additional 58 minutes elapse without a button being pressed, the Status Display appears. (See Figure 4-3.
Using the Front Panel Note: LADC only appears on the screen for units equipped with the Model A or C Aggregate card. Entering Unit Addresses For the Remote Control Panel (RCP) feature to operate properly, you must assign a unique address to each Excalibur Multirate DAP in the circuit. The address can be any 3digit number between 001 and 255. There are two different addresses that must be entered into each unit: • Local - the address of the local DAP.
Excalibur Multirate DAP Installation and Operation 3. Press the button beneath Unit. L Local D rop A ddress Unit ESC Chanl TO P 4. To increase the digit, press the 1 button; to decrease it, press the 2 button. When you change a digit, a reverse video C appears in the lower right corner of the screen. L Local U nit Inc 1 5. D ec 2 N um ber=00 E scape Top < > Accpt 3 4 When the rightmost digit is set, press the < button to move the cursor to the center digit.
Using the Front Panel Assigning NCP Channel The central site Excalibur Multirate DAD contains an additional address you must set called the NCP (network control protocol) channel. This address assigns the DAD to one of seven network management channels on the Cage I/O Card's NMI connector. The NMI connector is a 20-pin interface that connects to up to eight network management channels on a CMS 400 EDM. Channels 2 to 8 are 75 bps channels that allow the CMS 400 to control the DADs in the system.
Excalibur Multirate DAP Installation and Operation Establishing Password Protection The Excalibur Multirate DAP allows you to establish password protection over any or all of the following front panel functions: configuration (including secondary channel configuration), diagnostic testing, remote control panel, dial backup, Digital Data Service Mode, and the T7 address. To establish password protection, you must enter the correct password and then lock the desired front panel functions.
Using the Front Panel 3. Press the button beneath Secur. L Local M ode Secur 2 3 4 4. Press the 1 and 2 buttons to enter the desired character in each space. Press the < and > buttons to move from space to space. Note: The predefined password must be entered in uppercase letters. L S e c u r i t y P a s s wo r d = *** Inc Dec Accpt 1 2 3 Escape Top < > Ot h e r 4 5. When the correct password is displayed, press the 3 button.
Excalibur Multirate DAP Installation and Operation Locking Front Panel Functions The Lock feature allows you to prevent unauthorized personnel inter-vention. When a function is locked, it can not be accessed from the front panel. To lock front panel functions, enter the Security Mode menu and follow these steps: 1. Press the button beneath Lock. L S e c u r i t y Mo d e C h gP w Lock 1 D BS e c 2 3 Escape Top < > SecID 4 2.
Using the Front Panel Unlocking Front Panel Functions To unlock a function so that it reappears in the menu, you must enter the Security Mode menu as previously described. Then follow these steps: 1. Press the button beneath Unloc. L S e c u r i t y Mo d e C h gP w 1 Lock 2 Unloc 3 Escape Top < > D BS e c > 4 2. Press the button beneath the function you wish to unlock. The screen then indicates that the function is unlocked.
Excalibur Multirate DAP Installation and Operation 2. Press the 1 and 2 buttons to enter the desired character in each space. Press the < and > buttons to move from space to space. L Security _ID=0000 Inc Dec 1 Escape Top < > Accpt 2 3 4 3. When the desired security identification code is entered, press the 3 button. The screen then displays the Security Mode menu.
Using the Front Panel 2. Press the 1 button. The top line of the screen displays the new setting. L D ial Security=Disabled Enabl D isab 1 2 L 3 4 E scape Top < > D ia l S ecurity= E na ble d Enabl Disab Front Panel Test The Excalibur Multirate DAP allows you to verify that all front panel buttons and indicators are working properly. To do so, follow these steps, starting from the Top Level menu: 1. Press the > button.
Excalibur Multirate DAP Installation and Operation 3. Press any front panel button that you wish to verify. The screen displays the name of the button pressed on the bottom line. If you press buttons 1 - 4, the Test indicator lights. If you press any other button, the User indicator lights. L P res s <--and--> to end 1 2 3 P re s s L < --a n d --> 4 to E scape Top < > e n d E SC Key 4. To return to the Top Level menu, press the < and > buttons simultaneously.
Using the Front Panel 2. Press the button beneath ALNet. T Excalibur DAP 3. Press the button beneath Ok. The DAP clears its internal list of remote drops and then adds them all again. The display returns to the Top Level menu. Note: This function is interruptive to customer data.
Excalibur Multirate DAP Installation and Operation If an event occurs while you are in the Configuration menu, the screen displays the toggling E in the upper left corner, but does not display the event message. To display the message, press the Escape button until you exit the Configuration menu, and then proceed as previously described. E Local Alarm: D D S R C V L o o p Fa u l t Figure 4-4.
Chapter 5 Defining Operating Parameters Overview This chapter explains how to configure the DAP's operating parameters to suit your particular network requirements. The beginning of the chapter contains step-by-step instructions that show you how to define operating parameters using the front panel buttons and display. The remainder of the chapter describes the parameters in detail.
Excalibur Multirate DAP Installation and Operation For all services except DDSNI and C64NI, the line rate will equal the DTE rate. The maximum main channel (DTE) data rates for DDSNI and C64NI services are listed in Table 5-1. For DDSNI and C64NI you can also set the DTE interface to operate at a lower data rate than the DDS line rate when Rate Adaption is enabled. See "Port Rate Configuration" in this chapter for a complete description of this feature.
Defining Operating Parameters 5. Press the button beneath Rate. DDSNI Configuration Rate Escape Top MPFrm 6. The screen now displays the current line rate and possible options. Press the button beneath the desired setting. The top line of the screen displays the service and the bottom line of the screen displays the new line rate and maximum DTE rate. Escape Data Rate = 9600 56000 19200 9600 Top 4800 > Service = DDSNI Rate=56.0 Usable=52.
Excalibur Multirate DAP Installation and Operation 8. Press the button beneath the desired option. The top line of screen displays the new setting. L M ultiport Fra m e= D isabled Enabl 1 Top < > Disab 2 L E scape 3 M u lt ip o rt E nabl 4 F r a m e = E n a b le d Disab Table 5-1. DDSNI and C64NI DTE Rates DDS Line 5-4 Maximum DTE Rate 2.4 Kbps 2.1 Kbps 4.8 Kbps 4.5 Kbps 9.6 Kbps 9.0 Kbps 19.2 Kbps 18.0 Kbps 56.0 Kbps 52.8 Kbps 64.0 Kbps 57.
Defining Operating Parameters Entering the Configuration Menu To define the rest of the DAP's operating parameters, you must enter the Configuration menu. To do so, follow these steps, starting from the Top Level menu: 1. To configure the local DAP, press the 1 button. To configure the remote DAP, press the 2 button. Excalibur DAP Local Remot Addrs Serve > 1 2 3 4 Escape Top < > Escape Top < > 2. Press the 2 button to enter the Configuration menu.
Excalibur Multirate DAP Installation and Operation The submenus are defined as follows: 5-6 • DAP - allows you to set basic DAP parameters and configure the DAP to the DTE's operating characteristics. • Alias - allows you to assign an alphanumeric name to the DAP. • RCP - allows you to set parameters related to the Remote Control Panel and Test Compatibility features.
Defining Operating Parameters Defining Individual Parameters To define parameters individually, follow these steps: 1. Press the button beneath the desired parameter submenu. L Co n f i gu r a t i o n Mode DAP Alias RCP PRate > 1 2 3 4 Escape Top < > 2. To display a parameter's current setting and possible options, press the button beneath it. (In submenus that contain more than four parameters, you may need to press the > button to scroll to the desired parameter.
Excalibur Multirate DAP Installation and Operation Several parameter screens display the words Inc, Dec, and Accpt on the bottom line. For example: L In c TxLvl Uppr Thrsh=+15db Dec Accpt This means that to change this parameter, you must increase or decrease its current value (rather than select from a list of possible options). When this type of screen is displayed, a cursor appears beneath the rightmost digit.
Defining Operating Parameters Table 5-2.
Excalibur Multirate DAP Installation and Operation Table 5-2. DAP Parameters (Continued) Parameter Possible Settings Latching Loopback8 (Latch) Enabled, Disabled Transmit Calibrate9 (TxCal) Accept Pattern (Pttrn) 2047, 511 Secondary Channel10 (SecCh) Clear Secondary Channel, Remote Control Panel Network Delay11 (NetDl) Short, Medium, Long, Extra Long Automatic Poll11 (APoll) Enabled, Disabled Modify Drop Table11 (ModDT) Add, Delete One's Density12 (1Dens) Enabled, Disabled 1.
Defining Operating Parameters 8. This parameter appears on the screen only when the service is set for DDS-SC or CC64. 9. This parameter appears on the screen only for units equipped with the Model A or C Aggregate card. 10. This parameter does not appear on the screen when the service is set for DDS or CC64. 11. This parameter appears on the screen only when the service is set for DDSNI, the Location parameter is set to central, and the Network parameter is set to multipoint. 12.
Excalibur Multirate DAP Installation and Operation Transmit Clock This parameter specifies the source of timing signals for the DAP's transmit clock. This clock determines the rate at which data is transmitted across the telephone lines. The options available for channel timing depend on the mode of operation. • Slave - When operating over the DDS, DDS-SC, or CC64 network, the timing is fixed.
Defining Operating Parameters CTS Delay This parameter allows you to set additional RTS/CTS delay required in certain network applications. The delay times available are 0, 10, 20, and 40 ms. This is an additional delay added to the basic RTS/CTS delay. The basic delay is dependent on the DTE data rate and the method of transmitting the RTS signal to the far end (in-band or out-ofband). The minimum and maximum delay for a DAP using the out-of-band method is 0.75 to 15.0 ms.
Excalibur Multirate DAP Installation and Operation EIA Pin 21 This parameter specifies whether pin 21 of the DTE interface functions as a Remote Digital Loop input or a Signal Quality indicator. The Remote Digital Loop setting allows a DTE to initiate a remote digital loop by placing a High signal on pin 21. When set to Signal Quality, the DAP places a High signal on this pin when the quality of the received signal is acceptable (Good or Best on the front panel).
Defining Operating Parameters DTR Control This parameter specifies whether the DTR signal is controlled by the DTE or held in a constant On condition. DTR is the "master enable" for all DTE control signals (RTS, CTS, etc.). When Constant is selected, the DAP ignores the DTR signal from the DTE and holds it constant. When DTE is selected, the DTR signal is controlled by the DTE. CTS Control This parameter allows you to set the unit's CTS signal.
Excalibur Multirate DAP Installation and Operation • V.13 - is only supported when the port is configured for synchronous operation. If RTS Simulation is enabled at the far-end port and DCD Simulation is enabled at the local port, when the far-end port raises RTS, the port transmits a 24-bit Up code to the local port. There is an RTS-CTS delay to allow the far-end port enough time to transmit the Up code before accepting data from the DTE.
Defining Operating Parameters Table 5-3. RTS-CTS Delay Related to V.13 RTS-DCD Simulation Port Speed Line Rate 64 Kbps 75 bps 320 ms 150 bps 160 ms 300 bps 80 ms 600 bps 40 ms 1200 bps 20 ms 2400 bps 10 ms 4800 bps 5 ms 7200 bps 3.3 ms 9600 bps 2.5 ms 12.0 Kbps 2 ms 14.4 Kbps 1.7 ms 16.8 Kbps 1.4 ms 19.2 Kbps 1.3 ms 38.4 Kbps 625 µs 57.6 Kbps 417 µs Notes: This table is only intended as an example. It does not provide the RTS-CTS delay for all available port speeds.
Excalibur Multirate DAP Installation and Operation Table 5-4. Worst Case RTS-CTS Delay Related to Out of Band RTS-DCD Simulation DDS Channel Rate Worst Case RTS-CTS Delay 64 Kbps 10 ms 56 Kbps 17 ms 19.2 Kbps 10 ms 9.6 Kbps 10 ms Notes: The RTS-CTS delay added by RTS-DCD Simulation is in addition to the RTSCTS delay selected by the Port CTS Delay parameter described on page 5-13. Out of band RTS-DCD Simulation can be used when the port is configured for synchronous or asynchronous operation.
Defining Operating Parameters Range This parameter does not appear on the screen for units equipped with the 15P09AA or Model D Aggregate card. Extended range operation is automatic and allows operation in loops from 0 to -51dB. For units equipped with older Aggregate cards (Model A or C), the Range parameter specifies whether the DAP can operate in the extended range.
Excalibur Multirate DAP Installation and Operation You can use this channel only with asynchronous data protocols. The character format is one start bit, eight data bits, and two stop bits. The available DTE rates depend on the service and the DDS line rate as listed in Table 5-5. Table 5-5. Clear Secondary Channel Rates DDS Line DDS-SC, LADC1, LDM DDSNI, C64NI 2.4 Kbps 75 bps 75 bps 4.8 Kbps 75, 150 bps 75 bps 9.6 Kbps 75, 150, 300 bps 75, 150 bps 19.
Defining Operating Parameters • ELong - 1.076 seconds for line rates of 2.4 and 4.8 Kbps, 888 milliseconds for a line rate of 9.6 Kbps (multiport framing disabled), and 640 milliseconds for line rates of 9.6 (multiport framing enabled), 19.2, and 56 Kbps. Notes: When this parameter is set to ELong, it is recommended that you set the Automatic Poll parameter to disabled. This parameter is used by the DAP only for internal processing of the alignment table. It is not used for customer data.
Excalibur Multirate DAP Installation and Operation Modify Drop Table The Modify Drop Table feature allows you to add or remove a remote drop from the existing poll table of a central unit. This parameter is available only when the service is set for DDSNI, the Location parameter is set to central, and the Network parameter is set to multipoint.
Defining Operating Parameters 1. Press the 4 button to enter the Configure Channels submenu. L C onfiguration M ode R C P D ia l 1 2 T h rsh Escape Top < > E scape Top < > C h n n l > 3 4 2. Press the 1 button. L C onfigu re C han nels S peed A ssg n 1 2 N am e 3 4 3. Press the 1 button. The screen then displays a list of channel numbers on the bottom line. The All option allows you to simultaneously set all channel data rates to the same rate.
Excalibur Multirate DAP Installation and Operation 4. Press the button beneath the channel you wish to set. (To set Channels 4 - 6, you must first press the > button.) The screen now displays the channel's current DTE data rate and possible options. D efine C hannel S peeds L All C1 C 2 C3 1 2 3 4 C 1 L 52800 51600 = E scape Top < > > 2 4 0 0 50400 49200 > For DAPs with Part No. 15-09Bxx2x0xxx, the possible DTE data rate options are. • Synchronous DTEs - 1.2 to 52.
Defining Operating Parameters 5. Press the button beneath the desired setting. The top line of the screen displays the revised setting. Press the Escape button to return to the channel number list display. C 1 = 2400 L 52800 1 51600 50400 3 2 C 1 L 52800 E sca pe Top < > 49200 > 4 = 51600 4 9 2 0 0 50400 49200 > 6. Repeat Steps 4 and 5 until all the channel speeds are set. Then press the Escape button to return to the Channel Speed submenu.
Excalibur Multirate DAP Installation and Operation Press the Escape button twice to return to the Configure Channels submenu. Channel Assignment To assign the Excalibur Multirate DAP's port to one channel in the aggregate data stream, follow these steps, starting from the Configure Channels submenu. 1. Press the 2 button. L Configure Channels Speed Assgn 1 2 Escape Top < > Escape Top < > Name 3 4 2. Press the 1 button. L Port Assignments Defin Dsply 1 2 3 4 3.
Defining Operating Parameters 4. Press the Escape button to return to the Port Assignments submenu. You must press the button beneath Accept to enter the port's channel assignment into memory. If you do not press the button beneath Accept before pressing the Escape button, a prompt will appear on the screen asking if you want to accept the changes. The screen then returns to the Configure Channels submenu. L Port Assignments Defin Dsply 1 2 Escape Top < > Accpt 3 4 5.
Excalibur Multirate DAP Installation and Operation 2. Press the button beneath the channel you want to name. The screen displays the current name on the top line, with a cursor located beneath the leftmost space. L C1 1 Define Channel Names C2 2 C3 C4 3 4 Escape Top < > > 3. Press the 1 or 2 button to scroll through the different letters, numbers, and symbols that can be entered in the space. L Inc 1 Channel 1=C1 Dec 2 Accpt Other 3 4 Escape Top < > 4.
Defining Operating Parameters 5. Press the 4 button. You can now insert a character by pressing the 1 button, delete a character by pressing the 2 button, or delete a character and move the cursor one space to the left by pressing the 3 button. When finished, press the 4 button twice. L C h a n n e l 1 = A1 Inc Dec Accpt Other 1 2 3 4 L Escape Top < > Channel 1=A1 IN S DEL BC KS P Ot h e r 6. Press the 4 button twice.
Excalibur Multirate DAP Installation and Operation Port Rate Configuration This submenu allows you to set the DTE interface to operate at a lower data rate than the DDS line rate. This feature, called Rate Adaption, is available for the C64NI mode and the DDSNI mode when the Multiport Framing parameter is disabled. The available DTE data rates are dependent on the DDS line rate as listed in Tables 5-7 and 5-8 for DAPs with Part No. 15-09Bxx2x0xxx.
Defining Operating Parameters Table 5-8. Asynchronous Rate Adaption DDS Line DTE Data Rates 2.4 Kbps 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 4.8 Kbps 2.4, 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 9.6 Kbps 7.2, 4.8, 2.4, 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 19.2 Kbps 16.8, 14.4, 12.0, 9.6, 7.2, 4.8, 2.4, 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 56 Kbps 48.0, 28.8, 24.0, 19.2, 16.8, 14.4, 12.0, 9.6, 7.2, 4.8, 2.4, 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 64 Kbps 57.6, 48.0, 28.8, 24.0, 19.2, 16.8, 14.4, 12.0, 9.6, 7.2, 4.8, 2.4, 1.
Excalibur Multirate DAP Installation and Operation Table 5-10. Asynchronous Rate Adaption (Older DAPs) DDS Line Data Rates 2.4 Kbps 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 4.8 Kbps 2.4, 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 9.6 Kbps 7.2, 4.8, 2.4, 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 19.2 Kbps 16.8, 14.4, 12.0, 9.6, 7.2, 4.8, 2.4, 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 56 Kbps 19.2, 16.8, 14.4, 12.0, 9.6, 7.2, 4.8, 2.4, 1.2, 0.6, 0.3, 0.15, 0.075 Kbps 64 Kbps 19.2, 16.8, 14.4, 12.0, 9.6, 7.2, 4.8, 2.4, 1.2, 0.6, 0.
Defining Operating Parameters Table 5-11.
Excalibur Multirate DAP Installation and Operation Controller This parameter specifies whether your DAP is configured for external control (CMS) or RCP control. If you want external control, select No. If you want RCP control, select Yes. If Yes is selected, diagnostic control may be initiated from CMS or the front panel but not simultaneously. RTS Mode The RTS Mode parameter specifies whether the unit monitors for constant RTS or an RTS change of state at the DTE interface.
Defining Operating Parameters Table 5-12. Secondary Channel Format Excal CMS DSU 1500 CMS DSU 1556 CMS DSU 500, 556 RD, CMS 6424 DDS X — — X DDSNI X — — — DDS-SC X X X — LADC* X — — — LDM X — X — CC64 — — — — C64NI — — — — Service Legend: X = Valid Secondary Channel Format. * = Only available for units equipped with the Model A or C Aggregate card. Local Diagnostics This parameter appears on the screen only when the service is set for DDS.
Excalibur Multirate DAP Installation and Operation Local Alarm Display This parameter specifies whether the front panel displays alarms that occur at the local DAP. (Incoming alarms are always displayed when the unit is configured for RCP control.) When disabled, local alarms are not displayed on the front panel, but may be reported to the CMS network management system.
Defining Operating Parameters In the example shown in Figure 5-1, from the CMS system console, a request is made for a dial backup connection with a central DAP. The central DAP is then configured to run at V32bis+ (for units equipped with the Analog IDBU feature) and to route T7 to the dial-up telephone line. When making the call from the CMS system console, the operator specifically requests that main channel data NOT be switched to the dial-up telephone line.
Excalibur Multirate DAP Installation and Operation To activate this feature from the DAP's front panel, follow these steps: 1. Enter front panel commands to originate a dial backup connection with the answering DAP. See Chapter 6, "Entering Telephone Numbers" and "Originating Dial Backup Calls" for instructions. 2. When the dial backup connection has been established, switch back to the dedicated lines by pressing the button beneath Line in the Call submenu. Then press the button beneath Ded.
Defining Operating Parameters Table 5-13.
Excalibur Multirate DAP Installation and Operation Speed This parameter specifies the speed the DAP automatically switches to when it originates a dial backup connection. The answering unit adapts to the originating unit's speed if the answering unit is set for a higher speed than the originating unit. If the answering unit is set for a lower speed, the connection will be made at the answering unit's speed except when it is set for 2.1, 2.4, 4.5, or 9.0 Kbps.
Defining Operating Parameters Wait to Dial This parameter specifies how long the DAP waits to dial a call after it goes off-hook. If a dial tone is provided at your calling facility, select Tone. This instructs the DAP to initiate dialing when it detects a dial tone. If a dial tone is unavailable, you can select a 2-, 10-, or 20-second dialing delay. Call Progress This parameter specifies whether the DAP observes call progress tones when establishing a dial backup connection.
Excalibur Multirate DAP Installation and Operation Switch to Dial This parameter specifies whether the DTR signal must be present for the DAP to switch communication to the dial backup telephone line. Automatic Disconnect This parameter specifies the conditions that cause the DAP to automatically disconnect a dial backup connection. You can select from the following options: • No DTR - the DAP disconnects the call after the dial backup port's DTR signal goes Off.
Defining Operating Parameters DCD Threshold This parameter specifies the level range that incoming dial line signals must fall within to activate the DAP's DCD signal. The normal range is 0 to -38 dBm and the extended range is 0 to -48 dBm. Answer This parameter specifies the conditions that cause the DAP to automatically answer dial line calls. You can select from the following options: • Always - the DAP always answers calls. • Never - automatic answering is disabled.
Excalibur Multirate DAP Installation and Operation Answerback This parameter enables/disables the Answerback feature. When enabled, this parameter allows the DAP to recover when the quality of the dial line signal degrades past an acceptable level. When the DAP detects unacceptable signal quality, it briefly drops its Clear-to-Send signal and clamps all received data to a Marking (l's) state. It then sends a training sequence to the far-end unit.
Defining Operating Parameters • 57.6 and 56 Kbps are automatically changed to 52.8 Kbps (C64NI operating mode). When the DAP is in dial backup operation and the DTE data rate is 56 Kbps, no secondary channel is provided. Therefore, if the unit is a remote and a CMS link exists during normal operation (all operating modes except CC64), the link is lost when the unit is in dial backup operation. When the DAP is in dial backup operation and the DTE data rate is 52.
Excalibur Multirate DAP Installation and Operation Call Progress This parameter specifies whether the DAP observes call progress tones when establishing a dial backup connection. By observing these signals (busy signal, ringing, etc.) while a call is in progress, the DAP can reduce the time needed to verify a failed connection. This parameter is only operational when the DAP is connected to Sprint's Enhanced Switched 56 Service.
Defining Operating Parameters Automatic Disconnect This parameter specifies the conditions that cause the DAP to automatically disconnect a dial backup connection. You can select from the following options: • No DTR - the DAP disconnects the call after the DTR signal from the dial backup port's DTE goes Off. • None - the DAP disconnects the call when multiport framing is lost for longer than 90 seconds. Note: A network disconnect signal overrides the Automatic Disconnect parameter setting.
Excalibur Multirate DAP Installation and Operation Line Test Interval This parameter specifies the duration of the dedicated line test. The possible settings are 5, 10, 15, and 30 minutes. Answer This parameter specifies the conditions that cause the DAP to automatically answer dial line calls. You can select from the following options: • Always - the DAP always answers calls. • Never - automatic answering is disabled.
Defining Operating Parameters Port RTS-DCD Simulation This parameter specifies the RTS-DCD simulation method for each port or shared group when dial backup connections are established. The options are V.13, Out of Band, and Disabled. Note: When operating with another DAP equipped with ISDN IDBU, do not set this parameter to out of band. ISDN IDBU does not provide out of band RTS-DCD simulation. Ring Detect This parameter specifies the method the DAP uses to answer calls.
Excalibur Multirate DAP Installation and Operation ISDN Dial Parameters The Dial submenu contains the parameters which control the operation of the ISDN IDBU feature. Table 5-15 lists these parameters along with their possible settings. Parameters are listed in the order they appear on the screen. The screen abbreviation for each parameter is shown in parenthesis. Table 5-15.
Defining Operating Parameters Switch Type This parameter allows you to define the switch type and software protocol. This parameter setting must correspond with your dial line connection. The available options are: • NI-1 - National ISDN-1 standard. • NT100 - Northern Telecom DMS-100 at a functional Pvc0 protocol. • AT&T - AT&T 5ESS with Custom, 5E6, or later software. Dial Mode This parameter allows you to select the dial mode.
Excalibur Multirate DAP Installation and Operation Automatic Dial This parameter specifies the conditions that cause the DAP to automatically place dial backup telephone calls. You can select from the following options: • DDS Down - DDS goes down due to Out of Service codes, Abnormal Station codes, loss of multiport framing, or loss of network framing for a user-selectable time period. • No Signal - an invalid DDS signal is received from the network.
Defining Operating Parameters Note: A network disconnect signal overrides the Automatic Disconnect parameter setting. Retry Attempts This parameter specifies the maximum number of times that the DAP will redial a call if the previous attempt is unsuccessful. The Excalibur Multirate DAP allows you to store six telephone numbers: one permanent, four alternate, and one temporary.
Excalibur Multirate DAP Installation and Operation • DDS Line or Local Loop Down - the DAP only answers calls when the DDS line goes down (due to Out of Service codes, Abnormal Station codes, loss of multiport framing, or loss of network framing) or when an invalid DDS signal is received from the network. • No Signal - the DAP only answers calls when an invalid DDS signal is received from the network. The DAP constantly monitors the network interface for an off-hook (ringing) state.
Defining Operating Parameters Table 5-16. Parameter Thresholds (Continued) Parameter Default Settings Signal Quality Good, 3 sec Resync Limit 2 times, 5 min Lost Communication Alarm Timer 60 sec Regained Communication Alarm Timer 600 sec RTS Antistreaming Timer Disabled, 50 sec DCD Antistreaming Timer Enabled, 50 sec DTE Power Fail Timer Disabled, 10 sec You can specify the amount of time the value of each line parameter can exceed its defined threshold before the DAP issues an alarm.
Excalibur Multirate DAP Installation and Operation The RTS Antistreaming Timer parameter allows you to specify the amount of time, from 1 to 255 seconds, RTS can be active before CTS is turned Off. If one DTE remains in an RTS active state, this function allows other DTEs running the same application on other units to continue to operate. When the RTS Antistreaming function is enabled, an antistreaming alarm is generated when the timer expires.
Defining Operating Parameters 2. To change the current setting of a condition, press the button beneath it. The revised setting is then displayed. L User LED, +=ON, - =OFF +Alrm -AStr -Call -Dial 1 2 3 4 L Escape Top < > U s e r L E D , + = ON , - = O F F +A l r m -A S t r -C a l l +D i a l Turning off the User LED When the User LED is lit, the User submenu contains an additional parameter labeled Clear. To turn off the User LED, press the button beneath this parameter.
Excalibur Multirate DAP Installation and Operation 2. Press the 1 or 2 button to scroll through the different letters, numbers, and symbols that can be entered in the space. L E xc a l i b u r D A P Inc Dec Accpt Other 1 2 3 4 Escape Top < > 3. When the desired character is displayed, press the > button to move the cursor to the next space.
Defining Operating Parameters 5. Press the 4 button twice. You can now copy a character into the next space by pressing the 1 button, enter an M in a space by pressing the 2 button, or enter a blank space by pressing the 3 button. When finished, press the 4 button. L Nxcalibur DAP Inc Dec Accpt Other 1 2 3 4 Escape Top < > L Nxcalibur DAP C p y -> M Bl a n k Other 6. Continue in this manner until you have entered the desired Alias. Then press the 3 button to enter it into memory.
Excalibur Multirate DAP Installation and Operation 2. Press the button beneath Store. L System Configuration Store Swap Fctry 1 2 3 Escape Top < > Escape Top < > Reset 4 3. Press the 1 button to store the current parameter settings. L Store System Config To Cfg-2 1 2 3 4 Once you have stored a configuration, you can then swap it with the current parameter configuration. To do so, enter the System submenu and press the button beneath Swap. Then press the 1 button.
Chapter 6 On-Line Operation Introduction After you have properly installed the DAP and defined its operating parameters, it can begin transmitting data. This chapter describes the different procedures that you can perform while the DAP is operating on-line. These include monitoring current operating status, establishing dial backup connections, and sending call messages. This chapter also lists the different types of alarms that the DAP can report during on-line operation.
Excalibur Multirate DAP Installation and Operation 3. Press the button beneath DAP. The screen displays the current operating status. L Escape Status Mode DAP Dial L 9.6 Q=Best Serve T L 0dBm Dial=N Top Digtl > RL -11dB Tst=N The display shows the status of the following: • 9.6 - indicates the DAP's operating speed (9.6 Kbps). Possible displays range from 2.4 to 64 Kbps. Actual speeds displayed are dependent on the service used.
On-Line Operation Notes: LADC only appears on the screen for units equipped with the Model A or C Aggregate card. The Excalibur Multirate DAP provides the transmit and receive levels for use as a reference, not as an absolute value. Accuracy is dependent on the data pattern and line conditions. Press the Escape button to return to the Status submenu. Table 6-1. Receive Level Insertion Loss Ranges DDS Line Rate Insertion Loss Range Values 2.4 Kbps <7, <13, <18, <22, <27, <33, <38, <50 4.
Excalibur Multirate DAP Installation and Operation The display shows the status of the following: • 9.6C - indicates the DAP's operating speed (9.6 Kbps, coded). Other possible values are 9.6U (9.6 Kbps, uncoded), 2.1 (2.1 Kbps), 2.4 (2.4 Kbps), 4.5 (4.5 Kbps), 4.8 (4.8 Kbps), 9.0C (9.0 Kbps, coded), 9.0U (9.0 Kbps, uncoded), 12.0 (12.0 Kbps), and 14.4 (14.4 Kbps). When the DAP is not in dial backup operation, Idle is displayed. • TL - shows the DAP's transmit level in -dBm.
On-Line Operation • Q - shows the quality of the signal received from the dial backup line when the DAP is in dial backup operation. Possible displays are Best, Good, Fair, and Poor. When the DAP is not in dial backup operation, **** is displayed. • Dial - indicates whether the DAP is in dial backup operation. • Tst - indicates whether a test is in progress. Press the Escape button to return to the Status submenu. For ISDN IDBU, the display appears as follows: Status M ode L D AP Dial 1 2 L 6 4.
Excalibur Multirate DAP Installation and Operation 5. Press the button beneath Serve. The top line of the screen displays the service used (DDSNI). The bottom line of the screen displays the DDS channel rate (19.2 Kbps) and the usable aggregate channel bandwidth (18.0 Kbps). L Status Mode DAP 1 Dial Serve 2 Escape Top < > Digtl > 3 4 Service = DDSNI L Rate=19.2 Usable=18.0 Press the Escape button to return to the Status submenu. 6. Press the button beneath Digtl.
On-Line Operation 7. Press the > button. L Status Mode DAP Dial Serve Digtl > 1 2 3 4 Escape Top < > Escape Top < > 8. Press the button beneath Unit. L Status Mode 4 9. Press the button beneath the unit information you wish to display: Serl# (unit serial number), Part#, or Revsn (software revision level). The screen then displays this information.
Excalibur Multirate DAP Installation and Operation 10. Press the button beneath Analg. L Status Mode Analg > 3 4 The screen's top line displays the status of the most recently selected analog channel parameter, which in this case is the transmit level. The bottom line displays the parameters that you can monitor: TxLvl (transmit level), RxLvl (receive level), and SQlty (signal quality).
On-Line Operation 13. Press the button beneath SQlty. The screen displays this parameter's status followed by its predefined threshold. Analog C hannel S tatus L TxLvl 1 RxLvl SQ lty 2 3 S Q = B e s t L TxLvl RxLvl 4 E sca pe Top < > Escape Top < > T h r = F a i r SQ lty Press the Escape button to return to the Status submenu. 14. Press the > button. L Status Mode 4 Press the button beneath Tests.
Excalibur Multirate DAP Installation and Operation 16. Press the > button. L Status Mode Drops > 4 Press the button beneath Chnnl. This parameter allows you to view channel speeds and port assignments for multidrop operation. This parameter appears on the screen only when the service is set for DDSNI and the Multiport Framing parameter is enabled. L Status Mode
On-Line Operation Press the Escape button to return to the Channel Status submenu. 20. Press the button beneath Assgn. The screen then displays the port's multidrop channel assignment. If a name has been assigned to the channel, the name will appear in place of the channel number.
Excalibur Multirate DAP Installation and Operation • Number of seconds receive line fault conditions and active network service loops occur. From the DAP's front panel, you can monitor displays of the following line availability statistics: • Percentage of time transmit levels, receive levels, and signal quality are within predefined thresholds. • Percentage of time the DDS circuit is available for use. • Percentage of time the DAP is receiving a valid signal from the network.
On-Line Operation 3. Press the > button. L Status M ode D AP Dial 1 2 S erve 3 E scape Top < > Escape Top < > Digtl > 4 4. Press the button beneath Line. L Status Mode 4 5. Press the button beneath Level. The screen then displays the percentage of time the Receive Level, Transmit Level, and Signal Quality have all been within their predefined thresholds. The information on this screen is continuously updated.
Excalibur Multirate DAP Installation and Operation Press the Escape button to return to the Line Statistics submenu. 6. Press the button beneath SQ. The screen then displays the percentage of time the Signal Quality has been within its predefined threshold. The screen continuously updates this information. Line Statistics L Level 1 S Q DD S 2 S Q 0D, U p 4 9 5.0 % 8H, Top < > Signl > 3 L E sca pe 3M , for: 54S 7. Press the button beneath DDS.
On-Line Operation 8. Press the button beneath Signl. The screen then displays the percentage of time that a valid signal has been received from the network. The screen continuously updates this information. Line Statistics L Level 1 S Q DD S 2 L 4 S ig U p 9 5.0% fo r: 8H, Top < > Signl > 3 0D, E sca pe 3M , 54S Any of the following conditions causes an invalid signal: • Line is not connected to unit.
Excalibur Multirate DAP Installation and Operation 10. If you wish to cancel the current line statistics and reset them to zero, press the button beneath Reset. The screen then displays this information. This function also resets the unit and global resync counters described in Step 15. Line Statistics L E sca pe Top < > button.
On-Line Operation 13. Press the button beneath Addrs to display the T7 address of all the remote units on the multidrop line that are in synchronization with the central unit. D rop S tatus L A ddrs Resyn 1 3 001 002 Top < > LC om m 2 L E scape 4 0 03 004 005 006 Press the Escape button to return to the Drop Status submenu. 14. Press the button beneath Resyn. L D rop S tatus Addrs R esyn LCom m 1 2 3 15. 4 E sca pe Top < > Press the button beneath Unit.
Excalibur Multirate DAP Installation and Operation 16. Press the button beneath Next to display the T7 address and the number of resynchronizations for the next remote unit on the multidrop line. Addrs=001 L N ex t 1 Resyn=000 E scape Top 4 < > Prev 2 3 Press the Escape button to return to the Resync Count submenu. 17. Press the button beneath Globl. The bottom line of the screen displays the number of times the central unit has resynchronized the entire network.
On-Line Operation Press the Escape button two times to return to the Status submenu. Alarms The Excalibur Multirate DAP reports a variety of alarm conditions to alert you to problems in the network. You can configure the DAP to sound a beeper and/or light the User LED when an alarm is reported. The alarm message is displayed on the LCD screen. The following conditions cause an alarm to be reported: • External Alarm - caused by the occurrence of a customer defined external event that is sensed by the DAP.
Excalibur Multirate DAP Installation and Operation 6-20 • Call - is a message produced by the operator from a DAP to the NMC. Call is not available when the service is set for DDS or Clear Channel 64 Kbps. This alarm provides a means of communication between the operator at the DAP site and the operator at the controller station. This alarm is not stored in the alarm buffer. • Downstream Power Fail - generated by the remote DAP when it detects a unit has lost power.
On-Line Operation • Regained Communication - generated by the central DAP in a multidrop network when communication is regained with a remote unit for longer than the amount of time selected in the Parameter Threshold submenu. This alarm is only available when the service is set for DDSNI and the Automatic Poll parameter is disabled. • Diagnostics Started - generated when the secondary channel has been activated to communicate with a far-end unit.
Excalibur Multirate DAP Installation and Operation ISDN Dial Backup Alarms For units equipped with the ISDN IDBU feature, an alarm message is displayed on the LCD screen when the DAP receives a Cause Information Element from the ISDN network. The cause number is the cause value received in the Cause Information Element. The associated text is a paraphrase (edited to save space) of the CCITT Q.931 definition for that cause value. See Annex G of the Q.
On-Line Operation The following messages are generated when the DAP rejects an incoming call of an incompatible type. For example, calls from conventional telephones, calls from units equipped with Switched 56 IDBU when the dial mode parameter is not set to ESw56, or calls from units equipped with ISDN IDBU when the dial mode parameter is set to ESw56. ISDN Status ISDN Status ISDN Status Speech Call Rejected 3.
Excalibur Multirate DAP Installation and Operation 2. Press the 1 button. L Local Mode Stats 1 Confg 2 Diag Dial > 3 4 Escape Top < > Escape Top < > Escape Top < > 3. Press the > button two times. L Status Mode DAP Dial Serve Digtl > 1 2 3 4 L Status Mode 1 2 3 4 4. Press the button beneath Alarm. The screen then displays the most recently reported alarm on the top line.
On-Line Operation 6. To clear the alarm currently displayed, press the 1 button. To clear all alarms in the buffer, press the 2 button. Note: The DAP can not regenerate an alarm that is currently stored in the alarm buffer until it has been cleared from the buffer.
Excalibur Multirate DAP Installation and Operation The Dial submenu allows you to perform the following functions. • Enter telephone numbers. • Enter the Service Profile Identification (SPID) number for units equipped with the ISDN IDBU feature. • Originate dial backup calls. • Disconnect dial backup calls. • Initiate dial line tests. The following sections describe each of these procedures.
On-Line Operation 2. Press the button beneath the target type for which you wish to enter a telephone number. (To display Alternate 4 and Temporary, you must first press the > button.) L Choose Target Ph# Type Pri Alt1 1 2 L Alt2 3 Escape Top < > Alt3 > 4 Choose Target Ph# Type
Excalibur Multirate DAP Installation and Operation 4. Press the 4 button. You can now insert a character by pressing the 1 button, delete a character by pressing the 2 button, or delete a character and move the cursor one space to the left by pressing the 3 button. When finished, press the 4 button twice. L P rim ary P h#=- > Inc Dec A ccpt 1 2 3 L P rim a ry INS Top < > O ther 4 P h # =- D EL E scape > B CKS P O ther 5. Press the 4 button twice.
On-Line Operation Table 6-2. Analog and ISDN IDBU Telephone Number Characters Character Function 0-9, #, *, A - D Digits for dialing. A - D are invalid for ISDN IDBU. T Tone dialing for Analog IDBU. No function for ISDN IDBU. P Pulse dialing for Analog IDBU. Invalid for ISDN IDBU. E 1-second intercharacter delay for Analog IDBU. Wait to dial for ISDN IDBU. F 2-second intercharacter delay for Analog IDBU. Wait to dial for ISDN IDBU. G 4-second intercharacter delay for Analog IDBU.
Excalibur Multirate DAP Installation and Operation Entering Service Profile Identification Number The telephone company may provide you with one, two, or no Service Profile Identification (SPID) number(s) when you order ISDN Basic Rate service. Each SPID number can be a maximum of 20 digits long. If provided, the SPID number(s) must be entered into memory to comply with telephone company requirements. To enter the SPID number(s), follow these steps, starting from the Dial submenu: 1.
On-Line Operation Originating Dial Backup Calls Dial backup telephone calls can be originated automatically (if the Automatic Dial parameter is enabled) or manually by entering front panel commands. To initiate a dial backup call manually, follow these steps, starting from the Dial submenu: 1. Press the button beneath Call. D ial M ode L Call P hon# 1 2 Test 3 E scape Top < > S PID 4 2. Press the button beneath the stored telephone number you want the DAP to dial.
Excalibur Multirate DAP Installation and Operation Analog Dial Line Tests The Excalibur Multirate DAP provides five diagnostic tests that check the performance of the dial backup line when the Dial Mode parameter is set to BIS+ in the Dial Configuration submenu. Three of the tests (Dial Tone Test, End-to-End Call Test, and Self-Error Test) can be initiated only during digital line operation. They do not interrupt the DAP's data transmission during or after the test.
On-Line Operation To initiate the Dial Tone Test and End-to-End Call Test, follow these steps, starting from the Dial submenu: 1. Press the button beneath Test. L Dial Mode Call Phon# Test 1 2 3 4 Escape Top < > 2. Press the 1 button. The DAP starts the Dial Tone Test. (To end the test while it is in progress, press the Escape button. Then press the button beneath Abort.) L D ial Test DTone EEC al 1 2 3 4 E scape Top < > D TT L Aw aiting D ial Ton e 3.
Excalibur Multirate DAP Installation and Operation 4. Press the button beneath the target type you want to establish a dial line connection with. The DAP starts the End-to-End Call Test. (To end the test while it is in progress, press the Escape button. Then press the button beneath Abort.) L C hoose Target Ph# Type Pri Alt1 1 2 A lt2 E scape Top < > Alt3 > 3 4 C all E -E Ts t L D ialin g T arge t 5.
On-Line Operation 2. Press the button beneath Dial. L Choose Type Ded Dial 1 2 3 4 Escape Top < > 3. When the DAP is in normal operation, SlfEr (Self-Error) appears on the screen. When it is in dial backup operation, EEErr (End-to-End Error) and L2Err (Loop 2 Error) appear on the screen if the Dial Mode parameter is set to BIS+ in the Dial Configuration submenu. If the Dial Mode parameter is set to 32BIS, DLoop (Digital Loop) appears on the screen.
Excalibur Multirate DAP Installation and Operation 5. Use the 1, 2, and < buttons to enter the desired length of the test (1 - 999 seconds). When the desired number is displayed, press the 3 button to start the test. The screen then displays an error counter and the time remaining in the test. If you want to abort a test while it is in progress, press the 1 button. If you wish to insert an error into the test pattern, press the 2 button. (This verifies that the error detector is working properly.
On-Line Operation The Excalibur Multirate DAP provides two diagnostic tests (Dial Tone Test and End-toEnd Call Test) that can be initiated only during dedicated line operation. They do not interrupt the DAP's data transmission during or after the test. Instructions for initiating these tests are given in the previous section, "Analog Dial Line Tests." • Dial Tone Test - takes the dial line off-hook and checks for a wink (dial tone).
Excalibur Multirate DAP Installation and Operation • V.54 Digital Loop Test - differs from the standard Digital Loop Test in that it creates only one loop. It loops its receive data from the line to its transmitter input. • Loop 2 and Loop 2 Error Tests - Loop 2 Test places the far-end unit into a Digital Loop or a V.54 Digital Loop depending on the Remote Digital Loop parameter setting in the DAP Configuration submenu for aggregate level tests only.
On-Line Operation 2. Press the button beneath Dial. The screen displays the Dial Aggregate Diagnostics submenu. (See "Individual Port Testing" and "Channel Testing" in Chapter 7 for information on the Port Diagnostics and Channel Diagnostics submenus, respectively.) When the DAP is in dial backup operation, EEErr (End-to-End Error), DLoop (Digital Loop), V54DL (V.54 Digital Loop), Loop2 (Loop 2) and L2Err (Loop 2 Error) appear on the screen.
Excalibur Multirate DAP Installation and Operation 2. Press the button beneath Timed if you wish to specify the test length. Press the button beneath Cont if you wish to run the test continuously. To terminate a continuous test, press the button beneath Clear. L Test Timed Cont 1 2 Duration 4 3 Escape Top < > 3. Use the 1, 2, and < buttons to enter the desired length of the test (1 - 999 seconds). When the desired number is displayed, press the 3 button to start the test.
On-Line Operation 1. Press the button beneath the loop you wish to run. L D ial A ggr D iagnostics EE Err D Loop V54DL Loop2 > 1 2 3 4 E scape Top < > 2. Press the 1 button to start the loop. The DAP then activates the loop. L Ag:R -D Loop Inactive E scape Top < > E scape Top < > Start 1 2 3 4 3. Press the 1 button when you wish to clear the Loop.
Excalibur Multirate DAP Installation and Operation To send a message, you must enter one of 10 numerical codes (0 - 9) into the DAP. Each code signifies a message previously agreed upon by both DAP operators. For example, 5 can indicate that the system is going down for 5 minutes. After you enter the code, the DAP transmits it through the secondary channel to the address designated as Remote in the Address submenu. (See Chapter 4.) To send a message, follow these steps, starting from the Top Level menu: 1.
On-Line Operation 5. When the desired code is displayed, press the 3 button to send it.
Chapter 7 Troubleshooting Overview Malfunctions in your communications network can range in severity from an unacceptably high error rate (more than one error per 100,000 bits) to a complete system failure (no data transfer). To eliminate costly downtime, you need to act quickly when any such malfunction occurs. The Excalibur Multirate DAP provides a full complement of built-in diagnostic tests that help you to quickly and accurately isolate the source of the problem.
Excalibur Multirate DAP Installation and Operation The Excalibur Multirate DAP's diagnostic tests are designed so that you can isolate and verify the different components in the network. Three levels of tests are provided to facilitate running tests in mixed multiport and singleport environments: • Aggregate Level - uses the total available aggregate bandwidth for testing all ports. When using Rate Adaption in the DDSNI mode, the port clock speed will increase.
Troubleshooting LOCAL DAP TX MARKING GEN RX DTE TEST PATTERN GEN IDLE SEQUENCE TRANSMITTER TEST PATTERN COMP RECEIVER Figure 7-1. Self-Error Test Local-Error Test The Local-Error Test checks the interface circuitry for faults. To perform the test, you must disconnect the cable connected to the 8-pin modular jack labeled DED on the DAP's rear panel and replace it with a looping cable.
Excalibur Multirate DAP Installation and Operation The Local-Error Test can also be used to check the customer's lines. (See Figure 7-3.) When this test is activated, the DAP sends its transmitter output through the customer's lines. The output is looped back via the looping cable. Note: This test is effective provided the receive level loss is -20 dB or less. A receive level loss of -21 dB or greater on the line will cause errors in the test pattern.
Troubleshooting LOCAL DAP REMOTE DAP LINES TEST PATTERN GEN TX RX MARKING GEN TEST PATTERN COMP TRANSMITTER RECEIVER RECEIVER TRANSMITTER TEST PATTERN COMP MARKING GEN TEST PATTERN GEN RX TX Figure 7-4. End-to-End Error Test Network-Error Test You can verify operation of the DDS lines by running a Network-Error Test. The Network-Error Test must be activated jointly through the DAP's front panel and the Telco's Test Set.
Excalibur Multirate DAP Installation and Operation DDS Loop Test The DDS Loop Test isolates the local DTE from the rest of the network. The DAP loops its transmitter output to its receiver input at the DTE interface, and its receive DDS data input to its transmit DDS data. (See Figure 7-6.) Notes: The DDS Loop Test is not a full bandwidth test. The units must be frame locked (aligned) to activate this loop in DDSNI and C64NI modes.
Troubleshooting LOCAL DAP DTE INTERFACE LOOP TRANSMITTER DTE DAP LOOP INTERFACE LINES RECEIVER Figure 7-7. Digital Loop Test V.54 Digital Loop Test The V.54 Digital Loop Test differs from the standard Digital Loop Test in that it creates only one loop. It loops its receiver output to its transmitter input. It electronically disconnects the DAP from the DTE. (See Figure 7-8.
Excalibur Multirate DAP Installation and Operation Loop 2 and Loop 2 Error Tests The Loop 2 Test places the far-end DAP into a V.54 Digital Loop. (See Figure 7-9.) You can run this test on the entire aggregate bandwidth (Aggregate Digital Loop Test), through an individual port (Port Digital Loop Test), or through a channel's lowest numbered port (Channel Digital Loop Test). This test allows you to isolate the far-end DTE from the rest of the network.
Troubleshooting Service Loops Service loops are part of the DDS network's diagnostic capabilities. They are used to isolate trouble conditions in the local serving loop and the customer's data communications equipment. The service loops provided by the Excalibur Multirate DAP are described in the following sections. Refer to AT&T Publication 62310 for more complete information.
Excalibur Multirate DAP Installation and Operation LOCAL DAP TRANSMITTER TX TX LINES MARKING GEN RX RECEIVER RX Figure 7-12. Non-Latching and Latching Loopback Tests Latching Loopback Test The Latching Loopback Test is an optional network loopback test initiated by the reception of a complex sequence of code bytes as defined by AT&T Publication 62310. It is operational in DDS-SC and Clear Channel 64 Kbps modes.
Troubleshooting 2. Press the button beneath Diag. The screen then displays the Diagnostic Mode submenu. L Escape Local Mode Stats Confg Diag 2 Top Dial > 4 3. Press the 1 button. (See "Individual Port Testing" on page 7-14 for information on the Port Diagnostics submenu and see "Channel Testing" on page 7-15 for information on the Channel Diagnostics submenu.) L Escape Diagnostic Mode Aggr Port Top Chnnl 2 4 If the unit is equipped with the Analog or ISDN IDBU feature, follow Step 4.
Excalibur Multirate DAP Installation and Operation 5. The screen displays the Aggregate Diagnostics submenu. (To select the V.54 Digital Loop Test, Loop 2 Test, or Loop 2 Error Test, you must first press the > button. Press the > button again to select the Local-Error Test or Network-Error Test.
Troubleshooting 2. Press the button beneath Timed if you wish to specify the test length. Press the button beneath Cont if you wish to run the test continuously. To terminate a continuous test, press the button beneath Clear. L Test Timed Escape Duration Top Cont 4 2 3. Use the 1, 2, and < buttons to enter the desired length of the test (1 - 999 seconds). When the desired number is displayed, press the 3 button to start the test.
Excalibur Multirate DAP Installation and Operation 1. Press the button beneath the loop you wish to run. (To select a V.54 Digital Loop Test or Loop 2 Test, you must first press the > button.) L Aggregate Diagnostics SlfEr EEErr DDS 2 Escape Top DLoop > 4 2. Press the 1 button to start the loop. The DAP then activates the loop. L Ag:DDS Loop Inactive E scape Top 4 < > E scape Top < > Start 1 2 3 3. Press the 1 button when you wish to clear the Loop.
Troubleshooting 1. Press the 2 button. The screen displays the names of the tests you can run. (To select the Loop 2 Error Test, you must first press the > button.) L Diagnostic Mode Aggr Port Chnnl 1 2 3 Escape Top < > 4 L Port-1 Diagnostics EEErr DLoop V54DL Loop2 > 2. If you are running an End-to-End Error Test, Loop 2 Test, or Loop 2 Error Test, the screen displays the first four remote ports on the bottom line.
Excalibur Multirate DAP Installation and Operation 1. Press the 3 button. L Aggr 1 Diagnostic Mode Po r t 2 Escape Top < > C hn n l 3 4 2. The top line of the screen displays the port's current channel assignment selected under the Channel Assignment parameter in the Channel Configuration submenu. The bottom line of the screen displays the names of the tests you can run. (To select the Loop 2 Error Test, you must first press the > button.
Troubleshooting 2. Press 1 or 2 button depending on which unit (local or remote) you wish to return to normal mode. The DAP then aborts any tests in progress at the selected DAP, clears any alarms, and turns off the User LED if it is lit. If the unit is equipped with an IDBU option, it also resets the Automatic Dial Backup Retries function.
Excalibur Multirate DAP Installation and Operation Table 7-1. LQS Troubleshooting Reference Chart (Continued) Statistic Change in Value Cause(s) Recommendations Percentage of time DAP is receiving a valid signal from the network. One or more of the following condiCheck for open or bad connections to tions are occurring: line is not local loop. Check other LQS parameters connected to unit, receiving invalid to isolate source of problem.
Troubleshooting Table 7-1. LQS Troubleshooting Reference Chart (Continued) Statistic Change in Value Cause(s) Recommendations Number of multiport/multidrop resynchronizations for each drop. A timing slip or lengthy line disruption occurred on the DDS circuit. Investigate drops that have abnormally high counts compared to other drops. Run DAP diagnostic tests to isolate circuit. Number of times the central DAP has resynchronized the entire network (global resync count).
Appendix A Technical Specifications Standalone Dimensions General Height 3.0 inches (7.6 cm) Width 8.0 inches (20.3 cm) Depth 12.0 inches (30.5 cm) Weight 3.5 pounds (1.58 kg) DTE Interface EIA RS-232-E, optional CCITT V.35 Channel Interface 8-position modular jack RJ-48S, AT&T standard CMS Interface 10-position modular jack (T7) DTE Rates Synchronous: 1.2 to 52.8 Kbps in multiples of 1200 bps (except 3.6 and 6 Kbps are not provided) and 56, 57.
Excalibur Multirate DAP Installation and Operation Operating Range Line Rate (Kbps) Wire Gauge Distance* (feet) dB 72 19 60k -45 72 26 17k -45 56 19 64k -45 56 26 18k -45 19.2 19 71k -40 19.2 26 25k -40 9.6 19 87k -40 9.6 26 34k -40 4.8 19 114k -40 4.8 26 47k -40 2.4 19 154k -40 2.4 26 66k -40 * Distance meets AT&T Publication 62310 impairment requirements.
Technical Specifications Analog IDBU Option Output Level Programmable: 0 dBm to -12 dBm Permissive: -9 dBm Ringer Equivalence 1.1 B Operating Range 0 dBm to -42 dBm Carrier Frequency V.32 bis: 1800 Hz BIS+: 1866.75 Hz Baud Rate V.32 bis: 2400 Hz BIS+: 2488.
Appendix B ISDN Service Ordering Checklist For Excalibur Multirate DAP ISDN IDBU applications, the following checklist can be used as an aid in ordering ISDN Basic Rate service from your local telephone company. ❏ Request an ISDN Basic Rate Interface (BRI) Line. • U-interface reference point • 2B1Q line coding ❏ Choose one of the following. • 1B+D Service (Recommended selection) • 2B+D Service (The DAP will only utilize 1B.) ❏ The ISDN IDBU supports the following switch types and software protocols.
Excalibur Multirate DAP Installation and Operation ❏ For service offered from an AT&T 5ESS, turn the following features Off. Packet Mode Data Multiline Hunt Multiple Call Appearances Electronic Key Telephone Sets (EKTS) Shared Directory Numbers Accept Special Type of Number Intercom Groups Network Resource Selector (Modem Pools) Message Writing Hunting InterLata Competition ❏ For service offered from a Northern Telecom DMS-100, request a 1B+D line with the following features. Line Type:...................
Appendix C Quick Reference Menu Flowchart Introduction The following Quick Reference Menu Flowchart shows you how the Excalibur Multirate DAP's front panel LCD screens are arranged in each level of the menu tree. It is designed to let you quickly locate and move to the screen you need. To move down through the flowchart, press the front panel button (1 - 4) beneath the desired option. To move up through the flowchart, press the Escape button.
Status Notes 1. The top line of the Top Level Menu displays Excalibur DAP for units without dial backup, DAP +4W 56K DBU for units equipped with the Switched 56 IDBU option, DAP + 2 wire 14.4K DBU for units equipped with the Analog IDBU option, or DAP + ISDN DBU for units equipped with the ISDN IDBU option. 2. This parameter appears on the screen only for units equipped with the Analog, Switched 56, or ISDN IDBU option. 3.
Status Excalibur DAP 1 Local Remot Addrs Serve FPTst RTN ALNet 6 Local Mode Stats Confg Diag Dial Call Secur Status Mode DAP Dial 2 Serve Digtl Unit Line Analg Tests Alarm Drops 3 Chnnl 7 Drop Status 5 Addrs Resyn LComm No units are out of communication 001 002 003 004 005 006 9.6 TL 0dBm RL-11dB Service=DDSNI Q=Best Svc=DDSNI4 Tst=N Rate=19.2 Usable=18.0 P1 9.6 DTR CTS TxD DSR TxC= DCD RTS TxLvl=+1.
This parameter appears on the screen only when the RTS Simulation parameter is disabled. This selection appears on the screen only when the service is set for LADC or LDM. This parameter does not appear on the screen when the interface is V.35 or when the service is set for DDS or CC64. (The unit defaults to Signal Quality.) This parameter does not appear on the screen when the interface is V.35. This parameter appears on the screen only when the service is set for DDSNI, CC64, or C64NI.
Const DCD= 0 Dial Call PRate Dial All DSR ON= SQlty C-5 EIA18= Enabl Disab None Alarm Keys Both Beeper: RemDL Disab EIA21= Const DDSUp DAPOn Tests DSR Off= XMT Squelch= Disab Enabl RM Remote DLoop= V45DL EIA18 5 RemDl Systm ALNet User Secur RTN Thrsh Chnnl Configuration Mode Diag Local Mode Excalibur DAP Addrs Serve FPTst DAP Configuration CTSDI Sqlch DSROf DSROn EIA 21 4 Beepr Alias RCP Confg Remot DAP CTS Delay= 10 20 40 Rx Clock= Exter Inter TxClk= Exter Slave Inter 3
CTS Control= DTE DTR Control= Async Config AsDaB AsMod Async 8 9 Sync 11 Exten 10 V13 Norma Async Mode Async Proto= 00B DCD Simulation= 00B Disab Async Data Bits= Sync V13 Proto=Sync Disab RTS Simulation= RTSOn DDSUp Const V.
This parameter does not appear on the screen when the Clear Secondary Channel parameter is enabled. This parameter appears on the screen only when the service is set for DDS, DDS-SC, or LDM. It does not appear for DDS-SC or LDM when the Clear Secondary Channel parameter is enabled. The unit defaults to Excalibur. This parameter appears on the screen only when the service is set for DDS. This parameter does not appear on the screen if the unit is set for a remote unit in a multipoint network.
No Const BCKSP M Blank Excalibur DAP DEL Excalibur DAP Excalibur DAP Dec Accpt Other Other Other Enabl Disab Disab Remote Diag= Local Diag= 1556 DSURD Enabl 1500 Sec Chnl Fmt= Switc C-9 Disab Enabl Enabl Alarm Detect= Disab On Disab Disab T7 Analog= Enabl w/Dat Off Diag Compatibility= ToDia Route Sec Chnl= DiagC RoutS 5 T7 Digital= DigRg Lcl Alarm Disp= Enabl LAlmD AnaRg Port Speed = None Sync 52800 51600 50400 49200 Thrsh Chnnl User Systm Configuration Mode Alia
When 9600 or 9000 is selected, you may also select Coded or Uncoded. The Compliance parameter selects the mode of dial operation (Programmable or Permissive). The default setting is Permissive. To change this setting, you must enter a special password that must be obtained from your Racal service representative. The service representative will ensure that you are adhering to local compliance regulations before giving you the password. 1. 2.
Dial Mode= BIS+ Speed Inter TxClk Dialr Alias DWait Prgrs ADial 5sec SDial Disc Auto Disconnect= NoDTR None Chnnl User Systm Ded Line Test= None DDSUp LTest Interval= 5min 10min 15min 30min Number of Retries= Inc Dec Accpt Number of Retries Alt1 Alt2 Alt3 Alt4 Temp C-11 Pri Answer Back= Enabl Disab Dial DCD Range= Norma Exten Port Port-1 Configuration RTSSm DCDSm DCD Simulation= Disab V13 RTS Simulation= Disab V13 Cmply 2 Tx Equalizer= Flat Stat AnsBk TxEql Answer Calls= Alwys Ne
Call Progress= Disab ADial Pri Number of Retries= Inc Dec Accpt Port Short Long Ring Detect= RingD Ded Line Test= C-13 None DDSUp Port-1 Configuration= RTSSm DCDSm DCD Simulation= Disab V13 OOB RTS Simulation= Disab V13 OOB Answer Calls= Alwys Never DDown NoSig Answr Systm LTest Interval= 5min 10min 15min 30min Retry LTest LTInv Dial Configuration Configuration Mode PRate Dial Thrsh Chnnl User Number of Retries= Alt1 Alt2 Alt3 Alt4 Temp Auto Disconnect= NoDTR None Switch to Dial= Alwa
1. This parameter appears on the screen only when the service is set for DDS, DDS-SC, CC64, LDM, or LADC.
NI-1 Call Progress= Enabl Disab RCP None Number of Retries= Alt1 Alt2 Alt3 Alt4 Temp C-15 Number of Retries= Inc Dec Accpt Auto Disconnect= NoDTR None Pri Port Port-1 Configuration RTSSm DCDSm DCD Simulation= Disab V13 RTS Simulation= Disab V13 Answer Calls= Alwys Never DDown NoSig Answr LTest Interval= 5min 10min 15min 30min LTinv Systm Ded Line Test= None DDSUp LTest Configuration Mode PRate Dial Thrsh Chnnl User Switch to Dial= Alway DTRon Auto Dial Timer= 5sec 15sec 30sec 60sec Au
This parameter appears on the screen only when the service is set for DDSNI, the Location parameter is set to central, the Network parameter is set to multipoint, and the Automatic Poll parameter is set to disabled. This parameter appears on the screen only when the service is set for DDSNI and the Multiport Framing parameter is set to enabled. For proper operation, all central and all remote units must have the same channel rate assignments. The possible DTE data rate options are: (a) Synchronous - 1.
Resync Limit=02 Dec Accpt TxLvl Lowr Thrsh=dB Inc Dec Accpt Inc RTS Timer= 050 Enabl Disab Time RTS AStr Timer= Enabl Disab Time ConfgThrshTimer RTS DCD DTE INS Inc C-17 1=C2 2=C2 3=C2 4=C3 5=C4 6=C3 Port1 Assigned to C1 C1 C2 C3 C4 C5 C6 P6 _ Channel 1=C1 M Blank Other _ Channel 1=C1 DEL BCKSP Other _ Channel 1=C1 Dec Accpt Other Define Channel Names 4 C1 C2 C3 C4 C5 C6 Cpy-> Define Port Assignments All P1 P2 P3 P4 P5 Port Assignments Defin Dsply C1=1200 C1 C2 C3 C4 C5 C6 C1=1200 3 480
This parameter appears on the screen only for units equipped with the Analog or ISDN IDBU option. For units equipped with the Switched 56 IDBU option, when the unit is in dial backup operation, you can initiate all tests and loops provided in the Diagnostic submenu except the Self-Error Test, DDS Loop Test, Local-Error Test, and NetworkError Test.
Ag: Self Err Tst 0 Clear Ag: DDS Loop Active Ag: DDS Loop Inactive Start LErr NtErr 0T=60s Dec Accpt Self Err Tst Inc Test Duration Timed Cont Select remote Port P1 P2 P3 P4 P5 P6 Clear Insrt Reset C-19 Start Start Test Duration Timed Cont C1: R-DLoop Inactive C1 Diagnostics 4 EEErr DLoop V54DL Loop2 L2Err Test Duration Timed Cont Select remote Port P1 P2 P3 P4 P5 P6 P1: R-DLoop Inactive Port-1 Diagnostics 4 EEErr DLoop V54DL Loop2 L2Err ALNet Secur RTN Ag: Self Err Tet 0 Clear In
This parameter appears on the screen only for units equipped with the ISDN IDBU option. This parameter appears on the screen only during dedicated line operation. This parameter appears on the screen only during dedicated line operation. For Analog IDBU, this parameter does not appear when the Dial Mode is set to 32Bis. For ISDN IDBU, this parameter appears when the Dial Mode is set to ESw56, but if you try to activate the test, the screen displays the message: Error Invalid Configuration.
Pri DBU Master Awaiting Dial Tone Make Call Alt1 Alt2 Alt3 Alt4 Temp Pri Diag Primary Ph#=E _ Other ID1=_ Cpy-> M Blank DTT Terminated Passed DTT Awaiting Dial Tone Other Other ID1=_ Dec Accpt C-21 Call E-E Tst Terminated Passed Call E-E Tst Dialing Target Choose Target Ph# Type Pri Alt1 Alt2 Alt3 Alt4 Temp Inc RTN ALNet Accpt Other Other Copy-> M Blank Other _ Security Password=RMI INS DEL BACKSP Security Password=RMI _ Dec Security Password=RMI _ Inc Inc Security ID=0001_ De
The Remote menu does not appear on the screen when any of the following parameters are set: (a) The service parameter is set to CC64. (b) The Controller parameter is set to No in the RCP Configuration submenu. (c) The Secondary Channel Format parameter is set to anything other than Excal. (d) The Service parameter is set to DDS and the Local Diagnostics parameter is set to Disabled.
Drop Address Rate=56.0 3 Usable=56.0 Service=DDS DDS Usable=52.8 C-23 Enabl Disab RTN sent to Local Press ESC Remot Which Unit to RTN? Local MPFrm Service=C64NI Rate=64.0 Usable=57.6 Rate Enabl Disab Multiport Frame= Network will be Reset Ok C64NI Configuration Service=CC64 Rate=64.0 3 Usable=64.0 4800 2400 Multiport Frame= Rate=56.0 3 Usable=56.
Appendix D Regulatory Information FCC Part 15: Radio/Television Interference This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Excalibur Multirate DAP Installation and Operation FCC Part 68: Requirements For End Users This equipment complies with Part 68 of the FCC regulations. On the bottom of the unit is an equipment label that contains, among other information, the FCC registration number (AP3USA61274-DD-N) and Ringer Equivalence Number (REN) which is 0.2B for the Analog IDBU. If requested, provide this information to your telephone company.
Regulatory Information If the unit causes harm to the telephone network, the telephone company may discontinue your service temporarily. If possible, you will be notified in advance. But if advance notice is not practical, you will be notified as soon as possible. You will be advised of your right to file a complaint with the FCC. Your telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the proper operation of your equipment.
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Index A Address selection............................................... 4-5 Aggregate transition board headers................. 3-22 Alarm buffer clearing alarms.......................................... 6-25 viewing alarms.......................................... 6-23 Alarm connector (see External alarm connector) Alarms ................................... 1-8, 5-35, 5-55, 6-19 Alias submenu ................................................. 5-57 Analog channel status......................................
Index Squelch Primary Transmitter (Sqlch) parameter................................................5-13 Transmit Calibrate (TxCal) parameter ......5-19 Transmit Clock (TxClk) parameter ...........5-12 DAP submenu DSR Off (DSROf) parameter ....................5-13 DBB (Digital Bridge Board) connectors .................................................3-24 RS-232 switchbank settings ......................3-23 switchbank and header settings .................3-22 switchbank and headers, illustration .........
Index cables .......................................................... 3-8 pin/signal assignments listed ...................... 3-9 Dial line connector, analog illustration ................................................... 3-9 Dial line connector, ISDN cables ........................................................ 3-10 illustration ................................................... 3-9 pin/signal assignments listed .................... 3-10 Dial line connector, Switched 56 cables .....................
Index F M Front panel beeper ................................................ 4-1, 5-14 button functions...........................................4-1 illustration ...................................................4-1 LCD screen.......................................... 1-6, 4-1 testing buttons and indicators ....................4-13 Models listed............................................................ 1-3 standalone ...................................................
Index DDS-SC ...................................................... 2-3 description................................................... 1-1 multimode applications, illustration ........... 1-2 Options analog dial backup .................................... 1-11 dual interface connector............................ 1-11 ISDN dial backup ..................................... 1-12 Switched 56 dial backup........................... 1-12 P Parameter Threshold submenu description...................................
Index Switched 56 dial line connector (see Dial line connector, Switched 56) System submenu initiating soft unit reboot ...........................5-60 setting parameter configuration to factory defaults ...................................................5-60 storing parameter configuration ................5-59 swapping parameter configuration ............5-60 T Top Level menu.................................................4-2 Transmit clock (see Clocks) Transmitter calibration...........................
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