HOTWIRE 7975 M/SDSL STANDALONE TERMINATION UNIT USER’S GUIDE Document No.
Copyright E 1998 Paradyne Corporation. All rights reserved. Printed in U.S.A. Notice This publication is protected by federal copyright law. No part of this publication may be copied or distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the express written permission of Paradyne Corporation, 8545 126th Ave. N.
Important Information Important Safety Instructions 1. Read and follow all warning notices and instructions marked on the product or included in the manual. 2.
Important Information EMI Warnings ! WARNING: 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.
Contents About This Guide H Document Purpose and Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . v H Document Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v H Product-Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi 1 About the Hotwire 7975 Standalone Termination Unit H M/SDSL Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents 3 Initial Startup and Configuration H Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 H Connecting Power to the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Connecting the Unit to an Optional External DC Power Source . . . . 3-2 H Connecting to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3 H Connecting to a System Terminal . . . . . . . . .
Contents 5 Testing H Accessing the Test Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 H Running Network Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 Line Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3 Repeater Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4 Send Remote Line Loopback . . . . . . . . . . . . .
Contents A Configuration Option Tables H Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 H Network Interface Options Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 H Synchronous Data Port Options Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4 H System Options Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7 H Communication Port . . . . . .
About This Guide Document Purpose and Intended Audience This guide contains information needed to set up, configure, and operate the Hotwire 7975 Multirate/Symmetric Digital Subscriber Line (M/SDSL) Standalone Termination Unit and is intended for installers and operators. Document Summary 7975-A2-GB20-40 Section Description Chapter 1 About the 7975 Standalone Termination Unit. Describes the 7975 Termination Unit’s features and capabilities. Chapter 2 Using the Asynchronous Terminal Interface.
About This Guide Section Description Appendix A Configuration Option Tables. Contains all configuration options, default settings, and possible settings. Appendix B Standards Compliance for SNMP Traps. Contains SNMP trap compliance information. Appendix C Cables and Pin Assignments. Contains connector and interface information. Appendix D Technical Specifications. Contains physical and regulatory specifications, network and port interfaces, power consumption values, and accessory part numbers.
About the Hotwire 7975 Standalone Termination Unit 1 M/SDSL Overview Hotwire Multirate/Symmetrical Digital Subscriber Line (M/SDSL) products maximize customer service areas by varying the DSL line rate. This ensures symmetric DSL connectivity over a wide range of telephone line distances and transmission line qualities. Hotwire M/SDSL products can transport at full or fractional payload rates over a 2-wire, full-duplex circuit over varying distances based on the conditions of the 2-wire loop.
About the Hotwire 7975 Standalone Termination Unit Hotwire 7975 Features The Hotwire 7975 M/SDSL Standalone Termination Unit is an endpoint for the chassis-mounted Hotwire 8775 M/SDSL Termination Unit housed in the Hotwire 8600 or 8800 Digital Subscriber Line Access Multiplexer (DSLAM). Two Hotwire 7975 M/SDSL Standalone Termination Units can also be configured to operate in a central office (CO) to customer premises (CP) environment.
About the Hotwire 7975 Standalone Termination Unit Network Configuration Figure 1-1 shows a network application using a 4-port Hotwire 8775 M/SDSL Termination Unit for access concentration in a central office (CO). A frame relay switch and a router are connected, through the termination unit, to partner units supporting a host or router, and frame relay encapsulated or unframed data. V.35 CO Site 7975 Frame Relay Switch E1 Host (Frame Relay Encapsulated Data) V.35 V.35 Router 2.048 Mb over SDSL V.
About the Hotwire 7975 Standalone Termination Unit Front Panel LED Status Indicators Figure 1-2 shows the front panel of the 7975 Standalone Termination Unit. For more information on front panel LEDs, refer to Chapter 4, Monitoring the Unit. TM TE D SL D PO W ER AL AR M TE ST TM 7975 M/SDSL 98-15856 Figure 1-2. Hotwire 7975 Standalone Termination Unit Front Panel Rear Panel Interface Connections Figure 1-3 shows the physical interfaces of the 7975 Standalone Termination Unit.
About the Hotwire 7975 Standalone Termination Unit SNMP Management Capabilities The termination unit supports SNMP Version 1, and can be managed by any industry-standard SNMP manager and accessed using SNMP by external SNMP managers. Management Information Base (MIB) Support For a detailed description of supported MIBs, visit Paradyne’s web site at http://www.paradyne.com.
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Using the Asynchronous Terminal Interface 2 User Interface Access You can communicate with the Hotwire 7975 Standalone Termination Unit with an asynchronous terminal interface (ATI) using one of the following methods: H Direct connection through the COM port. H Using an external modem through the COM port. H Telnet session through the Embedded Operations Channel (EOC). NOTE: Only one asynchronous terminal interface session can be active at a time, and another user’s session cannot be forced to end.
Using the Asynchronous Terminal Interface Initiating an ATI Session The Main Menu screen is displayed on the screen unless a login ID and password is required or the ATI is already in use. If security is enabled on the 7975 Standalone Termination Unit and you used Telnet to access it directly (you did not log in through the MCC), the system prompts you for a login ID and password.
Using the Asynchronous Terminal Interface ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ main Access Level: Administrator Hotwire Model 7975
Using the Asynchronous Terminal Interface The following illustration shows the paths to the different ATI screens.
Using the Asynchronous Terminal Interface Screen Work Areas There are two user work areas: H Screen area – This is the area above the dotted line that provides the menu path, menus, and input fields. The menu path appears as the first line on the screen.
Using the Asynchronous Terminal Interface Navigating the Screens You can navigate the screens by: H Using keyboard keys H Using screen function keys H Switching between the two screen work areas Keyboard Keys Use the following keyboard keys to navigate within the screen. Press . . . To . . . Ctrl-a Move cursor between the screen area and the screen function keys area below the dotted line at the bottom of the screen. Esc Return to the previous screen.
Using the Asynchronous Terminal Interface The current setting or value appears to the right of the field name. You can enter information into a selected field by: H Typing in the first letter(s) of a field value or command. H Switching from the screen area to the screen function area below the dotted line and selecting or entering the designated screen function key.
Using the Asynchronous Terminal Interface Switching Between Screen Work Areas Select Ctrl-a to switch between the two screen work areas to perform all screen functions. " Procedure To access the screen function area below the dotted line: 1. Press Ctrl-a to switch from the screen area to the screen function key area below the dotted line. 2. Select either the function’s designated (underlined) character or press the Tab key until you reach the desired function key.
Using the Asynchronous Terminal Interface Ending an ATI Session Use the Exit function key from any screen to terminate the session. " Procedure To end a session with the asynchronous terminal interface: 1. Press Ctrl-a to go to the screen function key area below the dotted line. 2. Save changes if required. A confirmation message appears if you have made but not saved changes to your configuration. 3. Tab to Exit (or type e or E) and press Enter.
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Initial Startup and Configuration 3 Overview This chapter provides instructions on how to access and configure your unit for the first time. This chapter includes procedures for: 7975-A2-GB20-40 H Connecting power to the unit. H Connecting the unit to the network. H Connecting a system terminal. H Providing initial unit identity information or changing existing identity information. H Configuring your unit using internal switchpacks or using the Configuration Edit menus.
Initial Startup and Configuration Connecting Power to the Unit If your package includes a power pack: Plug the power pack into an ac outlet having a nominal voltage rating between 100–240 Vac. Connect the output cable of the power pack to the connector marked POWER on the rear panel. If your package includes a direct-connection dc power cable: Connect the unit to an external dc power source as described in Connecting the Unit to an Optional External DC Power Source.
Initial Startup and Configuration Connecting to the Network " Procedure To connect your unit to the network: 1. Connect one end of the network cable into the rear panel DSL jack. Connect the other end to your DSL network interface. NOTE: Do not use a flat VF network cable as this may severely degrade the performance of the termination unit. Use only Cat 5 twisted-pair network cable.
Initial Startup and Configuration Entering Identity Information After accessing your unit for the first time, use the Change Identity screen to determine SNMP administrative system information that will be displayed on the Identity screen of the Status branch. To access the Card Identity screen, follow this menu selection sequence: Main Menu → Control → Change Identity main/control/change_identity Hotwire Model: 7975 IDENTITY System Name: lllQJ98-001 System Location: Bldg.
Initial Startup and Configuration " Procedure To enter Change Identity screen information: 1. Position the cursor in the System Name field. Enter a name unique in your network to identify the SNMP managed node (or unit). The maximum length of System Name is 128 characters. 2. Position the cursor in the System Location field. Enter the physical location of the unit. The maximum length of System Location is 128 characters. 3. Position the cursor in the System Contact field.
Initial Startup and Configuration Configuring the Unit Using the Internal Switches Use internal Switchpacks S1 and S2 to manually configure the unit. Use Figure 3-1 to locate Switchpacks S1 and S2. ! HANDLING PRECAUTIONS FOR STATIC-SENSITIVE DEVICES 496-15104 This product is designed to protect sensitive components from damage due to electrostatic discharge (ESD) during normal operation.
Initial Startup and Configuration Switchpack Locations Use Figure 3-1 to locate Switchpacks S1 and S2. Switchpack S1 & S2 ON 1 ON 1 Front 2 2 3 3 4 4 5 6 5 6 7 7 8 8 S2 S1 Rear 98-15937 Figure 3-1.
Initial Startup and Configuration Switchpack Definitions Manually change configuration options by moving Switchpack S1 DIP switches on the card. Table 3-1 lists Switchpack S1 definitions. Table 3-1. Switchpack S1 Definitions Switch # . . . Allows you to . . . 1 Enable or disable Switchpacks S1 and S2. Default in Bold OFF = Switchpacks Disabled ON = Switchpacks Enabled 2 Control Sync Port Type. OFF = EIA-530, RS-449, or X.21 ON = V.35 3 Select the unit’s timing source.
Initial Startup and Configuration Table 3-2.
Initial Startup and Configuration Table 3-3 lists Switchpack S2 definitions. Table 3-3. Switchpack S2 Definitions Switch # . . . Allows you to . . . 1 Control whether the unit is an LTU or an NTU. Default in Bold OFF = NTU ON = LTU 2 Control enabling and disabling of the AutoRate capability. OFF = AutoRate Enabled ON = AutoRate Disabled 3, 4, 5 Select one of eight preset DSL line rates (refer to Table 3-4).
Initial Startup and Configuration Accessing and Displaying Configuration Options To display configuration options, you must first load a configuration into the edit area.
Initial Startup and Configuration Configuration Edit/Display The Configuration Edit/Display screen is displayed when the current, customer, or default configuration is loaded.
Initial Startup and Configuration Configuring AutoRate The M/SDSL AutoRate function is controlled from the Network Interface Options screen and allows you to enable or disable AutoRate from a unit configured as an LTU.
Initial Startup and Configuration Table 3-5. Fixed Rate Payload Rates and DSL Line Rates DSL Line Rate (kbps) 2 Mbps units 144 272 400 528 784 1040 1552 2064 64 P a 128 y l o a d 192 320 448 576 832 1088 1600 256 384 512 640 896 1152 1664 704 960 1216 1728 768 1024 1280 1792 1344 1856 1408 1920 1472 1984 1536 2048 R a t e Configuration Loader The Configuration Loader screen allows you to upload configurations to and download configurations from a TFTP server.
Initial Startup and Configuration " Procedure To upload or download a configuration: 1. Position the cursor in the Image File Name field. Type the name of the file to be downloaded, or the name to be used for the file to be uploaded. The file name may be a regular path name expression of directory names separated by a forward slash (/) ending with the file name. The total path name length can be up to 128 characters.
Initial Startup and Configuration Saving Configuration Options When changes are made to the configuration options through the Configuration Edit/Display branch, the changes must be saved to take effect. Use the Save key or Save Configuration screen. " Procedure To save configuration options changes: 1. Press Ctrl-a to switch to the screen function key area below the dotted line. 2. Select Save and press Enter.
Initial Startup and Configuration Download Code The Download Code screen allows you to download firmware from a TFTP server.
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Monitoring the Unit 4 What to Monitor This chapter presents information on how to access and monitor Hotwire 7975 Standalone Termination Units on the E1 network.
Monitoring the Unit Viewing System and Test Status To view System and Test Status information, follow this menu selection sequence: Main Menu → Status → System and Test Status ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
Monitoring the Unit Health and Status The following messages can appear in the first column of the System and Test Status screen. The highest priority Health and Status message also appears on all ATI screens on the bottom right. Table 4-1. Health and Status Messages Message What Message Indicates System Operational There are no problems detected. LOS at Net, Pt 1 An LOS (Loss Of Signal) condition has been detected on the network interface.
Monitoring the Unit Table 4-1. Health and Status Messages Message What Message Indicates What To Do Net Com Link Down The Network communication link is down. Communications between the management system and the LTU/NTU is not possible. 1. Verify that the network cable is securely attached at both ends. Mismatch Rate, Pt 1 The LTU, in fixed rate, is attempting to communicate at a faster rate than the NTU can handle. If the LTU is a 2 Mbps product: 1. Verify endpoint is not a 1 Mbps product 2.
Monitoring the Unit Test Status The Test Status messages in the following table appear in the right column of the System and Test Status screen. Table 4-3. Test Status Messages Test Status Message Meaning No Test Active No tests are currently running. LLB Test Active, Pt 1 A network Line Loopback test is active on Port 1. RLB Test Active, Pt 1 A network Repeater Loopback test is active on Port 1. DTLB Test Active, Pt 1 A Data Terminal Loopback test is active on Port 1.
Monitoring the Unit Viewing Network Error Statistics The 7975 Standalone Termination Unit maintains error statistics on the network DSL interface for port 1. Statistics are maintained for up to 96 15-minute intervals (24 hours).
Monitoring the Unit Use the virtual function keys to page through the intervals and clear statistics. 7975-A2-GB20-40 This Field . . . Contains . . . Current Interval Timer The number of seconds which have elapsed in the current 15-minute interval. Maximum value is 900 seconds (15 minutes). This counter resets every 15 minutes. Error Events Counter A running total of CRC errors. Range 0 – 65535. This counter resets when the near-end data is cleared.
Monitoring the Unit Viewing Network Performance Statistics Network performance statistics allow you to monitor the current status of the network DSL operations. Performance statistics can assist you in determining the duration of specific conditions and provide a historical context for problem detection and analysis. Statistics are maintained for up to 96 15-minute intervals (24 hours).
Monitoring the Unit This Field . . . Contains . . . Current Interval Timer The number of seconds which have elapsed in the current 15-minute interval. Maximum value is 900 seconds (15 minutes). This counter resets every 15 minutes. DSL Line Rate The rate of the DSL line. Current Interval Performance data for the current 15 minutes. Interval xx Historical performance data for up to 96 15-minute intervals (24 hours) where the value of xx is from 01 to 96.
Monitoring the Unit 7975 Standalone Termination Unit LEDs The following table contains a description of the LEDs on the 7975 Standalone Termination Unit front panel. TM TE D SL D PO W ER AL AR M TE ST TM 7975 M/SDSL 98-15856 Type LED LED is . . . Indicating . . . SYSTEM POWER Green Unit has power. Off No power to the Unit. Flashing Unit is in minimum mode and a download is required. Red Device failure, or Power-On Self-Test (POST) is not complete. Off Self test passed.
Testing 5 Accessing the Test Menu From the Test menu, you can run network tests, data port tests, and a lamp test for the front panel LEDs.
Testing Running Network Tests Network tests require the participation of your network service provider.
Testing Line Loopback Line Loopback (LLB) loops the received signal on the network interface back to the network without change. NTU/LTU Network Interface CAP Framer Port Interface All 1s EIA-530 Port 98-15931 " Procedure To run a Line Loopback: 1. Position the cursor at the Start command next to Line Loopback on the Network Tests screen. 2. Press Enter. The Start command is changed to Stop. 3. To manually stop the test, verify that the cursor is positioned at the Stop command. 4. Press Enter.
Testing Repeater Loopback Repeater Loopback (RLB) loops the signal being sent from the data port back to the data port and to the network interface. NTU/LTU Network Interface CAP Framer Port Interface EIA-530 Port 98-15932 " Procedure To run a Repeater Loopback: 1. Position the cursor at the Start command next to Repeater Loopback on the Network Tests screen. 2. Press Enter. The Start command is changed to Stop. 3. To manually stop the test, verify that the cursor is positioned at the Stop command.
Testing Send Remote Line Loopback The LTU initiates the test by sending a line loopback up or down command to the remote unit for 10 seconds. When the remote unit detects the loopback up command, it puts itself in line loopback and lights the front panel test LED. The remote unit remains in loopback until it receives a loopback down command. The send line loopback tests both units. External equipment can be used to verify the link.
Testing Send and Monitor 511 The LTU initiates the test by lighting the Test LED sending a command to the remote unit to send a 511 test pattern. When the remote unit detects the command, it sends a 511 pattern and lights the front panel test LED. Each unit will send and monitor the 511 pattern. The duration and results of the test are displayed on the Network Test screen of each unit. NOTE: The send and monitor test is not a loopback test. Each unit independently sends and monitors a 511 pattern.
Testing Running SYNC Data Port Tests To access the SYNC Data Port Tests screen, follow this menu selection sequence: Main Menu → Test → SYNC Data Port Tests ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎ
Testing Data Terminal Loopback Data Terminal Loopback (DTLB) loops the user data back to the DTE. This loopback is located as closely as possible to the user data port (DTE) interface. NTU/LTU Network Interface All 1s CAP Framer Port Interface EIA-530 Port 98-15933 " Procedure To run a Data Terminal Loopback: 1. Position the cursor at the Start command next to Data Terminal Loopback on the SYNC Data Port Tests screen. 2. Press Enter. The Start command is changed to Stop. 3.
Testing Data Channel Loopback Data Channel Loopback (DCLB) loops the data from the network interface back to the network. This loopback is located as closely as possible to the user data port (DTE) interface. NTU/LTU Network Interface CAP Framer Port Interface All 1s EIA-530 Port 98-15934 " Procedure To run a Data Channel Loopback: 1. Position the cursor at the Start command next to Data Channel Loopback on the SYNC Data Port Tests screen. 2. Press Enter. The Start command is changed to Stop. 3.
Testing Send Remote Data Channel Loopback The local termination unit can send an Up or Down sequence to request the start or stop of a Data Channel Loopback (DCLB) on a remote unit. Port Interface Local Remote NTU/LTU NTU/LTU Framer CAP CAP Framer Port Interface All 1s EIA-530 Port 98-15935 " Procedure To send a Remote DCLB: 1. Position the cursor at the Up or Down selection next to Send Remote DCLB on the SYNC Data Port Tests screen. 2.
Testing Device Tests The Device Tests branch is used to access the only card-level test, the Lamp Test.
Testing Ending an Active Test Except for the Remote Send Line Loopback and Remote DCLB, a test initiated by the user can be ended by the user. Tests can also be terminated automatically by enabling the Test Timeout option from the System Options Menu. H A Test Timeout option is available to automatically terminate a user-initiated Loopback or Pattern test (as opposed to manually terminating a test) after it has been running a specified period of time. The default is 10 minutes.
Messages and Troubleshooting 6 Overview There are many messages available to assess the status of the device and contribute to problem resolutions.
Messages and Troubleshooting Configuring SNMP Traps An SNMP trap can be automatically sent out through the EOC or the Management port to an SNMP manager when the 7975 Standalone Termination Unit detects conditions set by the user. These traps enable the SNMP manager to gauge the state of the network. Refer to Appendix B, Standards Compliance for SNMP Traps, for details of SNMP traps supported by the 7975 Standalone Termination Unit.
Messages and Troubleshooting Device Messages The Device Messages in Table 6-1, listed in alphabetical order, can appear in the messages area at the bottom of the ATI screens. Table 6-1. Device Messages (1 of 2) Device Message What Message Indicates Access level is Operator. Configuration is read-only. The operator requested that If configuration options are to be configuration options be edited, use a Login ID that has loaded, but does not have Administrator authority. authority to edit them.
Messages and Troubleshooting Table 6-1. Device Messages (2 of 2) Device Message What Message Indicates What To Do Invalid entry at cursor (1...223, excluding 127) Invalid range. Enter a value within the IP address range. Limit of six Login IDs reached An attempt to enter a new login ID was made, and the limit of six login/password combinations has been reached. 1. Delete another login/password combination.
Messages and Troubleshooting Troubleshooting This 7975 Standalone Termination Unit is designed to provide you with many years of trouble-free service. If a problem occurs, however, refer to Table 6-2 for possible solutions. Table 6-2. Troubleshooting (1 of 2) Symptom Possible Cause Solutions Alarm LED is on. One of several alarm conditions exists. Health and Status displays the alarm condition. Refer to Table 4-1, Health and Status Messages, for recommended action. Cannot access the unit via the ATI.
Messages and Troubleshooting Table 6-2. Troubleshooting (2 of 2) Symptom Possible Cause Solutions Not receiving data. H The network or data port H Check network and data port cables are not connected (check front panel LEDs for more information). H A test is being executed on the unit (check the TEST LED on the front panel). H The far-end device is off-line. Power-Up Self-Test fails. Only Alarm LED is on after power-up. 6-6 The unit has detected an internal hardware failure. cables.
Security 7 Overview The 7975 Standalone Termination Unit provides several methods of security by limiting user access to the ATI through option settings. You can: H Enable the Telnet Login Required option. H Limit the access by setting a Session Access Level option of Operator for the Telnet Session. H Disable the access with the Telnet Session option. See Table A-5, Telnet Sessions Options, in Appendix A, Configuration Option Tables.
Security Access level is also used to control access via Telnet. If the Telnet Session Access Level is set to Administrator (see Table A-5, Telnet Session Options), a Login ID with an Operator access level is not permitted access. Creating a Login Logins apply to the terminal directory connected to the communication port or Telnet access directly to the ATI of the 7975 Standalone Termination Unit. Six login ID/password combinations are available.
Security 3. Create the login by entering the following fields. Login IDs and passwords are case-sensitive. On the Login Entry screen, for the . . . Enter . . . Login ID 1 to 10 ASCII printable characters (hex21 through 7E). Blanks are not allowed. Password 1 to 10 ASCII printable characters that can consist of 0–9, a–z, A–Z, # (pound), . (period), – (dash), and / (slash). Re-enter Password 1 to 10 ASCII printable characters characters that can consist of 0–9, a–z, A–Z, # (pound), .
Security Deleting a Login " Procedure 1. To delete a login record, follow this menu selection sequence: Main Menu → Control → Administer Logins 2. Select PgUp or PgDn and press Enter to page through login pages / records until you find the one to be deleted. 3. Once the correct record is displayed, select De l ete and press Enter. 4. To complete the delete action, select Save and press Enter. When the deletion is complete, Command Complete appears at the bottom of the screen.
Security Limiting SNMP Access through the IP Addresses of the Managers The unit provides an additional level of security through validation of the IP addresses. The SNMP Management option must be enabled. To control SNMP access with IP addresses, follow this menu selection sequence: Main Menu → Configuration → Management → Security Menu Refer to Table A-9, SNMP NMS Security Options. The SNMP access can be limited by: H Enabling NMS IP address checking. H Add each IP address and access level.
Security If entering yes to prompt . . . Then . . . Reset COM Port usage H Port type is set to Terminal H Data Rate (kbps) is set to 9.6 H Character Length is set to 8 H Stop Bits is set to 1 H Parity is set to None Reload Factory Defaults Yes (or y) will restore all factory-loaded configuration and control settings contained in the Default Factory Configuration area are loaded.
IP Addressing 8 Selecting an IP Addressing Scheme The NTU’s network interface IP address is assigned through the peer IP address of the LTU’s Network Interface menu. The NTU obtains the LTU’s IP address and subnet mask when the PPP link is established over the EOC. The LTU IP address and subnet mask are configured from the Communication Protocol Options menu. The 7975 Standalone Termination Unit is assigned an IP address and subnet through the Peer IP address of the M/SDSL Network interface menu.
IP Addressing IP Addressing Example DSLAM NTU 8775 MCC MCC LTU 8775 MCC Base Address = 126.35.50.1 Port 1 Peer IP Address = 126.35.50.5 Port 2 Peer IP Address = 126.35.10.1 MCC Base Subnet Mask = 255.255.255.0 7975 Port 3 Peer IP Address = 126.35.10.2 Port 4 Peer IP Address = 126.35.10.3 7975 7975 DSLAM MCC Base Address = 126.35.1.1 MCC Base Subnet Mask = 255.255.0.0 7975 7975 LTU IP Address = 126.35.7.1 LTU Peer IP Address = 126.35.7.2 NTU IP Address = 126.35.7.
Configuration Option Tables A Overview The tables in this appendix summarize the configuration options accessed when you select the Configuration option on the Main Menu. The Configuration options are arranged into groups based upon functionality. Select . . . To Access the . . . To Configure the . . . Network Network Interface Options, Table A-1 E1 SDSL network interface Ports. SYNC Port Synchronous Data Port Options, Table A-2 Synchronous DTE interface Port.
Configuration Option Tables Network Interface Options Menu For Network Interface Options, refer to Table A-1. To access the Network Interface Options screen, follow this menu selection sequence: Main Menu → Configuration → Current Configuration → Network Table A-1.
Configuration Option Tables Table A-1. Network Interface Options (2 of 2) DSL Line Rate Possible Settings: 144, 272, 400, 528, 784, 1040, 1552 (2 Mbps unit only), 2064 (2 Mbps unit only) Default Setting: 144 Specifies the DSL line rate of the unit. This option is only available when the standalone unit is configured as an LTU and AutoRate is disabled (unit is in fixed rate). 144 – Available payload rates are: 64 and 128 kbps. 272 – Available payload rates are: 192 and 256 kbps.
Configuration Option Tables Synchronous Data Port Options Menu For Synchronous Data Port Options, refer to Table A-2. To access the Synchronous Data Port Options screen, follow this menu selection sequence: Main Menu → Configuration → Load Configuration From → SYNC Ports Table A-2. Synchronous Data Port Options (1 of 3) Port Type Possible Settings: E530A, V.35, RS449, X.21 Default Setting: E530A Determines the port type for the data port. E530A – The port is configured as an EIA-530A compatible DCE.
Configuration Option Tables Table A-2. Synchronous Data Port Options (2 of 3) Invert Transmit Clock Possible Settings: Disable, Enable Default Setting: Disable Specifies whether the clock supplied by the 7975 Termination Unit on the TXC interchange circuit DB (CCITT 114) is phase inverted with respect to the Transmitted Data interchange circuit BA (CCITT 103). This configuration option is useful when long cable lengths between the 7975 Termination Unit and the DTE are causing data errors.
Configuration Option Tables Table A-2. Synchronous Data Port Options (3 of 3) Port (DTE) Initiated Loopbacks Possible Settings: Disable, DTLB, DCLB, Both Default Setting: Disable Allows the initiation and termination of a local Data Terminal Loopback (DTLB) or remote Data Channel Loopback (DCLB) by the DTE connected to this port. (DTLB is equivalent to a V.54 loop 3, and DCLB is equivalent to a V.54 loop 2.) Control of these loopbacks is through the DTE interchange circuits as specified by the V.
Configuration Option Tables System Options Menu For System Options, refer to Table A-3. To access the System Options screen, follow this menu selection sequence: Main Menu → Configuration → Load Configuration From → System Table A-3. System Options DSL Mode Possible Settings: LTU, NTU Default Setting: NTU Controls whether the unit is configured as a control unit or tributary unit. LTU – The unit is configured as a control unit (Line Termination Unit).
Configuration Option Tables Communication Port For Communication Port Options, refer to Table A-4. To access the Communication Port screen, follow this menu selection sequence: Main Menu → Configuration → Load Configuration From → Communication Port Table A-4. Communication Port (1 of 3) Port Use Possible Settings: Terminal, Net Link Default Setting: Terminal Specifies how the communications port is to be used. Terminal – The communication port will be used for an Asynchronous terminal interface.
Configuration Option Tables Table A-4. Communication Port (2 of 3) Stop Bits Possible Settings: 1, 1.5, 2 Default Setting: 1 Specifies the number of stop bits for the communication port. 1 – One stop bit. 1.5 – One and one half stop bits. 2 – Two stop bits used. Ignore Control Leads Possible Settings: Disable, DTR Default Setting: Disable Specifies whether DTR is used. Disable – Control leads are treated as standard. DTR – DTR is ignored.
Configuration Option Tables Table A-4. Communication Port (3 of 3) Disconnect Time (Minutes) Possible Settings: 1 – 60 Default Setting: 5 Number of minutes of inactivity before the session terminates automatically. Timeout is based on no keyboard activity. H Disconnect Time (minutes) option appears when Inactivity Timeout is enabled. 1 to 60 – The Telnet session is closed after the selected number of minutes.
Configuration Option Tables Management and Communication Options Menu The Management and Communication Options Menu includes the following: H Telnet Sessions Options, Table A-5 H Communication Protocol Options, Table A-6 H SNMP Traps Options, Table A-7 H General SNMP Management Options, Table A-8 H SNMP NMS Security Options, Table A-9 Telnet Sessions Options The Telnet Sessions Options (Table A-5) control whether a Telnet session is allowed through an interconnected IP Network.
Configuration Option Tables Table A-5. Telnet Sessions Options (2 of 2) Session Access Level Possible Settings: Administrator, Operator Default Setting: Administrator The Telnet session access level is interrelated with the access level of the Login ID. Refer to ATI Access Levels in Chapter 7, Security for more information. Administrator – This is the higher access level, permitting full control of the 7975 Termination Unit. Access level is determined by the Login ID.
Configuration Option Tables Table A-6. Communication Protocol Options (2 of 2) Node Subnet Mask Possible Settings: 000.000.000.000 – 255.255.255.255 Default Setting: 000.000.000.000 Specifies the Node Subnet Mask. This option is only available when the standalone unit is configured as an LTU. 000.000.000.000 – 255.255.255.255 – Enter an address for the Node Subnet Mask.
Configuration Option Tables SNMP Traps Options To access the SNMP Traps Options screen, follow this menu selection sequence: Main Menu → Configuration → Load Configuration From → Edit → Management and Communication → SNMP Traps Table A-7. SNMP Traps Options (1 of 2) SNMP Traps Possible Settings: Enable, Disable Default Setting: Disable Controls the generation of SNMP trap messages. The options for addresses and types of traps are located in this table.
Configuration Option Tables Table A-7. SNMP Traps Options (2 of 2) Enterprise Specific Traps Possible Settings: Enable, Disable Default Setting: Disable Determines if SNMP traps are generated for enterprise-specific events. Enable – SNMP traps are generated for enterpriseSpecific events. NOTE: Refer to Enterprise Specific Traps in Appendix B, Standards Compliance for SNMP Traps. Disable – No enterprise-specific event traps are sent.
Configuration Option Tables General SNMP Management Options SNMP configuration options allow you to specify the information necessary to support the Termination Unit General SNMP functionality. To access the General SNMP Management Options screen, follow this menu selection sequence: Main Menu → Configuration → Load Configuration From → Edit → Management and Communication →SNMP → General SNMP Management Table A-8.
Configuration Option Tables SNMP NMS Security Options SNMP configuration options allow you to specify the information necessary to support the Termination Unit SNMP NMS Security. To access the SNMP NMS Security Options screen, follow this menu selection sequence: Main Menu → Configuration → Load Configuration From → Edit → Management and Communication → SNMP → Security Table A-9.
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Standards Compliance for SNMP Traps B SNMP Traps This section describes the unit’s compliance with SNMP standards and any special operational features for the SNMP traps supported. The unit supports the following traps: H warmStart H authenticationFailure H linkUp H linkDown warmStart SNMP Trap Description Possible Cause warmStart The unit has reinitialized itself. H Reset command. H Power disruption. The trap is sent after the unit resets and stabilizes. There are no variable-bindings.
Standards Compliance for SNMP Traps linkUp and linkDown The link SNMP traps are: H linkUp – The unit recognizes that one of the communication interfaces is operational. H linkDown – The unit recognizes that one of the communication interfaces is not operational. The network and synchronous port interfaces (physical sublayer) are represented by an entry in the MIB-II interfaces table and supported by the DS1 MIB.
Standards Compliance for SNMP Traps Enterprise-Specific Traps The enterpriseSpecific trap indicates that an enterprise-specific event has occurred. The Specific-trap field identifies the particular trap that occurred. The following table lists the enterprise-specific traps supported by the unit: SNMP Trap Description Possible Cause enterpriseSelfTestFail(2) A hardware failure of the unit is detected during the unit’s self-test. The trap is generated after the unit completes initialization.
Standards Compliance for SNMP Traps The tests that affect the enterpriseTestStart, enterpriseTestStop, and the variable-bindings are different for each particular interface. Diagnostic tests are only supported on the physical E1 network and user data port interfaces.
Cables and Pin Assignments C Overview The following sections provide pin assignments: 7975-A2-GB20-40 H DSL Network Interface Cable H COM Port Interface Cable H EIA-530A Port Interface Connector H EIA-530A to X.21 Interface Cable H EIA-530A to RS 449 Interface Cable H EIA-530A to V.
Cables and Pin Assignments DSL Network Interface Cable The DSL line interface cable is a 20-foot, 24 AWG solid, 2-twisted-pair cable that is RJ48C-to-RJ48C (Figure C-1). Table C-1. DSL Network Interface Connector Signal 8-Pin Plug Pin Number Ring 4 Tip 5 Pin #8 Pin #1 97-15884 RJ48C Plug Unused Unused 1 2 RJ48C Plug Blue Twisted Pair Blue White White Orange Orange Tip 4 5 2 3 3 Ring 1 Twisted Pair White White 4 5 6 6 7 7 8 8 98-15954 Figure C-1.
Cables and Pin Assignments COM Port Interface Cable The COM port connects to either a PC or to an ASCII terminal or printer for alarms. The COM port-to-PC cable is a 14-foot, 26 AWG, 8-conductor cable with an 8-position modular plug keyed connector and a DB9 socket connector (Figure C-2). The COM port connector is an 8-position keyed modular jack (Table C-2). The data signals on this port are referenced to a DTE interface. 98-15886 Figure C-2.
Cables and Pin Assignments Table C-2.
Cables and Pin Assignments EIA-530A Port Interface Connector The EIA-530A Port interface connector information is shown in Table C-3. Table C-3.
Cables and Pin Assignments EIA-530A-to-X.21 Interface Cable The EIA-530A-to-X.21 adapter cable (Figure C-3) provides the X.21 interface shown in Table C-3. 98-15883 530 DB25 SIGNAL PLUG DB15 SOCKET 2 X.21 SIGNAL TD-A TD-B RD-A RD-B 14 3 16 2 9 4 11 TD-A TD-B RD-A RD-B RXC-A RXC-B RTS-A RTS-B 17 9 4 19 6 13 3 10 RXC-A RXC-B RTS-A RTS-B RLSD-A RLSD-B SIG. COMMON TT-A 8 10 7 24 5 12 8 7 RLSD-A RLSD-B SIG. COMMON TT-A TT-B 11 14 TT-B 495-14787 Figure C-3. EIA-530A-to-X.
Cables and Pin Assignments Table C-3. X.
Cables and Pin Assignments EIA-530A-to-RS449 Cable Interface The EIA-530A-to-RS449 adapter cable (Figure C-4) provides the RS449 interface shown in Table C-4. 98-15902 DB37 SOCKET 530 DB25 SIGNAL PLUG 449 SIGNAL SHIELD TD-A TD-B RD-A RD-B 1 2 14 3 16 1 4 22 6 24 SHIELD TD-A TD-B RD-A RD-B TXC-A TXC-B RXC-A RXC-B RTS-A 15 12 17 9 4 5 23 8 26 7 TXC-A TXC-B RXC-A RXC-B RTS-A RTS-B CTS-A 19 5 25 9 RTS-B CTS-A CTS-B DTR RLSD-A RLSD-B DSR SIG. COMMON RL LL RCV. COMMON TT-A TT-B TM SIG.
Cables and Pin Assignments Table C-4.
Cables and Pin Assignments EIA-530A-to-V.35 Cable Interface The EIA-530A-to-V.35 adapter cable (Figure C-5) provides the V.35 interface shown in Table C-5. Pin 1 MM A 98-15885 NN B 530 DB25 SIGNAL PLUG MS34 SOCKET V.35 SIGNAL SHIELD TD-A 1 2 A P SHIELD TD-A TD-B 14 3 16 15 S R T Y TD-B RD-A RD-B TXC-A RXC-A RXC-B RTS 12 17 9 4 AA V X C TXC-B RXC-A RXC-B RTS CTS RLSD DSR SIG. COMMON TT-A 5 8 6 7 24 D F E B U TT-B DTR RL LL TM 11 20 21 18 25 W H N L NN SIG.
Cables and Pin Assignments Table C-5. V.
Cables and Pin Assignments Power Input Connector The required input power connector leads are shown in Table C-6. Table C-6. DC Power Connector Signal Pin Number +24 Vdc 5 +24 Vdc Return 4 Chassis Ground 3 Optional Power Cable The optional power cable is a 14.5-foot, 18 AWG stranded cable. The connector is terminated at one end with a 6-position Molex 39-01-2060 connector. The other end of the cable is terminated with a bare wire that should be connected to a DC power source.
Technical Specifications D Specifications Criteria* Size Width 7.25 inches (18.4 cm) Height 1.5 inches (3.8 cm) Length 9.4 inch (24.9 cm) Weight Approximately 1.25 lbs. (0.6 kg) Approvals Safety Certifications Refer to the equipment’s label for approvals on product. Power The 7975 Termination Unit contains a DC-to-DC converter that requires +24V power input. The +24V power is distributed through a universal power supply supplied with the unit.
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Glossary AMI Alternate Mark Inversion. A line coding technique used to accommodate the ones density requirements of E1 or T1 lines. ATI Asynchronous Terminal Interface. A menu-driven, VT100-compatible system for configuring and managing the termination unit. BPV Bipolar Violation. In a bipolar signal, a one (mark, pulse) which has the same polarity as its predecessor. bridged tap Any part of the local loop that is not in the direct talking path between the CO and the service user.
Glossary DTR Data Terminal Ready. A signal from the DTE to the modem, sent via Pin 20 of the EIA-232 interface (V.24 circuit 108/1, /2), that indicates the DTE is turned ON and connected to the modem. EER Excessive Error Rate. An error rate that is greater than the threshold that has been configured in the device. EOC Embedded Operations Channel. An in-band channel between DSL devices, used for 4 kbps management data. ES Errored Seconds.
Glossary LED Light Emitting Diode. A light or status indicator that glows in response to the presence of a certain condition (e.g., an alarm). LLB Line Loopback. A test in which the received signal on the network interface is looped back to the network without change. loopback A diagnostic procedure that sends a test message back to its origination point. Used to test various portions of a data link in order to isolate an equipment or data line problem. LOS Loss of Signal.
Glossary Telnet Virtual terminal protocol in the Internet suite of protocols. Allows the user of one host computer to log into a remote host computer and interact as a normal terminal user for that host. TFTP Trivial File Transfer application. A standard TCP/IP protocol that allows simple file transfer to and from a remote system without directory or file listing. TFTP is used where FTP is not available. TXD Transmit Data.
Index A Abort All Tests, 5-1 ac transformer, connecting, 3-2 access SNMP, 1-3, 7-4 to async terminal interface, 2-3 access level effective, 7-1 functions available for, 7-1 access to user interface, resetting/restoring, 7-5 Action on Network LOS Alarm, A-5 administer login, 7-2 Alarm, LED, 4-10 ASCII, printable characters, 3-4 ATI (Asynchronous Terminal Interface) access, 2-1 defined, 1-2 exiting, 2-9 initiating session, 2-2 virtual function keys, 2-7 authentificationFailure, B-1 AutoRate, 3-13, A-2 C Cab
Index D G data channel loopback (DCLB), 5-9, A-6 data port loopbacks, DTE initiated, A-6 data port tests, 5-7 data terminal loopback (DTLB), 5-8, A-6 dc power option, 3-2 default configuration area, 3-5 delete, Login ID, 7-4 device, messages, 6-3– 6-4 dimensions, D-1 Disconnect Time, for Telnet session, A-10, A-12 documents, related, vi DOS, TFTP server on, 3-15 download code, 3-17 Download Failed, status message, 4-3 DSL Line Rate, 3-10 Fixed Rate, 3-14 DSL Port, LEDs, 4-10 DSLAM, defined, 1-2 DTE port
Index M P main menu, 2-2, A-1 Management and Communication Options, A-11 management port access, 7-1 settings, 2-1 Margin Threshold, A-2 Memory Fail, status, 4-4 messages alarm and device, 6-1 health and status, 4-3 line 24, 6-3 self-test results, 4-4 test status, 4-5 MIB general support, 1-5 support, 1-5 monitoring, 4-1 part numbers, D-1 Passed, self-test result, 4-4 Payload Rate, A-4 PC connecting, 3-3 requirements, 3-3 Peer IP Address, A-3 performance statistics, 4-8 physical environment requirements
Index SNMP Management Configuration, A-16 SNMP management general, 1-5 limiting access, 7-4 SNMP NMS Security Options, A-16, A-17 SNMP Trap Options, NMS n IP Address, A-17 start-up, ATI, 2-1 status, test messages, 4-5 subnet, IP addresses, 8-1 Switchpack definitions, 3-8 Switchpack locations, 3-7 Switchpack S1 Definitions, 3-8 Switchpack S2 Definitions, 3-10 SYNC Data Port Tests, 5-7 Sync Port, LEDs, 4-10 SYNC Ports Options, A-4 SYNC Pt Down, status message, 4-3 SYNC Pt Failed, self-test result, 4-4 system
