USER MANUAL MODEL 2701RC Series NetLink-E1™ E1/Fractional E1 CSU/DSU Rack Card Part# 07M2701RC-B Doc# 086131UB Revised 03/09/01 CERTIFIED An ISO-9001 Certified Company SALES OFFICE (301) 975-1000 TECHNICAL SUPPORT (301) 975-1007 http://www.patton.
TABLE OF CONTENTS 1.0 WARRANTY INFORMATION Section Page 1.0 Warranty Information .............................................................2 1.1 Warranty Statement 1.2 FCC Information 1.3 Service Information 2.0 General Information...............................................................4 2.1 Features 2.2 General Product Description 3.0 Configuration .........................................................................5 3.1 DIP Switch Configuration 3.3 Rear Interface Cards Configuration 4.
cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna • Increase the separation between the equipment and receiver • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 1.
3.0 CONFIGURATION The 2701RC features configuration capability via hardware DIP switches, a software control port, or SNMP through the 1001MC. This section describes all possible hardware and software switch configurations of the network connection. NOTE: The 2701RC factory default is set to DIP switch control. Software control can be enabled either through the control port or SNMP management station. Performing a hardware reset sets the unit for dip switch control. 3.
S1-2 and S1-3 CLOCK MODES Set switch S1-2 and S1-3 to determine the 2701RC’s transmitter timing. S1-2 On Off On Off Network Clock Internal Clock External Clock S1-3 On On Off Off Clock Mode Network (Recieved Recovered) Internal External Network (Recieved Recovered) Transmitter timing is derived using the received line signal (received recovered) from the network. Transmitter timing is derived from an internal clock source. Transmitter timing is derived from DTE terminal tim ing.
SWITCH S2-2: CRC-4 MULTIFRAME In framed mode, S2-2 is used for CRC-4 MF. When CRC-4 is enabled, the unit monitors the incoming data stream for CRC-4 errors. It transmits CRC-4 error counts to the transmitting unit.. When using timeslot zero (TS0), excessive errors may cause loss of frame or loss of sync. If CRC-4 MF is used, both units must be set for set for CRC-4 MF. Otherwise, the one using CRC-4 MF will detect loss of sync.
3.2 CONFIGURING THE REAR INTERFACE CARD The Model 2701RC Series has five interface card options: the Model 1001RCM12548C (DB-25/RJ-48C), the Model 1001RCM13448C (M/34/RJ-48C), the Model 1001RCM11548C (DB15/RJ-48C), the Model 1001RCM11575 (DB-15/Dual BNC). Each of these options supports one DTE interface connection and one 4-wire line connection. Figure 3 below illustrates the five different interface options for the Model 2701RC Series.
The table below provides an overview of interface strap functions for the rear interface cards. Following the table overview are detailed descriptions of each strap’s function. INTERFACE CARD STRAP SUMMARY TABLE #1 Strap Function Position 1&2 Position 2&3 JB3 DTE Shield (Pin1) & FRGND Connected* Open JB4 FRGND & SGND Connected* Open 3.2.2 Model 1001RCM13448C Strap Settings Figure 6 shows the strap location for the Model 1001RCM13448C (M/34) rear card.
SGND & FRGND (JB4) In the connected position, this strap links Signal Ground and frame ground through a 100 ohm resistor. In the open position, signal ground is disconnected from frame ground. JB4 Position 1&2 = SGND and FRGND Connected Position 2&3 = SGND and FRGND Not Connected In the connected position, this strap links DB-15 pin 1 & frame ground. In the open position, pin 1 is disconnected from frame ground.
3.3 VT-100 SOFTWARE CONFIGURATION 3.3.2 Accessing the Menu System This section describes the VT-100 configuration using a 1001CC. For information on configuration using SNMP through the 1001MC, please refer to the 1001MC user manual. The NetLink-E1™rack card features a VT-100 menu-driven system that may be used for local configuration and management.
The password prompt will be displayed as shown below. 3.3.3 Introduction to Main Menu After entering the password, you may access all of the system’s functions and parameters. The Main Menu looks like this: Patton Electronics Menu Management Enter Password: _ . 6) Note: The password is case sensitive. Type the password and press . The factory default password for the unit is: patton NOTE: If the entry is incorrect, the password screen will clear and prompt you again for the correct password.
3.3.4 System Configuration The Main Menu options are briefly described below. The System Configuration menu looks like this: a System Configuration options allow you to change various aspects of the Model 2701RC operation, e.g., framing, line coding, and aggregate bandwidth. b System Diagnostics/Statistics options allow you to monitor the network performance, initiate V.54 loops, local loops, and send test patterns.
b Line Coding: HDB3 (default) d Clocking: Network (default) Options: AMI, HDB3 Options: HDB3: In this line coding, the transmitter substitutes a deliberate bipolar violation when excessive zeros in the data stream are detected. The receiver recognizes these special violations and decodes them as zeros. This method enables the network to meet minimum pulse density requirements. Unless AMI is required in your application, HDB3 should be used whenever possible.
CAS MF Setting: Disabled (default) Options: Enabled, Disabled g i CAS MF: CAS multiframe uses Timeslot 16 (TS16) to send multiframe (MF) alignment data. In CAS MF, a MF is defined as 16 frames, where a frame consists of 32 64kb/s timeslots, numbered 0 to 31. TS16 of the first frame in the MF contains the CAS MF alignment word in the upper four bits. The alignment word is always 0000 (binary).
Front Panel Switches: enabled (default) The Local Loop test has four states: Options: enabled, disabled As the Front Panel Switches may be inadvertently toggled, or in the event that the end-user may not need to use the switches, the installer may disable the front panel switches. Set Switch S2-6 to determine whether the front-panel toggle switches are enabled or disabled. S2-6 On Off Option Front Panel Switches Enabled Front Panel Switches Disabled b 3.2.
Tx1s TxP IdlP If the remote Model 2701RC responds to the local Model 2701RCs terminate loopback request, the local unit then sends an all ones pattern before returning to the Idle state The Model 2701RC is sending a test pattern while in Test Mode The Model 2701RC is sending a test pattern in place of data. The Model 2701RC is not in test mode. d Test Pattern Idle (default) Options: Idle or Sending To send a pattern, press the ‘c’ key and press to send the test pattern.
d 3.2.4 Unit Options The Unit Options screen looks like this (factory default): Loop Timeout The Loop Timeout setting can be set to one of the following: 00:05 = 00:10 = 00:15 = 00:30 = 00:45 = 01:00 = 01:30 = 02:00 = 03:00 = NEVER = e five minutes ten minutes fifteen minutes thirty minutes (default setting) forty-five minutes one hour 90 minutes two hours three hours forever—the unit will remain in loopback without user intervention.
4.0 INSTALLATION f Service Information If you need to contact us for help, you can view the Service Information screen. Here is what it looks like: This section describes the functions of the Model 1001R14 rack chassis, tells how to install front and rear Model 2701RC Series cards into the chassis, and how to connect to the twisted pair interface and the serial interface. 4.
Powering up Your 1001R14 Rack The power supplies that come with your 1001R14 rack system are equipped with a power entry connector on the rear power supply card. The power supplies are Hot-Swappable, so you are not required to remove the cards from the rack while applying power to the system. NOTE: Please refer to the Model 1001R14 Series User Manual AC and DC Rack Mount Power Supplies for fuse and power card replacement information. 3. Locate the correct interface on the bottom of the driver board.
5.0 OPERATION 4.5 CONNECTING TO A DCE DEVICE The rear interface cards on most interface modules are hard wired as DCE . Therefore, you must use a null modem cable when connecting to a modem, multiplexer or other DCE device. This cable should be of the shortest possible length--we recommend 6 feet or less. When purchasing or constructing a null modem interface cable, use the pin diagrams in Appendix C as a guide. NOTE: Pin-out requirements for null modem applications vary between equipment manufacturers.
status of the transmit clock. 5.2 LOOP (V.54 & TELCO) DIAGNOSTICS ALM The alarm LED indicates the presence of a Blue or Yellow Alarm, or Out of Frame condition. The ALM LED will blink on every halfsecond. Alarms may occur due to: • Loss of Synchronization • Loss of Frame • AIS (Blue Alarm) • RAI (Yellow Alarm) ERR TST The error LED indicates various error conditions, including framing bit errors, excessive zeros, controlled slips, severe errors, or bit errors (when sending V.52 test patterns).
2. 3. Verify that the data terminal equipment is operating properly and can be used for a test. Perform a V.52 BER (bit error rate) test as described in Section 5.3. If the BER test equipment indicates no faults, but the data terminal indicates a fault, follow the manufacturer s checkout procedures for the data terminal. Also, check the interface cable between the terminal and the NetLink-E1. 2. 5.2.
APPENDIX A To perform a V.52 test, follow these steps: 1. Activate the local loopback or remote loopback diagnostic. PATTON MODEL 2701RC 2. Activate the test pattern. This may be done in one of two ways: SPECIFICATIONS a. Enter c Test Pattern from the System Diagnostics/Statistics menu and toggle the until the desired test pattern appears. One of two result codes will appear to the right of the c Test Pattern listing: OK Indicates that the received test pattern is error-free. b.
APPENDIX C APPENDIX B PATTON NETLINK-E1™ MODEL 2701RC CABLE RECOMMENDATIONS The Patton NetLink E1™ Series has been performance tested by Patton technicians using twisted-pair cable with the following characteristics: Wire Gauge Capacitance Resistance 19 AWG 22 AWG 24 AWG 83nf/mi or 15.72 pf/ft. 83nf/mi or 15.72 pf/ft. 83nf/mi or 15.72 pf/ft. .0163 Ohms/ft. .0326 Ohms/ft. .05165 Ohms/ft.
APPENDIX D APPENDIX E PATTON NETLINK-E1™ MODEL 2701RC PATTON NETLINK-E1™ MODEL 2701RC E1 INTERFACE PIN ASSIGNMENT V.
APPENDIX E APPENDIX E (continued) (continued) PATTON NETLINK-E1™ MODEL 2701RC PATTON ELECTRONICS MODEL 2701RC INTERFACE PIN ASSIGNMENT EIA-530 INTERFACE PIN ASSIGNMENT X.
