Patton electronics 2720/B User Manual
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Patton electronics 2720/B User Manual

Netlink-t1 t1/fractional t1 csu/dsu
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USER
MANUAL
MODEL 2720/B and 2720/C
Series
NetLink-T1™
T1/Fractional T1 CSU/DSU
Part# 07M2720-UM
Doc# 08615U2-001,
Rev. B
Revised 10/26/06
An ISO-9001
Certified Company
SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
http://www.patton.com

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  • Page 1 USER MANUAL MODEL 2720/B and 2720/C Series NetLink-T1™ T1/Fractional T1 CSU/DSU Part# 07M2720-UM SALES OFFICE Doc# 08615U2-001, (301) 975-1000 Rev. B TECHNICAL SUPPORT Revised 10/26/06 (301) 975-1007 http://www.patton.com An ISO-9001 Certified Company...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1.0 WARRANTY INFORMATION Thank you for your purchase of this Patton Electronics product. This product has been thoroughly inspected and tested and is warranted for One Section Page Year parts and labor. If any questions or problems arise during installation or use of this product, please do not hesitate to contact Patton Electronics 1.0 Warranty Information .............2 Technical Support at (301) 975-1007.

  • Page 3: Industry Canada Notice

    1.3 INDUSTRY CANADA NOTICE telephone service. If your CSU causes harm to the telephone network, the telephone The Canadian Department of Communications label identifies cer- company may temporarily discontinue your service. If possible, they tified equipment. This certification means that the equipment meets will notify you in advance, but if advance notice is not practical, you will certain telecommunications network protective, operational and safety be notified as soon as possible and will be informed of your right to file...

  • Page 4: General Information

    2.0 GENERAL INFORMATION 3.0 CONFIGURATION Thank you for your purchase of this Patton Electronics product. This The Model 2720 features configuration capability via hardware product has been thoroughly inspected and tested and is warranted for One DIP switches or a software control port. This section describes all pos- Year parts and labor.
  • Page 5 3.1.1 Switch S2 Line Framing Options: D4/Superframe: The D4 framing format, as specified in AT&T The table below shows the default configurations for Switch S2. A TR62411 is the standard in which twelve frames make up a description of all S2 options follows this table. superframe.
  • Page 6 Switch S2-6 and S2-7: Clock Mode 3.1.2 Switch S1 Set Switch S2-6 and S2-7 to determine the 2720’s transmitter tim- The chart below shows the default configurations for Switch S1. A ing. description of all S1 options follows this table. S1 SUMMARY TABE S2-6 S2-7...

  • Page 7: Software Configuration

    Switch S1-3: Tx Clock Invert 3.2 SOFTWARE CONFIGURATION Switch S1-3 allows the user to invert the transmit clock originating The Model 2720 features a menu-driven command system that in the 2720. When S1-2 is set for transmit clock, it may be necessary allows you to monitor/configure its operating parameters.
  • Page 8 3.2.1 Introduction to Main Menu When the unit is first turned on, the terminal screen may After entering the password, you may access all of the system’s appear blank. Press the [Enter] key. If your serial connection functions and parameters. The Main Menu looks like this: is good, the unit will immediately display a password prompt.
  • Page 9 3.2.2 System Configuration The Main Menu options are briefly described below. The default System Configuration menu looks like this: System Configuration options allow you to change various aspects of the Model 2720’s operation, e.g., framing, line cod- ing, and aggregate bandwidth. System Diagnostics/Statistics options allow you to monitor the network performance, initiate V.54 loops, local loops, and send test patterns.
  • Page 10 B8ZS: Bipolar violations occur when consecutive pulses are of ESF: This stands for Extended Superframe Format, a line format the same polarity. In B8ZS, or Bipolar Eight Zero Substitution, developed by AT&T. AT&T Technical Reference 54016 (TR bipolar violations are introduced deliberately to indicate that 54016) defines the ESF, a format which is commonly used to eight zeros have been transmitted.
  • Page 11 Clocking: Network (default) ESF Data Link: ANSI T1.403 (default) Options: Network, Internal, External Options: ANSI T1.403, AT&T TR54016 Network: This is the most commonly used setting when connect ANSI T1.403: This ANSI developed standard (see ANSI T1.403- ing to a carrier’s network. In this mode, the unit recovers the 1995: Network-to-Customer Installation—DS1 Metallic clock from the received signal and uses it to transmit data.
  • Page 12 Remote In-band Loops: Enabled (default) unit. This will cause the unit to enter a special mode. Then turn off the unit and change the switch settings to the desired settings. When you Options: Enabled, Disabled turn the unit on again, the unit will be set up with the selected switch settings.
  • Page 13 3.2.3 System Diagnostics Remote Loop Idle (default) The System Diagnostics/Statistics screen looks like this: The Remote Digital Loopback (RDL) test checks the performance of both the local and remote Model 2720s, as well as the communica- tion link between them. Data from the local DTE is sent across the 15 min increments entire communication circuit and looped back to the local DTE.
  • Page 14 The Model 2720 receiving a RL can be in one of the following states: Network Interface (NI) STATUS RxPr The Model 2720 is receiving a preparatory pattern. The Network interface (NI) status is shown in the middle of the Diagnostics/Statistics screen. The brackets are Sack The Model 2720, upon receiving a preparatory pattern, empty when the link is operating normally.
  • Page 15 Receive Alarm Indication [RAI] indicates that the local unit is receiv- Rx PRM ing a Yellow Alarm. This alarm is sent by the remote unit or the central office when it loses the received signal. This indicates the local unit’s The NetLink-T1™...
  • Page 16 Loop Timeout 3.3.6 Unit Information The Loop Timeout setting can be set to one of the following: The Unit Options screen looks like this (factory default): 00:05 = five minutes 00:10 = ten minutes 00:15 = fifteen minutes 00:30 = thirty minutes (default setting) 00:45 = forty-five minutes...

  • Page 17: Installation

    4.0 INSTALLATION 5.0 OPERATION Once the NetLink-T1™ is installed and configured properly it is The Model 2720 is equipped with DTE, network, and power inter- ready to place into operation. This section describes the function of faces. This section briefly describes connection to each. the LED indicators, and the use of the loopback and pattern test modes.

  • Page 18: Loop (V.54 & Telco) Diagnostics

    5.2 LOOP (V.54 & TELCO) DIAGNOSTICS The error LED indicates various error condi- The NetLink-T1™ offers three V.54 loop diagnostics and is com- tions, including framing bit errors, excessive patible with two Telco loop diagnostics. Use these diagnostics to test zeros, controlled slips, severe errors, or bit the CSU/DSU and any communication links.

  • Page 19: Bit Error Rate (V.52) Diagnostics

    Section 5.3. If the BER test equipment indicates no faults, Set the front panel switch to ‘Remote’. but the data terminal indicates a fault, follow the manufactur- er’s checkout procedures for the data terminal. Also, check Perform a bit error rate test (BERT) using the internal V.52 the interface cable between the terminal and the NetLink-T1.

  • Page 20: Appendix A - Specifications

    To perform a V.52 test, follow these steps: APPENDIX A Activate the local loopback or remote loopback diagnostic. PATTON NETLINK-T1 MODEL 2720 Activate the test pattern. This may be done in one of two ways: SPECIFICATIONS WAN Speed: 1.544 Mbps Enter Selected Pattern from the System Diagnostics/Statistics menu and toggle the <Spacebar>...

  • Page 21: Appendix B - Cable Recommendations

    DB9F 07M2720......User Manual teristics: 2720/C/VI......T1 N x 64 CSU/DSU(M/34 female, UI) Wire Gauge Capacitance Resistance 2720/B/VI......T1 N x 64 CSU/DSU(DB25 female,UI) 19 AWG 83nf/mi or 15.72 pf/ft. .0163 Ohms/ft. 22 AWG 83nf/mi or 15.72 pf/ft. .0326 Ohms/ft. 2720/I/VI......T1 N x 64CSU/DSU(10BaseTEthernet,VI) 24 AWG 83nf/mi or 15.72 pf/ft.
  • Page 22 APPENDIX D APPENDIX D (continued) PATTON NETLINK-T1™ MODEL 2720 PATTON ELECTRONICS MODEL 2720 INTERFACE PIN ASSIGNMENT INTERFACE PIN ASSIGNMENT M/34 Connector, Terminal Interface RJ-48C T1 (DS0) Network Interface (Female Modular Jack) Pin # Signal GND (Earth Ground/Shield) Pin # Signal SGND (Signal Ground) RX Data (TIP 1) RX Data (RING1)
  • Page 23 APPENDIX E PATTON NETLINK-T1™ MODEL 2720 EIA-530 INTERFACE PIN ASSIGNMENT DB-25 Female Connector, Terminal Interface Pin # Signal FG (FrameGround) TD (Transmit Data-A, DTE Source) RD (Receive Data-A, DCE Source) RTS (Request to Send-A, DTE Source) CTS (Clear to Send-A, DCE Source) DSR (Data Set Ready-A, DCE Source) SGND (Signal Ground) CD (Carrier Detect-A, DCE Source)

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2720/cNetlink-t1 2720/c series

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