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- Page 1 Part# 07M2710 Doc# 08604U2-001, Rev. D Revised 4/4/08 C E R T I F I E D An ISO-9001 Certified Company USER MANUAL MODEL 2710 Series NetLink-T1™ T1/Fractional T1 CSU/DSU SALES OFFICE (301) 975-1000 TECHNICAL SUPPORT (301) 975-1007...
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Page 2: Table Of Contents
GENERAL INFORMATION... 8 Features... 8 Description... 8 Supported Applications... 9 The 2710 as the Interface between the Telco and CPE... 9 The 2710 as a High-Speed Short Range Modem ... 9 CONFIGURATION ... 10 DIP Switch Configuration... 10 Switches SW1, SW2, and SW3... 11 Switch SW4: Line Framing and Coding... - Page 3 Operating Remote Digital Loopback (RL)... 35 Central Office Loops... 36 Bit Error Rate (V.52) Diagnostics... 37 Specifications ... 38 Cable Recommendations... 39 Factory Replacement Parts and Accessories... 40 Interface Pin Assignment... 41 D.1 RJ-48C T1 (DS0) Network Interface (Female Modular Jack) ... 41 D.2 TRS Jack (RS-232 Control Port) ...
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Page 4: Compliance Information
Technical Support at (301) 975-1007. 1.1 WARRANTY STATEMENT Patton Electronics warrants all Model 2710 Series components to be free from defects, and will—at our option—repair or replace the product should it fail within one year from the Þrst date of shipment.This warranty is limited to defects in workmanship or materials, and does not cover customer damage, abuse, or unauthorized modiÞcation. -
Page 5: Radio And Tv Interference
The telephone company may decide to temporarily discontinue your ser- vice if they believe your Model 2710 Series may cause harm to the tele- phone network. Whenever possible, they will contact you in advance. If you elect to do so, you have the right to Þle a complaint with the FCC. -
Page 6: Fcc Compliance
The telephone company may decide to temporarily discontinue your ser- vice if they believe that the Model 2710 may cause harm to the telephone network. Whenever possible the telephone company will attempt to notify you in advance. -
Page 7: Service Information
Packages received without an RMA number will not be accepted. Patton Electronics' technical staff is also available to answer any ques- tions that might arise concerning the installation or use of your Patton Model 2710. Technical Services hours: 8AM to 5PM EST, Monday through Friday. -
Page 8: General Information
• Compact Size Plugs Directly into a Router, Switch or other DTE • Made in USA 2.2 DESCRIPTION The NetLink-T1™ Model 2710 Series are single port T1/FT1 CSU/DSUs that provide high-speed WAN connectivity in an ultra-compact housing. Plugging directly into the V.35 WAN port of a switch, router or multiplexer, the NetLink-T1™... -
Page 9: Supported Applications
The Netlink-T1™ can also be used as a high-speed short haul modem for campus applications. The 2710 as the Interface between the Telco and CPE The NetLink-T1™ provides the interface between the service provider and customer equipment, such as a router or switch (See below). -
Page 10: Configuration
Software Configuration Port Figure 1. Model 2710 Series bottom view, showing location of DIP switches The Model 2710 DIP switches (Switches SW1 - SW8) can be conÞgured as either “On” or “Off”. Figure 2 (below) shows the orientation of the DIP switches with respect to ON/OFF positions. -
Page 11: Switches Sw1, Sw2, And Sw3
Switch SW4: Line Framing and Coding Use Switch SW4 to control the Network Line Framing and Coding Options. Set these options to be the same as the Line Framing and Cod- ing Options given to you by your Service Provider. If you are using two Model 2710s together as short range modems, set both units identically. -
Page 12: Line Framing Options
Internal Clock. Transmitter clock is derived from an internal oscillator. Note When using the Model 2710 as a high-speed short range modem, one unit of the link must be conÞgured in Internal Clock mode, and the opposite end unit must be conÞgured for Network... -
Page 13: Switches Sw7 And Sw8: Line Build Out
Switches SW7 and SW8: Line Build Out Use Switches SW7 and SW8 to set the Line Build Out (LBO). The Line Build Out varies the pulse shape and attenuation of the signal sent to the network. The amount of Line Build Out depends on NetLink™ T1’s dis- tance to the last repeater. -
Page 14: Software Configuration
The NetLink-T1™ features a menu-driven command system that allows you to monitor/conÞgure its operating parameters. Follow the instruc- tions below to conÞgure the Model 2710 using the software switches: 1. Plug the 9-pin male end of the cable to your terminal or computer’s DB-9 serial port and start up the terminal emulator software if nec- essary. -
Page 15: Introduction To Main Menu
enter will not be shown. For security, asterisks will be displayed for each letter you type. The maximum length of the password, which can include any character the terminal can generate, is 16 characters. 6. The NetLink-T1™ will then display the Main Menu screen. Introduction to Main Menu After entering the password, you may access all of the system’s func- tions and parameters. -
Page 16: System Configuration
Unit Options allow you to customize the NetLink-T1™ for your location. You can change the default header names to give each unit a unique name and password. Also, you can reset the unit to its default settings without the manual. It also has a Service Infor- mation screen in case you need technical assistance from Pat- ton. - Page 17 both synchronize the terminal equipment and to identify the signal- ing frames.” (Sec. 4.1.1) ESF: This stands for Extended Superframe Format, a line format developed by AT&T. AT&T Technical Reference 54016 (TR 54016) deÞnes the ESF, a format which is commonly used to allow monitor- ing of the network interface performance over the Facility Data Link (FDL).
- Page 18 B8ZS: Bipolar violations occur when consecutive pulses are of the same polarity. In B8ZS, or Bipolar Eight Zero Substitution, bipolar violations are introduced deliberately to indicate that eight zeros have been transmitted. This special encoding is recognized by the receiver and decoded correctly. See AT&T TR62411 Section 4.2.2 for a detailed description of B8ZS.
- Page 19 – Clocking: Network (default) Options: Network, Internal, External Network: This is the most commonly used setting when connect ing to a carrier’s network. In this mode, the unit recovers the clock from the received signal and uses it to transmit data. In this way the unit remains synchronized to a master clock.
- Page 20 – ESF Data Link: ANSI T1.403 (default) Options: ANSI T1.403, AT&T TR54016 ANSI T1.403: This ANSI developed standard (see ANSI T1.403- 1995: Network-to-Customer Installation—DS1 Metallic Interface) uses the FDL to send and receive one second Performance Report Messages (PRMs). The messages contain the NI performance over the last four seconds.
- Page 21 Options: EEPROM, Switch The NetLink-T1™ can be initialized via the conÞguration in the on-board permanent memory (EEPROM) or via the internal DIP switches (Switch). Once the unit is powered up, you may change the settings through the control port or the DIP switches.
- Page 22 – DS0 Channel ConÞguration Menu: [ Bandwidth/# Channels = 1,536/24 ] (default) The DS0 Channel ConÞguration Menu has a sub-menu that looks like this: You may conÞgure the NetLink-T1™ to operate with any combination of active and inactive DS0 channels in this screen. When you execute the Save Changes command, the selected settings will be saved to perma- nent memory, and the system will be updated to operate with the new channel settings.
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Page 23: System Diagnostics
System Diagnostics The System Diagnostics/Statistics screen looks like this: Note This screen is updated once per second. The System Diagnostics/Statistics options and functions are described below. – Local Loop: Idle (default) The Local Loop is a bi-lateral loopback in which the data from the local DTE and the data from the remote unit are looped back to their respec- tive sources (See “Bit Error Rate (V.52) Diagnostics”... - Page 24 – Remote Loop: Idle (default) The Remote Digital Loopback (RDL) test checks the performance of both the local and remote NetLink-T1™s, as well as the communication link between them. Data from the local DTE is sent across the entire commu- nication circuit and looped back to the local DTE.
- Page 25 The NetLink-T1™ receiving a RL can be in one of the following states: RxPr– The NetLink-T1™ is receiving a preparatory pattern. Sack– The NetLink-T1™, upon receiving a preparatory pattern, sends an acknowledgement message. RL– The NetLink-T1™ is in remote loopback mode. RxTr–...
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Page 26: Network Interface (Ni) Status
In this example, various two or three-letter messages are displayed within the brackets, illus- trating what you may see if the Model 2710 is not connected at all or is in a loss of signal condition. Here are the eight status messages. -
Page 27: Valid Interval Count & Current Interval Time
This indicates the local unit’s transmit- ted signal is not reaching the remote unit. Rx Level The Model 2710 displays the current received signal strength in dB. There are four level ranges detected: +2 to –7.5 -7.5 to –15... -
Page 28: Rx Prm
ESF Data Link is set to AT&T TR54016, the unit recognizes Carrier- originated PRMs, which have an address of 3Ah. Rx PRM: 00010000000300023289 Current DIP Switch Settings. The Switch settings are displayed here to facilitate troubleshooting your unit without opening up the unit Þrst. -
Page 29: Unit Options
Unit Options The Unit Options screen looks like this (factory default): – Header Line 1 & Header Line 2 Headers 1 and 2 are provided for easy identiÞcation of your unit after installation. You may want to give each unit a unique name via the header lines to help distinguish one unit from another. - Page 30 – Loop Timeout The Loop Timeout setting can be set to one of the following: 00:05 = Þve minutes 00:10 = ten minutes 00:15 = Þfteen minutes 00:30 = thirty minutes (default setting) 00:45 = forty-Þve minutes 01:00 = one hour 01:30 = 90 minutes 02:00 = two hours 03:00 = three hours...
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Page 31: Installation
The NetLink-T1™ is equipped with DTE, network, and power interfaces. This section brießy describes connection to each. 4.1 DTE INTERFACE CONNECTION The DTE interface is a V.35 DCE presented as an M/34 male connector. This interface is designed to plug directly into a DTE interface (See Appendix D on page 41 for V.35 interface pin assignments). -
Page 32: Power Connection
The NetLink-T1™ powers up as soon as it is plugged into an AC outlet–there is no power switch. Supplying DC Power You may bypass the DC wall adapter and supply DC power directly to the NetLink T1™... -
Page 33: Operation
Once the NetLink-T1™ is installed and conÞgured properly it is ready to place into operation. This section describes the function of the LED indi- cators, and the use of the loopback and pattern test modes. 5.1 LED DESCRIPTIONS The NetLink-T1™ is equipped with seven LED indicators that monitor the status of communication. - Page 34 LOS– The Loss of Sync LED lights when the unit loses synchroniza- tion with the incoming signal. This may happen when there is a fram- ing mismatch or a loss of signal. In unframed mode, the LOS LED monitors the status of the transmit clock. ALM–...
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Page 35: Loop (V.54 & Telco) Diagnostics
5.2 LOOP (V.54 & TELCO) DIAGNOSTICS The NetLink-T1™ offers three V.54 loop diagnostics and is compatible with two Telco loop diagnostics. Use these diagnostics to test the CSU/ DSU and any communication links. These tests can be activated via the software control port (See “System Diagnostics”... -
Page 36: Central Office Loops
To perform an RDL test, follow these steps: 1. Activate RDL. This may be done in two ways: — Enter Remote Loop from the System Diagnostics/Statistics menu and toggle the <Spacebar> until “RL” appears next to the Remote Loop option. —... -
Page 37: Bit Error Rate (V.52) Diagnostics
5.3 BIT ERROR RATE (V.52) DIAGNOSTICS The NetLink-T1™ offers three V.52 Bit Error Rate (BER) test patterns. These test patterns may be invoked along with the LAL and RDL tests to evaluate the unit(s) and the communication links. When a 511, 2047, or QRSS test is invoked, the NetLink-T1™ generates a pseudo-random bit pattern of 511 bits, 2047 bits or 220 bits, respec- tively, using a mathematical polynomial. -
Page 38: Specifications
WAN Speed: WAN Connection: Nominal Impedance: DTE Interface: Line Coding: Line Framing: Receive LBO: Transmit LBO: Clock Options: Diagnostics: Standards: Power Supply: Dimensions: APPENDIX A SPECIFICATIONS 1.544 Mbps RJ-48C 100 Ohms Integral V.35, M/34 mal AMI/B8ZS D4/ESF/Unframed Automatic Selectable - 0, 7.5, 15, or 22.5 dB, plus DSX-1 Internal, external or network clock Responds to CO-initiated D4 loopup... -
Page 39: Cable Recommendations
19 AWG 22 AWG 24 AWG To gain optimum performance from the Model 2710 Series, please keep the following guidelines in mind: • Always use twisted pair wire—this is not an option. • Use twisted pair wire with a capacitance of 20pf/ft or less. -
Page 40: Factory Replacement Parts And Accessories
FACTORY REPLACEMENT PARTS AND ACCESSORIES Patton Model # 10 - 09F... 07M2710... 2710/CM/120... 2710/CM/UI... APPENDIX C Description 6 Foot Control Port Cable, 25mm to DB9F User Manual T1 Nx64 CSU/DSU(M/34 Male, 120VAC) T1 CSU/DSU (V.35 M/34 Male, UI) -
Page 41: Interface Pin Assignment
RX Data (TIP) TX Data (RING) TX Data (TIP) D.2 TRS JACK (RS-232 CONTROL PORT) Pin # Signal Source Tx Data From Model 2710 Rx Data To Model 2710 Sleeve D.3 RS-232 CONTROL PORT (SIGNALS AT DB-25 CONNECTOR) Pin # Signal... -
Page 42: M/34 Connector, Terminal Interface
D.5 M/34 CONNECTOR, TERMINAL INTERFACE Pin # Signal GND (Earth Ground/Shield) SGND (Signal Ground) CTS (DCE Source) DSR (DCE Source, Always On) CD (DCE Source) LL (Local Loop, DTE Source) TM (Test Mode Indicator, DCE Source) RL (Remote Loop, DTE Source) TD (Transmit Data +, DTE Source) RD (Receive Data +, DCE Source) TD/ (Transmit Data -, DTE Source) -
Page 43: Power Supply Interface
Via Main 5VDC power jack (J1) Center Pin:+5VDC @ 300 mA Outer Barrel:Ground Jumper Position for Power via DC Power Jack (default): Via Auxiliary Power Supplied to Pin KK on V.35 connector DC Power supplied to pin KK must be 5VDC ± 5%, 300mA minimum. Jumper Position for Power via Pin KK: Note NetLink-T1™... - Page 44 NOTES _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ Copyright © 2008 Patton Electronics Company All Rights Reserved...
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