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2.0  GENERAL INFORMATION 

Thank you for your purchase of this Patton Electronics product.

This product has been thoroughly inspected and tested and is warrant-
ed for One Year parts and labor.  If any questions or problems arise
during installation or use of this product, please do not hesitate to con-
tact Patton Electronics Technical Support at (301) 975-1007.

2.1  FEATURES

• Terminates G.703 and G.704, E1/fractional E1 service
• Available in low-cost standalone or rack-mountable versions
• n x 64 kbps data rates to 2 Mbps
• X.21, V.35, and EIA-530 
• Switch-selectable AMI or HDB3 line encoding options
• Switch-selectable DTE/DCE modes for X.21 version
• 75-ohm dual coax and 120-ohm twisted-pair G.703 connections
• Local and remote loopback diagnostics
• Internal and G.703 network timing
• CE and BABT approvals
• 90-260VAC & 48VDC power options
• Conforms to ONP requirements CTR 12 and CTR 13 for connec-

tion to international Telecom networks

2.2  DESCRIPTION

The Model 2701 receives channelized G.704 (n x 64kbps) or clear

channel E1/G.703 (2.048-Mbps) data from the telco's digital data net-
work. The Model 2701 terminates the G.703 telco interface and con-
verts the data for transmission to a user-oriented serial [X.21, V.35,
and EIA-530 (V.36/RS422)]. The 2701 can connect to a Router, FRAD,
PABX or Multiplexer over its serial interface at nx64kbps data rates up
to 2.048 Mbps.

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3.0  CONFIGURATION

The Model 2701 features configuration capability via hardware DIP

switches. This section describes all possible DIP switch configurations
of the Model 2701.

3.1  DIP SWITCH CONFIGURATION

The Model 2701 has two sets of internal DIP switches that allow

configuration for a wide range of applications. The sets of switches are
accessed from the underside of the 2701. Figure 1 (below) shows the
location of the DIP switches on the bottom of the printed circuit board.

The Model 2701 DIP switches (Switch Sets 1-2) can be configured

as either “ON” or “OFF”. Figure 2 (below) shows the orientation of the
DIP switches with respect to ON/OFF positions.

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Figure 1. Underside of Model 2701, Showing Location of DIP Switches

Front

Rear

ON

S2

S1

OFF

OFF

1 2 3 4 5 6 7 8

DHS-8

Figure 2. Close up of configuration switches 

OFF

ON

ON

Summary of Contents for NetLink 2701/B

Page 1: ...SER MANUAL MODEL 2701 B C D G 703 G 704 NTU with EIA 530 V 35 X 21 Interfaces SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M2701 x A Doc 086101UA Revised 02 08 0...

Page 2: ...h are designed to provide reasonable protection from such interference in a commercial installation However there is no guarantee that interfer ence will not occur in a particular installation If the...

Page 3: ...bps or clear channel E1 G 703 2 048 Mbps data from the telco s digital data net work The Model 2701 terminates the G 703 telco interface and con verts the data for transmission to a user oriented seri...

Page 4: ...into G 703 mode and it transmits user data on all 32 time lots There is no framing information therefore the CRC4 MF SW2 2 switch is ignored In all other rate settings the unit employs G 704 framing...

Page 5: ...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 m...

Page 6: ...ed it is ready to connect to the G 703 G 704 interface to the serial port and to the power source This section describes how to make these connections 4 1 CONNECTING TO THE G 703 NETWORK The Power G 7...

Page 7: ...4 2 2 Connecting to a DCE Device If the Model 2701 serial interface is hard wired as a DCE all except the X 21 version you must use a null modem cable when con necting to a modem multiplexer or other...

Page 8: ...Model 2701 features six front panel LEDs that monitor con nections on the G 703 G 704 and signaling error and test modes Figure 6 below shows the front panel location of each LED Descriptions of each...

Page 9: ...ults but the data terminal indicates a fault follow the manufactur er s checkout procedures for the data terminal Also check the interface cable between the terminal and the Model 2701 5 3 2 Operating...

Page 10: ...te to clear all central office loops 5 3 4 Using the V 52 BER Test Pattern Generator To use the V 52 BER tests in conjunction with the Remote Digital Loopback tests or with Local Line Loopback tests f...

Page 11: ...100 240VAC 50 60Hz 0 4A Humidity Up to 90 non condensing Temperature 0 to 70o C Dimensions 9 0 x 5 3 x 2 0 cm 3 5 L x 2 1 W x 0 78 H A AP PP PE EN ND DI IX X B B PATTON ELECTRONICS MODEL 2701 INTERFA...

Page 12: ...ve Timing Y TC Transmit Clock A AA TC Transmit Clock B 21 Pin Function 1 Shield A 2 TD A 3 RD A 4 RTS A 5 NC 6 NC 7 Signal Ground 8 RLSD A 9 RX Timing DCE B 10 RLSD B 11 TX Timing DTE B 12 NC 13 NC 14...

Page 13: ...tion Pin Signal 1 Frame Ground 2 T Transmit Data A 3 C Control A 4 R Receive Data A 5 I Indication A 6 S Signal Element Timing A 7 BT Byte Timing A 8 SGND Signal Ground 9 T Transmit Data B 10 C Contro...

Page 14: ...th an X 21 interface 2701 I G 703 G 704 NTU w 10Base T EN interface 0805US American Power Cord 0805EUR European Power Cord CEE 7 0805UK United Kingdom Power Cord 0805AUS Australia New Zealand Power Co...

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