Pin Assignments

DTE Drop/Insert Interface

The DTE Drop/Insert interface connector is a DB15-type socket connector (Table D-2). For information about using Relay Contact Sense for external DTE loopback, refer to the Extrn DLB configuration option in the DTE Interface Configuration Options section of Appendix C.

The DTE Drop/Insert cable (Figure D-2) is typically supplied by a DTE vendor. It is made of shielded twisted-pair wires (22 AWG). The cable connector is a DB15 plug. Be sure to connect the shield ground only at the E1 DSU/CSU end to prevent ground loops.

Table D-2

DTE Drop/Insert Connector

Signal

Pin Number

 

 

Receiver Tip from DTE

1

 

 

Receiver Ring from DTE

9

 

 

Transmitter Tip to DTE

3

 

 

Transmitter Ring to DTE

11

 

 

Relay Contact Sense Return

12

 

 

Relay Contact Sense

14

 

 

Shield Ground

2, 4

 

 

Figure D-2. DTE Drop/Insert Cable

3170-A2-GB20-20

December 1996

D-3

Page 118
Image 118
Paradyne 317x E1 manual DTE Drop/Insert Interface, Table D-2, DTE Drop/Insert Connector