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D-3
3160-A2-GB21-80
March 1999
DTE Drop/Insert Interface
The DTE Drop/Insert (DSX-1) 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
DTE
Interface Configuration Options
of Appendix C,
Configuration Options
.
The DTE Drop/Insert (DSX-1) cable (Figure D-3) is typically supplied by a DTE
vendor. It is made of shielded twisted-pair wires (22 AWG). The cable connector
is a DB15-type plug connector. Be sure to connect the shield ground only at the
DSU/CSU end to prevent ground loops.
Table D-2. DTE Drop/Insert (DSX-1) 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-3. DTE Drop/Insert (DSX-1) Cable