D. Pin Assignments

DTE Drop/Insert Interface

The DTE Drop/Insert (DSX-1) interface connector is a DB15-type socket connector (Table D-2, DTE Drop/Insert (DSX-1) Connector). For information about using Relay Contact Sense for external DTE loopback, refer to the Extrn DLB configuration option in DTE Interface Configuration Options in Appendix C, Configuration Options.

The DTE Drop/Insert (DSX-1) cable (Figure D-3, DTE Drop/Insert (DSX-1) Cable) 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

 

 

 

 

 

 

 

 

 

 

 

DB15

 

 

 

 

 

PLUG

 

 

 

TWISTED PAIR

 

 

 

 

 

 

 

 

 

1

 

RECEIVE TIP

 

 

 

 

 

 

 

 

 

TO

 

 

9

 

RECEIVE RING

 

 

 

 

 

 

 

 

2

 

SHIELD GROUND

DTE

 

 

 

 

 

 

 

 

 

 

TWISTED PAIR

 

 

3

 

TRANSMIT TIP

 

 

 

 

 

 

 

 

 

 

 

 

 

11

 

TRANSMIT RING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

SHIELD GROUND

EXTERNAL

 

 

12

 

RETURN

RELAY

 

 

 

 

 

 

CONTACT

 

 

14

 

SENSE

 

 

 

 

 

 

 

 

494-14152-02

Figure D-3. DTE Drop/Insert (DSX-1) Cable

3160-A2-GB21-90

February 2001

D-3

Page 201
Image 201
Paradyne 3164-A2, 3165-A2, 3160-A3, 3161-B3 manual DTE Drop/Insert Interface, Figure D-3. DTE Drop/Insert DSX-1 Cable