Paradyne WIRELESS DATA GATEWAY Installation And Operation Manual page 54

DTE Loopback Cable
4-Wire E&M Card and NIM Connections
4-Wire NIM Power Cable
50-Pin Amphenol to RJ48C Adapters
DTE Loopback Cable
The DTE loopback cable is used to connect 3811Plus
modem pairs in the WDG. Each cable connects the
EIA232/V.24 ports of two modems.
Figure B-1 shows the pin assignments and circuitry of
the cable assembly.
TXD
RXD
RTS
CTS
DSR
GND
LSD
LL
DTR
CH
3981-A2-GN31-20
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PIN
2
3
4
5
6
7
8
12
CI
18
20
23
Figure B-1. DTE Loopback Cable
Pin Assignments
November 1996
B
B-1
B-2
B-3
B-3
PIN
2
TXD
3
RXD
4
RTS
5
CTS
6
DSR
7
GND
8
LSD
12
CI
18
LL
20
DTR
23
CH
B-1