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Models 3151/3161 Interface Connections
B-113000-A2-GA31-80 December 1994
Port Interfaces
The port interface connectors (Model 3161 only)
include the EIA-530A DB25 connector. The V.35
connector and the RS449 connector require an adapter
cable.
EIA-530A DB25 Port Interface Connector
The EIA-530A Port Interface connector information is
shown in Table B-5 and Figure B-9.
Table B-5
EIA-530A Port Interface Connector
Signal
Circuit
Mnemonic
CCITT
Number
Direction Pin
Signal Common AB 102A 7
Signal Common AC 102B 22, 23
Transmitted Data BA 103 To DCE 2 (A)
14 (B)
Received Data BB 104 From DCE 3 (A)
16 (B)
Request to Send CA 105 To DCE 4 (A)
19 (B)
Clear to Send CB 106 From DCE 5 (A)
13 (B)
Received Line Signal Detector CF 109 From DCE 8 (A)
10 (B)
DCE Ready CC 107 From DCE 6
DTE Ready CD 108/1, /2 To DCE 20
Transmit Signal Element Timing
(DTE Source)
DA 113 To DCE 11 (A)
24 (B)
Transmit Signal Element Timing
(DCE Source)
DB 114 From DCE 12 (A)
15 (B)
Receiver Signal Element
Timing (DCE Source)
DD 115 From DCE 17 (A)
9 (B)
Local Loopback LL 141 To DCE 18
Remote Loopback RL 140 To DCE 21
Test Mode TM 142 From DCE 25