Specifications

C-12

Cisco 7100 Series VPN Router Installation and Configuration Guide

78-6341-03

Appendix C Cable Specifications

Cisco 7120-4T1 and Cisco 7140-8T Cables and Pinouts

V.35 Connections

The router end of all V.35 adapter cables is a high-density 60-pin plug. The network end of the adapter

cable provides a standard 34-pin Winchester-type connector commonly used for V.35 connections.

Figure C-7 shows the connectors at the network end of the V.35 adapter cable. V.35 cables are available

with a standard V.35 plug for DTE mode (CAB-V35MT=) or a V.35 receptacle for DCE mode

(CAB-V35FC=). See Table C-12 and Table C-13 for pinouts.

Figure C-7 V.35 Adapter Cable Connectors

Also available, but not shown in Figure C-7, are CAB-V35MC=, a V.35 cable with a plug on the network

end for DCE mode, and CAB-V35FT=, a V.35 cable with a receptacle on the network end for DTE mode.

These cables are used for connecting V.35-equipped systems back to back.

NIL/LL 29 —>10 LL

Circuit ground 30 – 37 SC

DTR/DSR+ 7 —> 11 ON+

DTR/DSR– 8 —>29 ON–

DSR/DTR+ 3 <— 12 TR+

DSR/DTR– 4<— 30 TR–

DCD/DCD+ 5 —>13 RR+

DCD/DCD– 6 —>31 RR–

RxC/TxCE+ 26 <— 17 TT+

RxC/TxCE– 25 <— 35 TT–

Circuit ground 15 – 19 SG

Circuit ground 16 – 20 RC

Mode 1

Ground

––Shorting group

1. HD = high-density.

Table C-11 EIA/TIA-449 Adapter Cable Signals (DCE) (continued)

DCE Cable (CAB-449C=)

H1616a

DTE

DCE