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APPENDIX B: Pin Configurations
Pin Configuration for V.35 Line Cards Using DB25 Rear Cards in the Pro Switching System
Table B-2. Line Card Configuration
DB25 V.35 Signal1 Frame GND
2 TD+
3 RD+
4 RTS
5 CTS
6 DSR
7 Signal GND
8 DCD
9
10
11 TM
12 TP
13 RC-
14
15 TC+
16 RD-
17 RC+
18 TD-
19
20 DTR
21 RL
22 LL
23 EC-
24 EC+
25 TC-