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Cabling the Switch
3-5
Single V.35 WAN Interface (Optional)
The Single V.35 WAN connector is located on a PCI card that offers a separate
DB26S connector that provides the signals needed to interface to V.35 equipment.
Included in the accessory box is a cable that maps the DB26S signals to a standard
V.35 connector. Table 3-1 shows the cable pinouts.
Table 3-1. DB26S-to-V.35 Cable Pinouts
DB26 Signal V.35
1 Shield A
2 TXDA P
3 RXDA R
4 RTSA C
5 CTSA D
6 DSRA E
7 GND B
8 DCDA F
9 RXCB X
10 DCDB no conn
11 SCTEB W
12 TXCB AA
14 TXDB S
15 TXCA Y
16 RXDB T
17 RXCA V
18 LL L
19 RTSB no conn
20 DTRA H
21 RL N
22 DSRB j
23 DTRB no conn
24 SCTEA U
25 TM NN