Nortel Networks BCM200/400 - Manual (Page 168)

168 Chapter 9 Connecting the cables
N0060612 N0060612
Table 63 shows the wire connections for a DB15 X.21 adapter cable.
Installing the cards
Refer to “Replacing data cards and processing hardware” on page 307 for the removal and
installation process for these cards.
Table 63 DB15 X.21 adapter cable
DB26 on
WAN card
Signal
DB15
X.21 cable DB26 on
WAN card
Signal
DB15
X.21 cable
1 Chassis Ground 1 14 Transmit Data B 9
2 Transmit Data A 2 15
3 Receive Data A 4 16 Receive Data B 11
4 Request to Send A 3 17 Receive Clock A 6
5 Clear to Send A 5 18
6 19 Request To Send B 10
7 Signal Ground 8 20
8 21
9 Receive Clock B 13 22
10 23
11 External Clock B 14 24 External Clock A 7
12 25
13 Clear To Send B 12 26