Nortel Networks BCM200, 400 4.0 manual Installing the cards, DB15 X.21 adapter cable

Chapter 9 Connecting the cables 159

Table 60 shows the wire connections for a DB15 X.21 adapter cable.

Table 60 DB15 X.21 adapter cable

DB26 on		DB15
WAN card	Signal	X.21 cable
1	Chassis Ground	1
2	Transmit Data A	2
3	Receive Data A	4
4	Request to Send A	3
5	Clear to Send A	5
6
7	Signal Ground	8
8
9	Receive Clock B	13
10
11	External Clock B	14
12
13	Clear To Send B	12

DB26 on		DB15
WAN card	Signal	X.21 cable
14	Transmit Data B	9
15
16	Receive Data B	11
17	Receive Clock A	6

18

19Request To Send B 10

20

21

22

23

24 External Clock A 7

25

26

Installing the cards

Refer to “Replacing data cards and processing hardware” on page 299 for the removal and installation process for these cards.

BCM200/400 4.0 Installation and Maintenance Guide