Replacing the cards, Table 29, Db15 x.21 adapter cable – Nortel Networks BCM1000 User Manual
Page 167
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Chapter 9 Starting the system
167
Installation and Maintenance Guide
shows the wire connections for a DB15 X.21 adapter cable.
Replacing the cards
Refer to
Chapter 20, “Replacing data cards and processing hardware,” on page 281
for instructions
about removing and installing these cards.
Table 29
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
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