Nortel 1000 Description, Installation And Operation Manual page 251

Install and configure IP Trunk 3.01 (and later) node
Table 42
Mapping of unit number to ISL Channel number – two cards in system
and expansion gap (Part 2 of 3)
Unit number (from TN)
14
15
16
17
18
19
20
21
22
23
Card 2 ISL channel numbering starts at 33 (24 numbers from Card 1 + 8
numbers for expansion + first number for Card 2 = 24 + 8+ 1 = 33).
0
1
2
3
4
5
6
7
8
Card 2
IP Trunk Description, Installation, and Operation
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ISL Channel number
15
16
17
18
19
20
21
22
23
24
33
34
35
36
37
38
39
40
41