
Channel Identifier planning 185
Gaps in numbering can deliberately be left between IP trunk cards to
allow for later expansion; for example, to allow for later expansion of a
ITG-Pentium 24-Port trunk card to a Media Card 32-port trunk card.
Preferred ISL channel numbering
This section gives several examples of ISL Channel ID numbering.
Single card, sequential numbering, no gaps ITG-Pentium 24-por t
trunk card
This is an example using an ITG-Pentium 24-port trunk card. The first
channel number can be any value, as long as the maximum is less than or
equal to the maximum value of the ISL channel number, which is 382.
Table 39 "Mapping of unit number to ISL Channel number – one card in
system" (page 185) maps the unit number to the ISL channel number for a
single ITG-Pentium 24-port trunk card.
Table 39
Mapping of unit number to ISL Channel number one card in system
Unit number (from TN)
ISL Channel number
01
12
23
34
4
5
56
67
7
8
89
910
10 11
11 12
12 13
13 14
14 15
15 16
16 17
17 18
18 19
19 20
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2007, Nortel Networks
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