Nortel Networks NN43001-563 User Manual
Page 187
Channel Identifier planning
187
Unit number (from TN)
ISL Channel number
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
Two cards, sequential numbering, gap left for expansion
This example is for two ITG-Pentium 24-port trunk cards. To allow room for
replacement by a Media Card 32-port trunk card at a later date, a gap of
eight channels has been left between the cards.
maps the unit number to the ISL
channel number for a two ITG-Pentium 24-port trunk cards with an eight
channel gap between cards. Nortel recommends this configuration as it
makes it easy to replace an ITG-Pentium 24-port trunk card with a Media
Card 32-port trunk card, without affecting the other card.
If no gap is left in the numbering sequence between the cards, conversion
to a Media Card 32-port trunk becomes difficult. The ISL channel numbers
on the first card have no room to expand, making it necessary to fully
re-provision the second IP trunk card.
Table 41
Mapping of unit number to ISL Channel number, two cards in system and
expansion gap
Unit number (from TN)
ISL Channel number
Card 1
0
1
1
2
2
3
3
4
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563
01.01
Standard
Release 5.0
30 May 2007
Copyright © 2007, Nortel Networks
.