Nortel Networks NN43001-563 User Manual
Channel Identifier planning
189
Incorrect ISL channel numbering plans
This section describes numbering plan errors.
Gaps in ISL channel numbering sequence
shows
gaps in the ISL numbering plan sequence. A gap between channel numbers
causes the IP trunk card to be unable to associate the ISL channel number
with the B channel number. Therefore, only units 0 to 4 (loop shelf card 0
to loop shelf card 4) can be used.
causes the IP trunk card to be unable to associate the ISL channel number
with the B channel number. Therefore, only units 0 to 4 (loop shelf card 0
to loop shelf card 4) can be used.
Table 42
Channel numbering error, gap on one card
Channel numbering error, gap on one card
Unit number (from TN)
ISL Channel number
0
1
1
2
2
3
3
4
4
5
5
11
6
12
Decreasing channel numbering sequence
shows an example of a decreasing ISL channel numbering plan.
Using decreasing ISL channel identifiers causes the IP trunk card to be
unable to associate the ISL channel number with the B channel number. In
this example, only unit 0 (loop shelf card 0) can be used.
unable to associate the ISL channel number with the B channel number. In
this example, only unit 0 (loop shelf card 0) can be used.
Table 43
Channel numbering error, decreasing channel number sequence
Channel numbering error, decreasing channel number sequence
Unit number (from TN)
ISL Channel number
0
24
1
23
2
22
3
21
4
20
5
19
6
18
7
17
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563
02.01
Standard
Release 5.5
21 December 2007
Copyright © 2007, Nortel Networks
.