Channel Identifier planning 189
Incorrect ISL channel numbering plans
This section describes numbering plan errors.
Gaps in ISL channel numbering sequence
Table42 "Channel numbering error, gap on one card" (page 189) 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.
Table 4 2
Channel numbering error,gap on one card
Unit number (from TN) ISL Channel number
01
12
23
34
45
511
612
Decreasing channel numbering sequence
Table43 "Channel numbering error, decreasing channel number sequence"
(page 189) 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.
Table 4 3
Channel numbering error,decreasing channel number sequence
Unit number (from TN) ISL Channel number
024
123
222
321
420
519
618
717
Nortel Communication Server 1000
IP TrunkFundamentals
NN43001-563 02.01 Standard
Release 5.5 21December 2007
Copyright© 2007, Nor tel Networks
.