
96 Chapter 8 Lines overview
NN40020-603NN40020-603
Line pool tips
Line pools are groups of lines. Pooling lines allows you to use fewer lines than there are users. PRI
lines and VoIP lines are always defined into line pools.
• Line pools must never contain a mixture of lines. All lines in a given line pool should go to the
same location.
Table 11 Line numbering for modules and VoIP
DS30
bus
Type of module Line/Loop numbers (default) Line
pool
A-O/Bloc
Access codes
and routes
N/A VoIP trunks (no module) 001-048
3 Integrated BRI loops (2) 061-064
05 /06 Expansion 1
DID4 65-68
DID8 65-76
DTM (T1) 65-88
DTM (NA-PRI) 65-87
DTM (E1 PRI) 65-94
BRI 65-72
CTM4, GATM4 and
4X16
65-68
CTM8, GATM8, 8X16
(upper/lower)
65-68
73-76
ISDN loops
BRI ST 365-380
07/08 Expansion 2
DID4 95-98
DID8 95-106
DTM (T1) 95-118
DTM (NA-PRI) 95-117
DTM (E1 PRI) 95-124
BRI
95-102
CTM4, GATM4 and
4X16
95-98
CTM8, GATM8, 8X16
(upper/lower)
95-98
103-106
ISDN loops
BRI ST 381-396
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