Mike's PBX Cookbook

ICS Port Numbering

The following tables detail the default line, port, and DN numbering for Norstar ICS systems. ICS #1 is the main unit internal station module, ICS #2 the two trunk expansion slots. These are numbered right to left. Fibre ports are numbered from the bottom up, starting at (Module) 3.

Note, that by default, expansion trunk modules should be added from the highest port down, and expansion station modules from the lowest port up. This will minimise programing.

Modules will need to be disabled and re-enabled in order to be recognised by the processor - this is done in Maintenance. It is not necessary to re-start the ICS in order to add modules.

Series telephones use only the B1 DN. Other devices may need both B1 and B2 channels, therefore requiring B1 and B2 DN's.


Non-expanded system (ICS alone) numbering

Module Lines Ports B1 DN B2 DN DN Ports
ICS #2 001-048 201-248 ---- ---- ----
ICS #1 ---- ---- 21-52 53-84 101-132


Two-port Expansion Cartridge and ICS numbering

Module Lines Ports B1 DN B2 DN DN Ports
Mod 04 049-072 401-412 269-284 333-348 401-416
Mod 03 073-096 301-312 253-268 317-332 301-316
ICS #2 001-048 201-248 ---- ---- ----
ICS #1 ---- ---- 221-252 285-316 101-132


Six-port Expansion Cartridge and ICS numbering

Module Lines Ports B1 DN B2 DN DN Ports
Mod 08 049-072 801-812 333-348 461-476 801-816
Mod 07 073-096 701-712 317-332 445-460 701-716
Mod 06 097-108 601-612 301-316 429-444 601-616
Mod 05 109-120 501-512 285-300 413-428 501-516
Mod 04 121-132 401-412 269-284 397-412 401-416
Mod 03 133-144 301-312 253-268 381-396 301-316
ICS #2 001-048 201-248 ---- ---- ----
ICS #1 ---- ---- 221-252 349-380 101-132


Twelve-port Expanded Cartridge and ICS numbering

Module Lines Ports B1 DN B2 DN DN Ports
Mod 14 ---- ---- ---- ---- ----
Mod 13 ---- ---- ---- ---- ----
Mod 12 ---- ---- 397-412 589-604 1201-1216
Mod 11 ---- ---- 381-396 573-588 1101-1116
Mod 10 ---- ---- 365-380 557-572 1001-1016
Mod 09 ---- ---- 349-364 541-556 901-916
Mod 08 049-072 801-812 333-348 525-540 801-816
Mod 07 073-096 701-712 317-332 509-524 701-716
Mod 06 097-108 601-612 301-316 493-508 601-616
Mod 05 109-120 501-512 285-300 477-492 501-516
Mod 04 121-132 401-412 269-284 461-476 401-416
Mod 03 133-144 301-312 253-268 445-460 301-316
ICS #2 001-048 201-248 ---- ---- ----
ICS #1 ---- ---- 221-252 413-444 101-132