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Logical IDs
A logical ID is a number that is associated with each connection on the communications system. There is one set of logical IDs for extensions and one set for lines/trunks.
Line/trunk logical IDs start numbering at the first jack of the first line/trunk module in the control unit with the number 1 up to the number 80. For most line/trunk modules there is a one-to-one correspondence between the jack and the logical ID. The exceptions are as follows:
For extension modules, another set of logical IDs starts numbering at the first jack of the first extension module in the control unit with the number 1 up to 400. For most extension modules there is a one-to-one correspondence between the jack and the logical ID. The exception is the 008 OPT module, which is assigned 12 logical IDs, although the module has only eight physical extension jacks.
