1.4 Hardware Summary
The digital telephone system consists of an electronic Digital Service Unit (DSU)usually referred
to as common equipmentoptional expansion modules to extend station and line capacities,
dedicated digital electronic key telephones, and interconnecting wiring consisting of small, 2- or
4-conductor, twisted-pair cable. The digital telephone system supports all Comdial proprietary
digital telephone models.
NOTE: Sxxxx software only supports DigiTech telephones; Ixxxx software supports all digital
telephones.
The station and line capacity of the base unit and optional expansion module are detailed in the
following chart.
Model
Number
CO/PBX
Capacity
Station
Capacity
G0408 4 8
G0816 8 16
G1632 16 32
GM408 4 8
IMI66–107 Digital Telephone System
Introducing The DSU 1 – 7
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