Instruction manual

Features
In the Limited Centrex configuration, some telephones may have Prime Lines,
while other telephones access the Prime Lines through a pool. Telephones can
also be assigned ground-start, TIE, or DID lines, which is not possible in Full
Centrex. Telephones without Prime Lines can use a Pool button to access
Centrex facilities, or may use an SA button to access pooled facilities by dialing
an access code. Once connected to the pool, users may dial other Centrex
extensions, or dial an access code for outside calls. Outside calls made by
using an SA button to access a pool require two access codes for outside calls,
one access code for the pool, and one for outside lines on the Centrex.
For Limited Centrex operation, the communications system must be
programmed for Key or Hybrid/PBX mode. The total system operates on three
levels as shown in Figure 4. The telephone user must be aware of which level
they are at when making a call or activating a feature.
Figure 4.
Limited Centrex Service
86 Centrex Operation