MERLIN LEGEND Communications System Release 5.0
Feature Reference
555-650-110
Issue 1
June 1997
Features
Page 123
Centrex Operation
. The extension user must be aware of the level where he or she is when
making a call or activating a feature.
Figure 5.
Limited Centrex Service
Differences between Full and Limited Centrex
3
Full Centrex and limited Centrex differ in where and how PBX functions are
provided:
■
In full Centrex, the Centrex service provides PBX services to all
extensions.
■
In limited Centrex, the Centrex service provides PBX services to
extensions making calls at the Centrex level on prime lines, while other
services are provided by the communications system, acting as a switch
for calls between extensions and calls that do not require Centrex features.
In full Centrex service:
■
The communications system operates in Behind Switch mode.
■
Calls can be made between Centrex extensions at separate sites served
by the same Centrex.
■
Key mode features are provided by the communications system.
■
Intercom calls can be made between communications system extensions.
Central Office
(External Calls)
Central Office
(External Calls)
Centrex Service
• 4-digit Centrex Calls
• Use of Centrex Features
Centrex Service
• 4-digit Centrex Calls
• Use of Centrex Features
MERLIN LEGEND
Communications System
• 2, 3, or 4-digit Numbering Plan
• Hybrid/PBX Mode Features
Pr
ime Lines
Pr
ime Lines
Access Code
Access Code
Pool
Pool
Dial-Out Code
Dial-Out Code