Lucent Technologies MERLIN LEGEND Release 6.1 - Limited Centrex Service

MERLIN LEGEND Communications System Release 6.1
Feature Reference 555-661-110
Issue 1
August 1998
Features
Page 132Centrex Operation
Figure 5. 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-like services to all
extensions.
■ In limited Centrex, the Centrex service provides PBX-like 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 for 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
(Exter(External Calls)nal Calls)
Central Office
(External Calls)
Centrex Service
• 4-digit Centre 4-digit Centrex Callsx Calls
• Use of Centre Use of Centrex Featureseatures
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
Prime LinesPrime Lines
Access CodeAccess CodeAccess Code
PooloolPool
Dial-Out CodeDial-Out Code