Lucent Technologies MERLIN LEGEND Release 6.1 User Manual

MERLIN LEGEND Communications System Release 6.1
Feature Reference 555-661-110
Issue 1
August 1998
Features
Page 137Centrex Operation
Behind Switch Mode 3
For full Centrex configuration, the communications system must be in Behind
Switch mode.
Behind Switch mode does not support MERLIN MAIL, MERLIN LEGEND Mail,
AUDIX Voice Power, Call Accounting System (CAS), or Call Management System
(CMS). These applications are supported only in Key and Hybrid/PBX modes.
Full Centrex service supports only loop-start facilities. While lines that are not
loop-start lines are not blocked by the communications system, they can cause
dialing errors. Even random use of modules that are not loop-start (such as E&M
modules) throws off the default line assignments. If boards other than loop-start
boards must be used, they must be positioned after the last loop-start line module,
or prime lines on later modules may be assigned incorrectly. If a DS1 module is
used, it must be placed after all loop-start boards on the system so that default
line assignments on the communications system are not affected.
Digital facilities are not supported in Behind Switch mode.
In Behind Switch mode, during periods of high telephone traffic, users may
experience delays in obtaining dial tone from the Centrex system. This could
cause misdialing when using System or Personal Speed Dial.
Calls to calling groups in a system set up in Behind Switch mode follow the
communications system ring pattern, not the central office ring pattern.
Telephone Differences 3
Multiline Telephones 3
MLX Telephones 3
On MLX telephones, special ringing patterns are used to differentiate various call
types. If personalized ringing is used, the personalized ring comes before the
distinctive pattern.
■ Centrex intercom calls are indicated by the personalized ring followed by a
beep.
■ Centrex special or priority calls are indicated by the personalized ring
followed by three short rings.
■ Outside calls are indicated by the personalized ring followed by two short
rings.
■ Centrex special signaling is indicated by the facility-tracking tone.
Adjuncts connected to a Multi-Function Module (MFM) cannot send a switchhook
flash to the Centrex line. (Whenever possible, such adjuncts should be attached
to a 012 module or a 016 module.)

Lucent Technologies MERLIN LEGEND Release 6.1 Specifications

General

Brand	Lucent Technologies
Model	MERLIN LEGEND Release 6.1
Category	Conference System
Language	English