Lucent Technologies MERLIN LEGEND Release 5.0 Feature Reference page 159

MERLIN LEGEND Communications System Release 5.0
Feature Reference 555-650-110
Features
Centrex Operation
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
Multiline Telephones
MLX Telephones
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.)
Analog Multiline Telephones
On analog multiline telephones, special ringing patterns differentiate various call
types. If personalized ringing is used, the personalized ring comes after the
distinctive pattern.
Centrex intercom calls are indicated by a beep followed by the
personalized ring.
Centrex special signaling is indicated by the facility-tracking tone.
Centrex special or priority calls are indicated by two short rings followed by
the personalized ring.
Outside calls are indicated by one short ring followed by the personalized
ring.
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Issue 1
June 1997
Page 127
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