Lucent Technologies MERLIN LEGEND Release 5.0 Feature Reference page 157

MERLIN LEGEND Communications System Release 5.0
Feature Reference 555-650-110
Features
Centrex Operation
With limited Centrex in Hybrid/PBX mode, DID, tie, WATS, and T1 lines/trunks
can be used. In Key mode, tie, WATS, and T1 lines/trunks can be used. These
lines/trunks cannot be used with full Centrex in Behind Switch mode.
With limited Centrex, outside calls made by using an SA button to access a pool
require two access codes for outside calls: one code for the pool, and one for
outside lines on the Centrex service.
Centrex users should not be assigned calling restrictions because the system
prevents an extension with calling restrictions from sending a switchhook flash to
the central office. Calling restrictions should be placed through the Centrex
service.
Once a call connection is made to Centrex service, the communications system
cannot detect additional calls that are initiated following a Centrex switchhook
flash. Therefore, the SMDR and systems such as Call Accounting System (CAS),
Integrated Solution II (IS II), Integrated Solution III (IS III), and Call Accounting
Terminal (CAT) do not report the additional calls.
Users who have access to both Centrex and communications system features
must be aware of which they are connected to when they attempt to use a feature.
Use of Centrex buttons when connected to the communications system, or of
communications system buttons when connected to Centrex service, causes
misdialed calls.
If a Multi-Function Module (MFM) is not being used on an MLX telephone, the
second extension should be removed, in order to reduce the number of Centrex
lines. The automatic assignment of two extension numbers to each MLX
telephone may mean the installer must renumber the system because the
removed numbers are not automatically reassigned and their removal leaves
empty places in the sequential numbering of extensions. See
Renumbering'' on page 583
Beginning with Release 3.0, companies may use the 800 GS/LS-ID module to
capture calling number identification information (subscribed to from the CO on
loop-start lines only, if available) and MLX display telephones in these systems to
show the number of an outside call received on a line connected to the module.
However, if the customer also subscribes to call waiting through Centrex, the
number of the waiting call is not shown on the MLX display. For more information,
see ''Caller ID'' on page
for additional information.
105.
Issue 1
June 1997
Page 125
''System