Lucent Technologies MERLIN LEGEND Release 5.0 Feature Reference page 468

MERLIN LEGEND Communications System Release 5.0
Feature Reference 555-650-110
Features
Pools
All dial-in tie trunks are assigned to the pool with the factory-set extension
number 891.
All automatic-in tie trunks are assigned to the pool with the factory-set
extension number 892.
NOTE:
The factory setting for the type of line/trunk connected to a 400 LS, 800
GS/LS, 408 GS/LS, 408 GS/LS-MLX, or 800 GS/LS-ID module is
loop-start. The system does not automatically make pool assignments for
loop-start, ground-start, or tie trunks that are emulated by using a T1
facility. Each of these types must be grouped into a pool through system
programming.
The system can have a maximum of 11 pools. Each pool can be assigned to a
button on a maximum of 64 extensions. The number of lines/trunks in each pool is
limited only by the number of lines/trunks connected to the system. However, a
line/trunk can be assigned to only one pool.
Considerations and Constraints
The maximum number of Pool buttons that can be assigned to multiline
telephones, excluding Queued Call Consoles (QCCs), is limited only by the
maximum number of pools allowed (11) and the number of buttons on the
telephone.
The number of lines/trunks in each pool is limited only by the number of
lines/trunks connected to the system. A line/trunk can be assigned to only one
pool.
Each pool should contain the same type of lines/trunks (for example, basic,
WATS, data-only, or foreign exchange) because users cannot control the specific
trunks selected by the system. Ground-start and loop-start lines/trunks of the
same type (for example, WATS) can be mixed in the same pool. Direct Inward
Dial (DID) trunks should not be put into pools; lines/trunks used for Music On Hold
or maintenance alarms cannot be grouped into pools. Also, dial-in tie trunks
should not be placed in a pool that is assigned to a button on the telephone.
NOTE:
On initialization of a Release 1.0 system, all loop-start and
ground-start line/trunk programming reverts to loop-start. The
ground-start pool never has trunks assigned to it automatically but
must be programmed after the ground-start jacks are designated. In
Release 1.1, 2.0, and later systems, ground-start trunks are
assigned to the ground-start pool on initialization, except in a system
modified for permanent Key mode operation.
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Issue 1
June 1997
Page 436