AT&T MERLIN LEGEND Release 4.0 Feature Reference page 388

Feature Reference
An extension can be programmed as the principal user (owner) of a personal
line. When this is programmed, only the principal owner can forward calls to an
outside number by using remote call forwarding. When the owner has Individual
or Group Coverage, calls received on the personal line follow the owner's
coverage and not the coverage of telephones that also share the personal line.
When no principal user is assigned for a personal line, calls received on the
personal line cannot be forwarded to outside telephone numbers. Calls follow
the Individual Coverage patterns of all senders who share the line and the
Group Coverage pattern of the extension with the lowest logical identification
number (lowest numbered jack on the module).
Two users can join a call in progress (including conference calls) for a
maximum of three users on the same personal line.
Outside trunks used as personal lines cannot be assigned to a pool and cannot
be assigned as loudspeaker paging, Music On Hold, or maintenance alarm
jacks.
Automatic Route Selection (ARS) cannot be used on personal lines.
In all modes, no personal lines are assigned to single-line telephones or tip/ring
devices connected to an 016, 012, or 008 OPT module.
In Release 2.1 and later, calls received on personal lines with Do Not Disturb on
will go immediately to coverage, instead of waiting for the coverage delay
interval.
Mode Differences
Hybrid/PBX Mode
When Ringing/Idle Line Preference is turned on and ALS is set to select an SA
button, the single-line telephone user cannot select the personal line to make
calls. However, outside calls can be received on the personal line.
In Hybrid/PBX mode, the factory setting assigns personal lines to DLC positions
rather than to multiline telephones.
Key and Behind Switch Modes
When Ringing/Idle Line Preference is turned on and ALS is set for an ICOM
button, the single-line user can select the personal line to make an outside call
by dialing the Idle Line Access code (usually
tone.
388
Personal Lines
) while listening to inside dial