Instruction manual

Planning
Mode of Operation
Key Mode
The Key mode makes the most efficient use of the Local Area Signaling Services
(LASS) features available on BRI lines since users are directly connected with
the outside BRI line via a Personal Line button.
In the Key mode, to use the CO Transfer feature to transfer a call and allow the
central office to complete the transfer, the user must select a new programmable
button-the BRI Access button. The user selects the BRI Access button, dials
the outside number, and completes the transfer. The central office processes the
transfer and the BRI line to the MERLIN LEGEND system is freed immediately for
additional call handling. If another type of line button is selected (for example,
Personal Line), the MERLIN LEGEND Trunk-to-Trunk Transfer feature is invoked,
which ties up both the incoming and outgoing lines for the duration of the call.
For other types of outside lines (for example, loop start or ground start), the first
eight outside lines are automatically assigned to all telephones at system start-
up. However, BRI lines are not assigned to line buttons automatically and must
be assigned during system programming.
Hybrid/PBX Mode
In the Hybrid/PBX mode, the BRI lines can be grouped together in pools for
shared use. In addition, BRI lines can be assigned to Personal Line buttons on
multiline telephones for users who require a personal line.
As with a Key system, to use the CO Transfer feature, the user selects the BRI
Access button, dials the destination number, and completes the transfer. The
central office processes the transfer and the BRI line to the system is freed
immediately for additional call handling. When dialing the destination number,
the user does not use an Automatic Route Selection (ARS) or Pool Dial-Out code
to dial the number. In addition, if other types of lines are selected (for example,
Personal Line or Pool buttons), the MERLIN LEGEND Trunk-to-Trunk feature is
invoked, which ties up both the incoming and outgoing lines for the duration of
the call.
Control Unit Planning 4-5