AT&T MERLIN LEGEND Release 4.0 Feature Reference page 361

Feature Reference
Buttons assigned the same outside lines
Forward and Follow Me
Transfer
An MFM can be assigned as a calling group delay announcement or as a
calls-in-queue alert for a calling group queue.
Tip/ring devices connected on an MFM should not be used with Call
Management System (CMS).
Features and tip/ring applications that require a switchhook flash for operation
(such as AT&T Attendant or MERLIN MAIL Voice Messaging System) cannot be
connected through an MFM because the system ignores the switchhook flash
sent by the device.
Some answering machines have the built-in ability to disconnect when someone
picks up a line they have already answered. However, when a Shared SA
button or a shared personal line is assigned to the MFM, the device cannot
detect when a line is picked up by the sharing user. Therefore, if such an
answering machine is connected to the MFM, the machine does not
automatically disconnect if someone picks up the shared lines that the machine
already answered. Similarly, if the MFM extension is a Primary Coverage
receiver for the MLX telephone or has the MLX extensions calls forwarded to it,
the machine does not automatically disconnect when the telephone user picks
up a call.
When programming, an MFM can not be selected by slot and port ( [
by logical ID ( [
Mode Differences
Hybrid/PBX Mode
When Ringing/Idle Line Preference is turned on and Automatic Line Selection is
set to select an SA button, an outside line can be selected by dialing the pool
dial-out or Automatic Route Selection code.
Key and Behind Switch Modes
When Ringing/Idle Line Preference is turned on and Automatic Line Selection is
set to select an ICOM button, an outside line can be selected by dialing the Idle
Line Access code (usually
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Multi-Function Module
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