AT&T MERLIN LEGEND Release 4.0 Feature Reference page 245

Feature Reference
Considerations and Constraints
A fax extension can send the message-waiting indication, but a fax extension cannot
be assigned as a message-waiting receiver for another fax or for a calling group.
If a fax message-waiting indication is deleted by one of the four
message-waiting receivers, the message is deleted from all of the telephones
programmed as message-waiting receivers for the fax.
Do not use this feature for fax machines connected to analog multiline
telephones with a General Purpose Adapter (GPA). In a GPA configuration,
features cannot be assigned to the fax independently of the telephone.
A maximum of 16 fax machines (tip/ring ports) can have the Fax Extensions
feature. Additional fax machines can be installed, but these additional fax
machines cannot have the Fax Extension feature.
Feature Interactions
Conference
Display
Group Calling
Hold
Multi-Function
Module
Ringing Options
Transfer
If an extension is programmed as a fax extension, the telephone at that
extension will be unable to use the Conference feature.
On MLX display telephones, message-waiting indications received by a
fax message-waiting receiver are identified as
telephones, messages are indicated by
Return Call is not operable for messages received from a fax machine
and cannot be used to make a call to the fax.
The type of message indicated does not allow a calling group
message-waiting receiver to distinguish between a message left for the
calling group and a fax or personal message.
The calling group receives fax message-waiting indications directed to
the calling group. The message-waiting receiver cannot distinguish
between messages left for the calling group and fax or personal
messages.
If an extension is programmed as a fax extension, the telephone at that
extension is unable to use the Hold feature.
A single-line telephone with a Message LED connected to an MFM can
receive message waiting indications, but not stutter dial tone.
The Fax Extension feature overrides the distinctive ringing pattern for
calls transferred to a fax extension. When a fax extension receives a
transferred call, the fax extension provides one long ring (similar to an
internal call), instead of three short rings.
If an extension is programmed as a fax extension, the telephone at that
extension is unable to use the Transfer button.
. On analog multiline
extension or caller's name.
245
Fax Extension