Lucent Technologies MERLIN LEGEND Release 5.0 Feature Reference page 295

MERLIN LEGEND Communications System Release 5.0
Feature Reference 555-650-110
Features
Fax Extension
a Message LED, the Message LED turns on. Single-line telephone users without
a Message LED hear a stutter dial tone when a message is waiting. Telephones
located off premises are unable to receive message-waiting indications.
Return Call is not operable for messages received from a fax machine and cannot
be used to make a call to the fax. Return Call is a feature available on MLX
display telephones (including QCCs) that enables a user to automatically call an
extension that left a message.
The Fax Extension feature overrides the distinctive ringing pattern for calls
transferred to a fax extension. When a fax extension receives a transferred call, it
provides one long ring (similar to an inside call) instead of three short rings.
NOTE:
Fax extensions only can send message-waiting indications. They cannot
receive message-waiting indications.
To use the Fax Extension feature, perform the following system programming
tasks for each fax machine:
1. Specify the tip/ring extension connected to the fax machine or fax modem.
2. Specify the extension(s) to receive the message-waiting indication.
3. Specify the number of seconds the system waits before it registers that a
fax has arrived and sends the message-waiting indication (this is the fax
message threshold, which is a systemwide parameter). The range is 0–30
seconds, with a default of 10 seconds.
NOTE:
It is recommended that the default setting (10 seconds) be used for the fax
message threshold. If the fax message threshold is set to less than 10
seconds, the Message LED could be activated on a receiver's telephone
every time the fax machine goes off hook to answer a call, even if a fax has
not arrived. If the fax message threshold is set to more than 10 seconds,
there is a greater likelihood that the Message LED will not be activated on a
receiver's phone whenever short faxes (that is, fax transmissions of less
than 10 seconds in duration) arrive.
Considerations and Constraints
A fax extension can send a message-waiting indication, but it 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.
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Issue 1
June 1997
Page 263