Mitel 1000 Owner's Manual page 116

Distinctive Ringing
This feature is primarily intended to support Fax. The Network
Operator can provide a second number on a CO Line that rings with
a different signal. The system is then programmed to ring an
extension that is equipped with a Fax machine when this ringing is
detected. All calls with the normal cadence ring the extensions
programmed in the Incoming ringing programming.
Select those extensions to ring when the second ringing signal type
is detected on the line. Different extensions can be selected when
the system is in day or night mode.
Remote Notification
The various settings for remote notification of voice mail messages
are set here.
Set 'Allowed' on for those extensions allowed to activate remote
notification.
When 'Activated' is set to On the remote notification is activated for
the extension. The extension can activate and deactivate the
feature from within their own voice mailbox.
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