Multi-Function Module - Lucent Technologies MERLIN LEGEND Release 7.0 Feature Reference

MERLIN LEGEND Communications System Release 7.0
Feature Reference 555-670-110
Features

Multi-Function Module

Multi-Function Module
At a Glance
Users Affected
Reports Affected
Modes
Telephones
Hardware
!
WARNING:
RISK OF ELECTRICAL SHOCK: Follow all warnings and cautions.
ONLY a qualified technician should install, repair, or set options for an MFM.
Do not touch the circuitry on the MFM. Touching the circuitry may result in
component damage from electrostatic discharge.
Before installing the MFM, disconnect all line/trunk and/or power cords
attached to the MLX telephone. This is to ensure that no hazardous
voltages are present during assembly. Ringing voltage from the MFM
attached to the MLX telephone can cause electrical shock if adjustments
are made while the cords are connected.
Description
The Multi-Function Module (MFM) is an optional adapter installed inside an MLX
telephone and used for connecting tip/ring or external alert devices. The MFM
operates on one of the two communications channels assigned to the telephone;
therefore, calls can be made to and from the device independently of the
telephone. The communications channel is also used for the Voice Announce
feature. Because of this, when a call is active at both the MLX telephone and the
MFM device, the Voice Announce feature cannot be used to reach the MLX
telephone user. Conversely, if the Voice Announce feature is being used to reach
the MLX telephone user, calls cannot be made from the device connected to the
MFM. In addition, if the Voice Announce feature is being used at the same time
that a call is received at the MFM extension number, the caller hears ringing, and
the device rings if it can. But the call to the MFM extension number cannot be
answered until one of the communications channels is free (the MLX telephone
user hangs up or the person calling the MLX telephone user hangs up).
Although each MLX extension jack used to connect an MLX telephone is assigned
only one logical ID, the system automatically assigns two extension numbers—
Telephone users, data users
SMDR
All
MLX telephones except QCC
Tip/ring interface
Issue 1
April 1999
446