Instruction manual

Features
Multi-Function Module
At a Glance
Users Affected
Telephone users except DLC, QCC operators
Reports Affected
SMDR
Mode All
Telephones MLX telephones except QCC
Hardware
Tip/ring interface
RISK OF ELECTRICAL SHOCK: Follow all warnings and cautions.
WARNING:
■ 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 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 B-channels assigned to the telephone; therefore,
calls can be made to and from the device independently of the telephone. The
B-channel is also used for the Voice Announce to Busy feature. Because of
this, when a call is active at both the MLX telephone and the MFM device, the
Voice Announce to Busy feature cannot be used to reach the MLX telephone
user. Conversely, if the Voice Announce to Busy feature is being used to reach
Multi-Function Module
295