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Installing Telephones and Adjuncts
Before installing the MFM, consider the following:
■ The KS22911-L2 power supply must be connected to an electrical
outlet within 50 ft (15 m) of cord length of the MLX telephone.
■ If you are connecting an MFM and two DSSS to the telephone, a 329A
power unit is required.
■ A longer D8W telephone cord is required if the wall jack is more than
7 ft (213 cm) from the MLX telephone.
The MFM uses one of the two B-channels when it is active. This means that
when an adjunct, such as a fax machine, and the MLX telephone are in use at
the same time, Voice Announce to Busy is not possible. (Voice Announce to
Busy is a feature that allows users to be paged on the speakerphone even if
they are on a call.)
MFM Installation Procedure
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.
3-4
Installing the Multi-Function Module