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.

3-4Installing the Multi-Function Module

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AT&T Release 2.0 manual MFM Installation Procedure