AT&T Release 2.0 manual Installing the Direct Station Selector

Installing Telephones and Adjuncts

Installing the Direct Station Selector

The DSS is an optional piece of telephone equipment. One or two DSSs can be connected to an MLX-28D or MLX-20L telephone.

NOTE:

Connect the DSS(s) before you install the MLX telephones.

Before installing the DSS, consider the following:

■Auxiliary power is required under the following circumstances:

—An MLX telephone with an MFM and two DSSs requires a 329A power unit.

—An MLX telephone (without an MFM) has two DSSs requires a KS22911-L2 power unit.

—An MLX telephone with one DSS and an MFM requires a KS22911-L2 power unit, 400B adapter, and the D6AP cord that is provided with the MFM.

—If one carrier has three or more MLX telephones, each with a DSS attached, use aKS22911-L2 power unit, 400B adapter, and D6AP cord for each MLX telephone and DSS after the first two.

■The total length of cords between the KS22911-L2 or 329A power supply and the MLX telephone can be no more than 50 ft (15 m).

■Do not replace the 2-foot (61-cm) D8AC cord (packaged with the DSS) with a longer cord. Improper operation may result.

■Connect each KS22911-L2 power supply to an AC outlet that is not controlled by a wall-switch.

Installing the Direct Station Selector 3-31