Instruction manual

MERLIN LEGEND Communications System Release 5.0

Installation

555-650-140

Issue 1

June 1997

Installing Telephones and Adjuncts

Page 3-43

Installing Direct Station Selectors

The Direct Station Selector (DSS) is an optional piece of telephone equipment.

You can connect up to two DSSs to an MLX-28D or MLX-20L telephone that is

programmed as an operator console.

Considerations

Review the following items before you begin the installation procedure.

■ Connect the DSSs before you assemble the MLX telephones.

■ Auxiliary power is required under the following circumstances:

— An MLX telephone with an MFM and two DSSs requires a

406743419 power unit.

— An MLX telephone without an MFM, but with two DSSs, requires a

406943837 power unit, 400B adapter, and the D6AP cord

provided with the MFM.

— An MLX telephone with one DSS and an MFM requires a

406943837 power unit, 400B adapter, and the D6AP cord

provided with the MFM.

— If one carrier has three or more MLX telephones, each with a DSS

attached, use a 406943837 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 406743419 power

supply and the MLX telephone must not be more than

50 ft. (15 m).

■ Do not replace the 2-ft. (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.