Toshiba Digital Telephone User Manual

This chapter provides an equipment overview of the following two optional units and 
describes the features buttons and their associated LEDs.

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Digital Add-on Module (DADM) – add 20 feature buttons to 2000-series digital 
telephones. Up to two DADMs can be connected to a telephone.

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Direct Station Selection (DSS) Consoles – available for system operators who do not 
have an attendant console. (See 

.)

The DADM, model DADM2020, is shown in 

. The buttons can be 

programmed for [DSS], CO line access, and Station or System Speed Dial. Directory Numbers 
or other functions cannot be assigned to DADMs. 

Each [DSS] and 

/LQH

 button has an LED that provides a status of the CO line or station 

assigned to it.

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The [DSS] LED flashes green when the station equipped with an DADM is calling or 
transferring an outside call to a station. (If calling a station, the LED turns steady red when 
the called station answers; if transferring to a station, the LED turns steady red when you 
hang up to complete the transfer.) The DSS LED is steady red whenever the station 
associated with the DSS is ringing, busy, or in the DND mode.

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A Line (CO) LED is green when the CO line is in use by the DADM console user. It is red 
if it is in use by another telephone user.