AT&T SBC-420 Line Status Indicators, Volume Control, Making Telephone Calls, Prime Line

TELEPHONE

TELEPHONE OPERATION

LINE STATUS INDICATORS

The status of each line is indicated with a LED in the LINE SELECT keys.

Mode	This Extension	Other Extension
Idle	Off	Off
In Use	Solid Green	Solid Red
On Hold	Slow Green	Slow Red
Ringing	Fast Green	Fast Green
POT in Use	Slow Red	Slow Red
Transfer	Slow Green	Fast Green

VOLUME CONTROL

Volume levels for each of the three off-hook modes and the telephone ringer can be independently set. Once set, the volume for each mode will be saved until a new setting is entered.

Corded Handset: 4 levels

Speaker: 8 levels

Headset: 4 levels

Ringer: 4 levels

OFF-HOOK VOLUME

1 . To change the volume level for each mode, press VOLUME + or VOLUME – when in that mode.

2 . A tone will sound when the highest or lowest setting is reached.

NOTE:

■There is no tone when the highest speaker volume level is reached.

RINGER VOLUME

1. From the idle mode, press VOLUME + or VOLUME – until the desired ringer level is heard.

TELEPHONE OPERATION

MAKING TELEPHONE CALLS

Incoming and outgoing calls can be made using the handset, headset or speakerphone modes. Switch between off-hook modes as follows:

Handset to headset – press HEADSET.

Handset to speakerphone – press SPEAKER.

Headset to handset – lift the handset.

Headset to speakerphone – press SPEAKER.

Speakerphone to handset – lift the handset.

Speakerphone to headset – press HEADSET.

PRIME LINE

When a line is set as the PRIME LINE, the 420 will attempt to seize this line when the phone is taken off-hook. If the PRIME LINE is not available when the phone goes off hook, the next available line will be selected. If all lines are in use, an error tone will be heard and no line will be seized.

The PRIME LINE selection can be overridden simply by pressing the LINE SELECT button. If the line selected is free, the speakerphone will be automatically activated. If the line is in use, the line will not be seized.

RECEIVING TELEPHONE CALLS

A call can be manually answered by pressing the LINE SELECT button for the ringing line. The speakerphone will turn ON and the call will be answered.

If the phone is ringing and is taken off-hook, the ringing line will be answered. If more than one line is ringing, the line that was ringing first will be answered.

If the phone is ringing and you do NOT wish to answer the call but wish to make an outgoing call, press the LINE SELECT button of a non-ringing line.

RECEIVING CALL WAITING CALLS

If you subscribe to Call Waiting and a call is received on a line in use for another call, you will hear a beep to indicate the presence of a Call Waiting call. If you subscribe to Call Waiting Caller ID, the Caller ID information will appear on the display.

To answer the call waiting call, either press FLASH or enter the CENTREX call waiting command (for example ❋99) on the desk station. To simplify CENTREX operation, you can program the command into one of the feature keys. Refer to your CENTREX manual for the correct command sequence.

TELEPHONE

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