Accessories

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Line 2

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Line 2

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Line 2

#

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Option unit (optional)

(Dialog 4222 Office phone only).

The option unit DBY 420 01/1 is an optional accessory to be installed under your telephone set. The unit is used to connect either an extra bell outside your room, or a busy signal lamp outside your door.

To check or set the option unit for extra bell or for busy signal

Press and hold simultaneously until a ring signal is heard. The display shows OPTION PROGRAMMING and the Line 2 key lamp indicates the setting of the option unit:

Off=Extra bell, On=Busy signal lamp. Flashing=Combined extra bell & busy lamp.

Press to change to busy signal, or

press to change to extra bell & busy signal, or

press to change to extra bell. Press to save the setting and exit.

Note: If you do not press #, the phone automatically returns to idle about 30 seconds after the last key press.

Dialog 4220 Lite/Dialog 4222 Office

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Image 87
Ericsson 4220 manual Option unit optional