Operation Manual

Table Of Contents
Audible Adjustments
BusinessPhone Cordless DT400/DT410/DT420/DT43084
Trembler
The trembler is a vibration alarm and can be ordered as a factory
featured option to your Cordless.
If your Cordless is equipped with a trembler, you can set the
vibration alarm instead of the ringing signal to indicate incoming
calls and messages:
O
Press to enter the menu
fO
Select 3 Alerting and press
fO
Select 4 Trembler and press
fO
Scroll to choose between Yes and No and press
C
Press to exit the menu
A call will now be indicated by both the trembler and the audio
signal. If you want only the trembler to indicate calls, you have to
mute the ringing signal first.