-Device – select buzzer or vibrator

-Volume – set ringer volume

System

-Subscription – (system administrator use only)

-IPEI – (system administrator use only)

Telephone Options

-Auto Key Lock – activates the key lock functionality automatically if you don’t press any key for over 1 minute while in idle state.

-Key Click – provides an audible click each time a key is pressed

-Alarm – sets a reminder alarm

-SOS key – dials an emergency number

-Auto Answer – automatically answers calls without ringing (for use with headset)

-Silent Charging – disengages the handset from the system while charging

-Coverage Warning – provides four short beeps if your signal is weak

-User Name – allows you to program your name into the handset display (maximum of 16 characters)

-Language – sets the language of the local menus

-Contrast – allows you to set the display contrast

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Mitel OpenPhone 27 manual