received through the phone network (outside calls) and internal calls (INT) received from other A600 handsets registered to the base.
1.Press the Menu soft key to display the main menu list.
2.Press up
or down
to scroll to HS Settings and then press the Select soft key.
3.Press down
to scroll to Ring Setup and then press the Select soft key.
4.Press the Select soft key to select INT Ring or press down
to select EXT Ring, and then press the Select soft key.
5.Press up
or down
to select Melody or Volume and then press the Select soft key. You can select the ring tone from Melody
6.Press the Save soft key to confirm.
7.Press the Back soft key to return to the previous menu and select INT Ring or Ext Ring to repeat the process.
NOTE: If you set the volume to “Off”, when a call comes in, only the New Call information appears on the LCD and the phone will not ring.
NOTE: You can also adjust the ringer volume while you are
receiving an incoming call. Press up
or down
to increase or decrease the volume while the phone is ringing.
Visual and Vibrating Ringer
You can activate the visual ringer and vibrating handset function. A bright LED light will flash and the handset will vibrate when the phone rings. To turn this feature on/off:
1.In standby mode, press and hold 
until the 
icon
appears to activate and press and hold 
again to deactivate.