Call waiting (network service)
You can answer a call while you have another call in 
progress if you have activated 
Call waiting
in
Tools
>
Settings
>
Call
>
Call waiting
.
Tip! To change the device tones for different
environments and events, for example, when you want 
your device to be silent, see ‘Profiles—set tones’, p. 91.
To answer the waiting call, press
. The first call is put
on hold.
To switch between the two calls, select
Swap
. To connect
an incoming call or a call on hold with an active call and 
to disconnect yourself from the calls, select 
Options
>
Transfer
. To end the active call, press
or close the
sliding keypad; the first call is still active. To end both 
calls, select 
Options
>
End all calls
.