BenQ S700 - Manual (Page 183)

Menus 167
In each of the above options you will also need to enter the
phone number to divert to.
Divert When Busy
This option will transfer incoming calls if your phone is busy.
Settings are the same as for
Divert All calls .
Divert On No Answer
This option will transfer incoming calls if you do not answer
the call. Settings are the same as for
Divert All calls .
Divert When Unfound
This option will transfer incoming calls when your phone is off
or roaming in an area beyond the coverage range of your
network. Settings are the same as for
Divert All calls .
Cancel All
This option will enable you to cancel the diversion of incoming
calls.
Call Waiting
If there is an incoming call when you are in the middle of another
call, the screen will display the number of the incoming call and call
waiting message to alert you. You can activate, cancel, or view the
status of this feature from this menu.
You must apply to the network operator for the call waiting
service in order to use this feature.