For example, the service provider forwards an incoming call for a user who has activated call forwarding and registered a forwarding number, or the user calls the busy service when the call is set up and the call ends.
For example, the service provider forwards an incoming call for a user who activates call forwarding and registers the forwarding number, or the user calls the busy service call end when the state is busy during call establishment.<br>
For example, the service provider forwards an incoming call for a user who activates call forwarding and registers the forwarding number, or the user calls the busy service call to end when the state is busy during call establishment.