[asterisk-users] Call waiting tone when calling a busy station?

[Yehavi Bourvine +972-8-9489444]

>     this is a SIP phone configuration issue.
>
> You should tell the UAC to not accept a second call while the line is
> engaged (look for a 'Call Waiting' option in the configuration of the UAC)
> The UAC will send back a 486 "Busy Here" error code and the calling
> party will get a busy signal  from asterisk

This is not what I meant. I want the called party to get a sign of a waiting
call and answer it if he/she wants. I want the caller to know that he on a
waiting call (here it is customary to play a stuttered "ring" tone).

in short - can I signal in the "183 ringing" packet that this is a second call?

                                                      Thanks! __Yehavi: