Hi !!!
I has requested the help of you for some time so that asterisk, when receiving a call through from pstn, have a delay of at least 4 rings, before asterisk answers this call.
I have not still had answer, it is possible that they can help me, it is urgent.
Thank you
Best Regards
Julio Gamas
This is the only message in this thread, so it looks like this is the first request.
You can find references to the online copy of Asterisk The Future of Telephony in many recent threads.
You could also ask on the jobs forum to see if anyone is interested in giving you paid for support.
Note there is no way of Asterisk knowing how many cycles of ringback tone the network has generated.