I have to find out further information about call setup and control when using a tcl script to play customized ring backs.
When I use a tcl script (application - service) on a voice gateway, and I call the getway, at which time is the script active and
takes control in the ISDN q931 / H323 stack ?
1) at the Q931 Call Alerting ?
2) or after creating a logical h.245 channel ? because the audio have to be streamed to the caller ?
Can I debug this ? How can I see when the script / audio for ringback goes active ?
thx a lot