I would be grateful if someone could tell me where to find the docs to get started on the following problem:<br><br>A program needs to be written to place a SIP call to a certain extension on another Asterisk system, and see whether the call state ratchets up to "ringing", then drop, and take action on the results.<br>
<br>Can anyone refer me to the appropriate starting point to read up on this? Thanks.<br><br><br>