I would like to know whether Answer Supervision is supported by Asterisk 1.2.3 or additional hardware device is required to detect remote party has pick up the call.
In fact, Disconnect Supervision is working fine where i just uncomment some settings in zapata.conf:
However, the answer supervision does not seems to work. Setting in zaptata.conf:
I went through a lot of website, the answer and disconnection supervision are depends on the polarity reversal stuff. I believe Asterisk has this capability as it work ok for the Disconnect Supervision, but not Answer Supervision. Would appreciate it if someone could assist me in this problem. Thanks