Does Asterisk support a call which is RTT only or Video only?
- In case of a RTT only call (only RTT SDP was in the INVITE), Asterisk seem to respond back with a 404 Not Found.
- In case of a Video only call (only Video SDP was in the INVITE), Asterisk seem to send back an OK with Video only in the SDP, but the call never gets routed internally. Also, after 6 seconds of the sending the OK, Asterisk is sending back a BYE.
Is there a limitation in Asterisk that requires all calls to have Audio?