Hi,
Consider a regular OpenSER + Asterisk solution: OpenSER is the proxy/registrar, Asterisk hosts voicemail and conference, talks to PSTN terminations, etc. NAT traversal is assisted by either rtpproxy or mediaproxy.
In such a setup, can OpenSER be configured for barge-in? (If yes, how?) Or, what do you think is the best way to approach this problem?
Thanks, Sajith.