Hi, I am facing a problem where for legal obligations (LI) I have to copy/mirror/forward the RTP streams for some selected call to an external address/port and I have not found a way to do it with built-in functionality. Do I miss something?
The basic requirements are: * Raw RTP (no transcoding, header and payload as is) * Direction (did it arrive at asterisk or was it sent) * End indication once the call has been cleared I tried to use app_chanspy and ran into three different problems: - It is always transcoding - No support for input only on the audiohooks used by app_chanspy (send input, output to two different dest ports) - End of call only through hangup A post mentioned the framehooks but from what I see: - It is the audio payload but not the RTP header - I considered to rebuild the RTP header but: ast_rtp_instance can't give me the rx SSRC, rx SQNO,... Currently we are extending ast_rtp_instance to have a mirror_audio function pointer with dest ip/dest port and a custom protocol to send the rtp frames. And we have extended ast_channel_tech to add a start_mirror function pointer and have implemented it for chan_sip and chan_pjsip. They find the ast_rtp_instance and then call the mirror_audio method on it. Finally there is an AMI handler to initiate the mirroring for a given Call-Id on the right ast_channel. We would like to avoid modifying asterisk and wonder how we could move forward? Is there any hope to get our modifications included? Could there be a framehook for the rtp frame (with remote peer info)? Extend ast_rtp_instance to export more info about the RX info? Anything else? looking forward for feedback and hints holger -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- Check out the new Asterisk community forum at: https://community.asterisk.org/ New to Asterisk? Start here: https://wiki.asterisk.org/wiki/display/AST/Getting+Started asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users