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Process_sdp: Rejecting non-primary audio stream - Asterisk ...
https://community.asterisk.org/t/process-sdp-rejecting-non-primary-audio-stream/70258
From what I understand related bugs in other fora, this could be because the INVITE contains multiple audio streams. When asterisk receives the INVITE, it write this in the console: warning: WARNING[424]: chan_sip.c:8960 process_sdp: Rejecting non-primary audio stream: audio 19524 RTP/AVP 0 8 3 101. The SDP contents:
SDP Support - SBC Core 7.2.x Documentation - Ribbon ...
https://support.sonus.net/display/SBXDOC72/SDP+Support
The SBC maintains its default behavior if the non-core streams are video or other non-audio, non-image streams. Multiple m-line support must be enabled on both ingress and egress SIP Trunk Groups for the feature to apply. When the multipleAudioStreamsSupport option is disabled, the SBC default behavior takes place. For more information, refer to:
Fix several bugs with SDP parsing and well-formedness of ...
https://reviewboard.asterisk.org/r/1516/diff/2-3/
ast_log(LOG_WARNING, "Multiple audio streams are not supported\n"); 8849: res = -3; 8856: res = -3; 8850: goto process_sdp_cleanup; 8857: goto process_sdp_cleanup; 8851} 8858} 8852: audio = TRUE; 8859: audio = TRUE; 8853: p->offered_media[SDP_AUDIO].offered = ++numberofmediastreams; 8860: p->offered_media[SDP_AUDIO]. order_ offered = …
SDP Support - SBC Core 9.2.x Documentation - Ribbon ...
https://support.sonus.net/display/SBXDOC92/SDP+Support
Multiple m-lines Support in SDP. The SBC can process multiple audio m-lines, or a combination of audio and image m-lines, from the SDP. The SBC uses multiple m-lines (media streams) in call recording scenarios or several fax transmission types.
The Session Description Protocol (SDP)-VoIP Part 1 - 3CX
https://www.3cx.com/blog/voip-howto/sdp-voip/
SDP does not stream or provide the media itself, and it is not intended to support negotiation processes of streaming sessions or type of encodings used. It is intended to be of general purpose so it can be used in a range of network environments and different applications, and to use different transport protocols as appropriate, such as SIP and HTTP.
The Session Description Protocol (SDP) - 3CX
https://www.3cx.com/blog/voip-howto/sdp-voip2/
When a SIP based VoIP call is established, the audio or video sent between two SIP entities or more is streamed. Since many different codecs are supported by different devices or software, and each individual SIP entity taking part in the call does not know the IP address of the other SIP entity or to which port the stream should be sent to, SDP is used to advertise such …
Multiple Packetization Times in the Session Description ...
https://tools.ietf.org/id/draft-garcia-mmusic-multiple-ptimes-problem-03.html
1. Introduction "Session Description Protocol" (SDP) (Handley, M., Jacobson, V., and C. Perkins, “SDP: Session Description Protocol,” July 2006.) [RFC4566] provides a protocol to describe multimedia sessions for the purposes of session announcement, session invitation, and other forms of multimedia session initiation. A session description in SDP includes the session …
Guidelines for using the Multiplexing Features of RTP to ...
https://tools.ietf.org/id/draft-ietf-avtcore-multiplex-guidelines-04.html
The Real-time Transport Protocol (RTP) is a flexible protocol that can be used in a wide range of applications, networks, and system topologies. That flexibility makes for wide applicability, but can complicate the application design process. One particular design question that has received much attention is how to support multiple media streams in RTP.
RFC 3264 - An Offer/Answer Model with Session Description ...
https://tools.ietf.org/html/rfc3264
RFC 3264 An Offer/Answer Model Session Description Protocol June 2002 type, it is a matter of local policy as to how each stream is mapped to the various media sinks for that particular type (for example, speakers or a recording device in the case of audio). There are a few constraints on the policies, however. First, when receiving multiple streams of the same type, each stream …
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