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UNDERSTANDING SIP TRACES - Cisco Community
https://community.cisco.com/t5/collaboration-voice-and-video/understanding-sip-traces/ta-p/3137704
m=audio 25268 RTP/AVP 18 0 8 101 . This line defines the media attribtes that will be used for the call. Audio: means that this is an Audio call, …
sip - SIPML5 lib adding a second m=audio parameter - …
https://stackoverflow.com/questions/68445800/sipml5-lib-adding-a-second-m-audio-parameter
We are developing a opensip client with SIPML5 lib ( https://www.doubango.org/sipml5/ ). Calls are working, but when we use the hold option the SDP is generated with an extra 'm=audio' parameter: recv=SIP/2.0 200 OK Via: SIP/2.0/WSS df7jal23ls0d.invalid;rport=42992;received=NOP;branch=NOP From: "SIPML5 …
Understanding Media In SIP Session Description Protocol ...
https://teraquant.com/understand-media-sip-session-description-protocol/
For example: 16-bit linear encoded stereo audio sampled at 16 kHz using dynamic RTP/AVP payload type 98 for this stream: m=audio 49232 …
SIP understanding debug and traces - DrVoIP
https://drvoip.com/support/knowledgebase.php?article=52
m=audio 25268 RTP/AVP 18 0 8 101 . This line defines the media attribtes that will be used for the call. Audio: means that this is an Audio call, we can also have m=video in case of a Video call. 25268: Is the dynamic RTP port used for the call. RTP/AVP: Represents the RTP/AVP profile number for each of the profiles listed.
SIP - Messaging
https://www.tutorialspoint.com/session_initiation_protocol/session_initiation_protocol_messaging.htm
v = 0 o = Alice 2890844526 2890844526 IN IP4 client.ANC.com s = Session SDP c = IN IP4 client.ANC.com t = 3034423619 0 m = audio 49170 RTP/AVP 0 a = rtpmap:0 PCMU/8000 BYE. BYE is the method used to terminate an established session. This is a SIP request that can be sent by either the caller or the callee to end a session.
[Sip] m= lines with multiple ports - IETF
https://www.ietf.org/mail-archive/web/sip/current/msg01367.html
Hi, More on the SIP media handling discussion. At the moment, I think most people agree that the number of m= lines in the request and response MUST match. Now, SDP allows the including of multiple ports (so called port pairs) in a single m= line, so the UAC may send: m=audio 2000/2 RTP/AVP 31 Now, there are a few scenarios: 1.
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