Sip Info Audio/Telephone-Event

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SDP - telephone-event - Microsoft Tech Community

https://techcommunity.microsoft.com/t5/skype-for-business-it-pro/sdp-telephone-event/td-p/376146

I have a SIP Trunk, where I receive an INVITE with SDP info like this ... v=0 o=BroadWorks 189068020 1 IN IP4 192.168.0.100 s=- c=IN IP4 192.168.0.100 t=0

Signaled Telephony Events in the Session Initiation ...

https://www.softarmor.com/wgdb/docs/draft-mahy-sipping-signaled-digits-01.html

This document proposes that the protocol translator send the audio/telephone-event MIME type defined in RFC2833 in the body of an INFO [5] method to the target User Agent, for it to render. The INFO method means: here is some information relevant to the call.

SIP Protocol: What Is & How It Works in a VOIP Call ...

https://www.softwareadvice.com/resources/what-is-sip/

SIP simply initiates and terminates an IP communication session, which could be a voice call between two people or a video conference between a team. It sets up the session by sending messages—in the form of data packets—between two or more identified IP endpoints, also known as SIP addresses.

rfc2976 - Internet Engineering Task Force

https://tools.ietf.org/html/rfc2976

The SIP INFO Method (RFC ) RFC 2976 SIP INFO Method October 2000 If a server receives an INFO request with a body it understands, but it has no knowledge of INFO associated processing rules for the body, the body MAY be rendered and displayed to the user. The INFO is responded to with a 200 OK. If the INFO request contains a body that the server does not understand then, in …

RFC 4733 - RTP Payload for DTMF Digits, Telephony Tones ...

https://tools.ietf.org/html/rfc4733

Introduction The RTP payload format for named telephone events is designated as "telephone-event", the media type as "audio/telephone-event". In accordance with current practice, this payload format does not have a static payload type number, but uses an RTP payload type number established dynamically and out-of-band.

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