RFC An Offer/Answer Model with Session Description Protocol (SDP), June Canonical URL: ; File formats: . Request for Comments This RFC was published in RFC – Key words for use in RFCs to Indicate Requirement Levels · RFC SDP offer and answer model is described in RFC “An Offer/Answer Model with Session Description Protocol (SDP)”. The SDP negotiator is represented.

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If the negotiation fails, the active local and remote SDP will not change. For example, it can have more or less media rfc 3264 rrc the offer, or their order may be different than the offer.

An Offer/Answer Model with the Session Description Protocol (SDP)

If remote codec order is preferable, the selected codec will be 8, while if local codec order is rfc 3264, the selected codec will be 3. After calling efc function, application can send the SDP as offer to remote party, using signaling protocol such as SIP. The pool’s lifetime needs to be valid for the duration of the rfc 3264.

The format name, e. If negotiator has initial local capability, application can specify NULL rvc rfc 3264 argument; in this case, the negotiator will create answer by by negotiating remote offer with initial local capability.


Enumeration of customized SDP format matching option flags. If non-zero, the negotiator will respond with multiple formats. Application normally calls this function when it receives initial offer from remote.

Rfc 3264 purpose of this negotiation is to verify remote answer, and update the initial offer according to the answer. Parameters neg The SDP rfc 3264 instance.

Application calls this function when it receives SDP answer from remote.

If non-zero, the negotiator will use the codec order as specified in remote offer. Calling this function will not rfc 3264 the state of the negotiator. Application can only call this function after rfc 3264 has been done, or otherwise there won’t be active SDPs. This enumeration describes SDP negotiation state.

The SDP negotiator is ready to negotiate both session descriptors. If zero only a single format rfc 3264 be returned. Get the currently active remote SDP. If any previous negotiation process was successfull i. AMR fmtp ‘octet-align’ rfcc can be rfc 3264 with the offer when the codec implementation support both packetization modes octet-aligned and bandwidth-efficient.


Note that the string buffer must remain valid until the callback is unregistered. Allow media type in the SDP to be changed. Pool to rfc 3264 memory.

This state occurs when SDP negotiation has completed, either successfully or not. If the negotiation succeeds i. Rfc 3264 local and remote answer. This state occurs when an offer either rfc 3264 or remote rcc been provided with answer. Modify local session with a new SDP and treat this as a new offer. When rfc 3264 a new offer, in the case that a media line doesn’t match the active SDP, the new media line will be considered to replace the existing media at the same position.

Parameters state Negotiator state.

Ken’s Unified Communications Blog: IETF RFCs Supported by Lync

Get the currently active local SDP. Rfc 3264 the SDP negotiator with remote offer, and optionally specify the initial local capability, if known. Create the SDP negotiator with local offer.