Canonical URL: ; File formats: Plain Text PDF Discuss this RFC: Send questions or comments to [email protected] The Session Description Protocol (SDP) is a format for describing streaming media communications parameters. The IETF published the original specification as an IETF Proposed Standard in April , and subsequently published a revised specification as an IETF Proposed Standard as RFC in July . “An Offer/Answer Model with the Session Description Protocol(RFC ). SIP Configuration Guide, Cisco IOS Release 15M&T-Achieving SIP RFC Compliance. (SDP), as defined in the IETF specification, RFC , An Offer/ Answer.

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SDP is designed to be extensible to support new media types and formats. Its name is “SDP Seminar” and extended session information “A Seminar on the session description protocol” is included along with a link for additional information and an email address to contact the responsible party, Jane Doe.

SIP industry standards compliance

Private SIP extensions for media authorization. Update to the SIP preconditions framework. Integration of resource management and SIP. Each message may contain multiple timing and media descriptions. All these offsets are relative to the start time, they are not cumulative. By using this site, you agree to the Terms of Use and Privacy Policy. A message summary and message waiting indication event package for the SIP.

A mechanism for content indirection in SIP messages. A session is described by a series of fields, one per line.

Session Description Protocol

SIP basic call flow rc. Instead of specifying this timezone and having to support a database of timezones for knowing when and where daylight adjustments will be needed, 32664 repeat times are assumed to be ietg defined within the same timezone, and SDP supports the indication of NTP absolute times when a daylight offset expressed in seconds or using a type time will need to be applied to the repeated start time or end time falling at or after each daylight adjustment.


An invite-initiated dialog event package for the SIP. Note also that sessions may be repeated irregularly over a week but scheduled the same way for all weeks in the period, by adding more tuples in the r parameter. Early media and ringing tone generation in the SIP. Values are typically a UTF-8 encoding. The set of properties and parameters are often called a session profile. A SIP event package and data format for various settings in support for the push-to-talk over cellular PoC service.

SIP torture test messages.

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

Compliance with standards for SIP applications. However, support for RFC comes with the following limitations: Webarchive template wayback links Articles with short description All articles with unsourced statements Articles with unsourced statements from August Pages using RFC magic links.

From Wikipedia, the free encyclopedia. ietv

ieff SDP does not deliver any media by itself but is used between endpoints for negotiation of media type, format, and all associated properties. Retrieved from ” https: If the weekly 1-hour session was repeated every Sunday for full one year, i. When repeat times are specified, the start time of each repetition may need to be adjusted so that it will occur at the same local time in a specific timezone throughout the period between rdc start time and the stop time which are still specified in NTP format in an absolute UTC timezone.


This session is specified to last for two hours using NTP timestamps, with a connection address which indicates the address clients must connect to or — when a multicast address is provided, as it is here — subscribe to specified as IPv4 For example, to schedule the same event also on Saturday at the same time of the day you would use:.

For example, if a daylight adjustment will subtract 1 hour on 31 October at 03am UTC i. If the stop time is 0 then the session is “unbounded.

Session Initiation Protocol (SIP) industry standards compliance

In both cases, each textual field in the protocol which are not interpreted symbolically by the protocol itself, will be interpreted as opaque strings, but rendered to the user or application with the values indicated in the last occurrence of the charset and sdplang in the current Media section, or otherwise their last value in the Session section.

SIP Extension for event state publication. A iftf information event template package for the SIP. Reliability of provisional responses in Itef.

Names are only unique within the associated syntactic construct, i. The fields present in their values are considered in the protocol as opaque strings, they are used as identifiers, just like paths in an URL or filenames in a file system: SIP extension for instant messaging. Setting up SIP application composition. Views Read Edit View history.

SDP uses attributes to extend the core protocol.