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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Update to the SIP preconditions framework. SIP torture test messages.
All these offsets are relative to the start time, they are not cumulative. The SIP Refer method. Multiple dialog usages in SIP. The early session disposition type for the SIP. A session is described by a series of fields, one per line. SIP extension for instant messaging. Integration of resource management and SIP. For example, if a daylight adjustment will subtract 1 hour on 31 October at 03am UTC i. Implementations are allowed to relax this to omit the carriage return and supply only the line feed.
This page was last edited on 7 Octoberat A presence event package for the SIP. For example, to schedule the same event also on Saturday at the same time of the day you would use:.
An offer and answer model with SDP. Basic network media services with SIP.
SIP industry standards compliance
Webarchive template wayback links Articles with short description All articles with unsourced statements Articles with unsourced statements from August Pages using RFC magic links. New attributes are added to the standard occasionally through registration with IANA. Browse all SIP topics. From Wikipedia, the free encyclopedia. Best current practices for third-party call control 3pcc in the SIP. A SIP event package for registrations. A SIP event package and data format for various settings in support for the push-to-talk over cellular PoC service.
RFC – An Offer/Answer Model with Session Description Protocol (SDP)
Recipients of this session description are instructed to only receive media. The set of properties and parameters are often called a session profile.
If the stop time is 0 then the session is “unbounded. SDP does not deliver any media by itself but is used between endpoints for negotiation of media type, format, and all associated properties. However, support for RFC comes with the following limitations: Instead of specifying this timezone and having to support a database of timezones for knowing when and where daylight adjustments will be needed, the repeat times are assumed to be all 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.
RTCP ports for the audio and video streams of andrespectively, are implied. This session is originated by the user ‘jdoe’, at IPv4 address A framework for conferencing with the SIP.
Thus an hour meeting from 10am UTC on 1 Augustwith a single repeat time a week later at rfx same time can be represented as:.
Session Description Protocol – Wikipedia
Intervals can be represented with Network Time Protocol times or in typed time: 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 the start time and the stop time which are still specified in NTP format in an absolute UTC timezone.
SIP Extension for event state publication.
The SIP Replace header. Setting up SIP application composition. A mechanism for content indirection in SIP messages. The SIP Join header. SIP Extension Header field for service route discovery during registration.
SIP basic call flow examples. Reliability of provisional responses in SIP. 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 If the weekly 1-hour session was repeated every Sunday for full rdc year, i.
The first one is used in the Session or Media sections to specify another character encoding as registered in the IANA registry  than the default one highly recommended UTF-8 where it is used in standard protocol keys whose values are containing a text intended to be displayed to a user.
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. SDP is designed to be extensible to support new media types and formats.
SIP Extension Header field for registering non-adjacent contacts.