SIP (Session Initiation Protocol, RFC [2]) is a text-based application in the SIP specification (RFC ) to locate the proper resource in the network. RFC Client-Initiated Connections in SIP October the Trust Legal .. flow, instead of resolving the Contact URI using the procedures in [RFC] and . Canonical URL: ; File formats: Plain Text PDF Discuss this RFC: Send questions or comments to [email protected]

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In this case, Uniform Resource Names are used to identify a service e. Session Initiation Protocol v1. If these extensions are not listed in the client’s message, the response from the server will be an error response. In the IMS, the initial session parameter negotiation can be done by using the provisional responses and session description updating extensions, along with SDP in the body of the messages. This mechanism is necessary since SIP can run not only over reliable transport protocols TCP that assure that the message is delivered, but also over unreliable ones UDP that offer no delivery guarantees, and it is even possible that both kinds of protocols are present in different parts of the transport network.

Oracle Communications Converged Application Server supports cryptographic services, but specific algorithms that are used are subject to local availability and export control.

SIP extensions for the IP Multimedia Subsystem – Wikipedia

In basic SIP, this exchange eventually causes the callee to be alerted. There is a mechanism [36] to indicate that a SIP message is desired to be compressed.


In the IMS context, there are certain network 32663 i. Other useful information describing the “Quality” of the document: Numerous extensions exist and many more are proposed. There are several mechanisms to achieve this, such as:.

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All RFCs always remain available on-line. Feedback Contact Us Accessibility. Retrieved November 29, The P-Preferred-Identity extension header is also defined, so that a user with several public identities is able to tell the proxy which public identity should be included in the P-Asserted-Identity header when the user is authenticated.

All this functionality is supported by ieetf special header fields.

RFC – Locating Session Initiation Protocol (SIP) Servers in a Dual-Stack IP Network

Oracle Communications Converged Application Server does not provide privacy support as described in sub-section 5. In this concept the caller states a set of constraints about the session i. 326, when privacy is requested, proxies must withhold asserted identity information outside the trusted domain by removing P-Asserted-Identity headers before forwarding user requests to untrusted identities outside the Trust Domain.

This establishment will occur if and only if rfx the caller and the callee agree that the preconditions are met.

SIP extensions for the IP Multimedia Subsystem

The event notification framework defines how a user agent can subscribe to events about the state of a resource, but it does not specify how that state can be published. From Wikipedia, the free encyclopedia. The efficient use of network resources, which may include a radio interface or other low-bandwidth access, is essential in the IMS in order to provide the user with an acceptable experience in rtc of latency.


Each kind of event a subscriber can subscribe to iehf defined in a new event package. In the Rfcc every user agent is served by its P-CSCF, which is discovered by using the Dynamic Host Configuration Protocol or an equivalent mechanism when the user enters the IMS network, and all requests and responses from or to the user agent must traverse this proxy.

In SIP, the route header field, filled by the sender, supports this functionality by listing a set of proxies the message will visit. By using this site, you agree to the Terms of Use and Privacy Policy. Stream Control Transmission Protocol.

RFCs,,,,Errata Exist. They were designed specifically to meet efc 3GPP requirements because a more general solution was not available. The state publication framework defines a new method: The private extensions for asserted identity within trusted networks [23] are designed to enable a network of trusted SIP servers to assert the identity of authenticated users, only within an administrative domain with previously agreed policies for generation, transport and usage of this 2363 information.

However, as many words are repeated in different messages, the extended ketf for SigComp [34] define a way to use a shared dictionary among subsequent messages. This should not be presumed to mean that the product is not compliant with subsequent versions of component specifications, although this document does not summarize compliance with those specifications.