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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To indicate so, they must insert the privacy token id into the Privacy header field. An important source of failure is the inability to reserve network resources to support the session, so these resources should be allocated before the phone rings. Moreover, event notification can be used to provide additional services such as voicemail i. Session Initiation Protocol v1.

This functionality can be implemented as part of the application. Diversion Indication in SIP. In this case, Uniform Resource Names are used to identify a service e. In the IMS it is possible for a user to have multiple terminals e. Relationship with other existing or emerging documents:. The Private Header Extensions to SIP, [6] also known as P-Headers, are special header fields whose applicability is limited to private networks with a certain topology and characteristics of lower layers ‘ protocols.

In the IMS framework it is fundamental to handle user identities for authentication, authorization and accounting purposes. This request will be answered by the provisional reliable response code Session Progressthat will carry the SDP list of supported codecs by both the caller and the callee. Feature development is prioritized according to general market trends, both observed and predicted.


Therefore, a mechanism is needed in order to route requests to the desired device or application. The REFER message also implies an event subscription to the result of the operation, so that the sender will know whether or not the recipient could contact the third person. This token will be obtained from its P-CSCF, which may be in charge of QoS policy control or have an interface with the policy control entity in the network i.

When a proxy server receives a request from an untrusted entity and authenticates the user i. The main functionality is supported by the P-Asserted-Identity extension header. However, in such an scenario as the IMS framework, it is necessary to extend this reliability to provisional responses to Rgc requests for session establishment, this is, to start a call.

Source routing is the mechanism that allows the sender of a message to specify partially or completely the route the message traverses. Retrieved November 29, RFCs,,,,Errata Exist. Current information, if any, about IPR issues: Oracle Communications Converged Application Server does enforce uniqueness.

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Any explicit references within that referenced document should also be listed: All RFCs always remain available on-line. In order to make an efficient use of the signaling messages, it is also possible to establish a limited notification rate not real-time notifications through a mechanism called event throttling.

They are commonly obtained during the registration process: Session Initiation Protocol 2. Oracle Communications Converged Application Server supports cryptographic services, but specific algorithms that are used are subject to local availability and export control.

In a first approach, this dictionary may be built for each message by the compressor and sent to the decompressor along with the message itself. The necessity in the IMS of reserving resources to provide quality of service QoS leads to another security issue: The new SDP attributes are meant to describe the current status of the resource reservation, the desired status of the reservation to proceed with session establishment, and the confirmation statusto indicate when the reservation status should be confirmed.


Justification for the specific reference: Other useful information describing the “Quality” of the document: Retrieved 3 December 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 terms of latency.

With the caller preferences extension, [8] the calling party is able to indicate the kind of user agent they want to reach e.

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Justification for the specific reference:. Views Read Edit View history. Clear description of the referenced document: RFC or Specification Number. Iettf Communications Converged Application Server supports applications that conform to this specification.

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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. Committed to connecting the world. Likewise, if frc server does not support any of the client’s required extensions, it will send an error response with a list of its unsupported extensions.