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RFC 6910

"Completion of Calls for the Session Initiation Protocol (SIP)", April 2013

Canonical URL:
http://www.rfc-editor.org/rfc/rfc6910.txt
This document is also available in this non-normative format: PDF.
Status:
PROPOSED STANDARD
Authors:
D. Worley
M. Huelsemann
R. Jesske
D. Alexeitsev
Stream:
IETF
Source:
bliss (rai)

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Abstract

The "completion of calls" feature defined in this specification allows the caller of a failed call to be notified when the callee becomes available to receive a call. For the realization of a basic solution without queuing, this document references the usage of the dialog event package (RFC 4235) that is described as 'Automatic Redial' in "Session Initiation Protocol Service Examples" (RFC 5359). For the realization of a more comprehensive solution with queuing, this document introduces an architecture for implementing these features in the Session Initiation Protocol where "completion of calls" implementations associated with the caller's and callee's endpoints cooperate to place the caller's request for completion of calls into a queue at the callee's endpoint; when a caller's request is ready to be serviced, re-attempt of the original, failed call is then made. The architecture is designed to interoperate well with existing completion of calls solutions in other networks.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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