A new Request for Comments is now available in online RFC libraries. RFC 6910 Title: Completion of Calls for the Session Initiation Protocol (SIP) Author: D. Worley, M. Huelsemann, R. Jesske, D. Alexeitsev Status: Standards Track Stream: IETF Date: April 2013 Mailbox: worley@ariadne.com, martin.huelsemann@telekom.de, r.jesske@telekom.de, alexeitsev@teleflash.com Pages: 37 Characters: 86166 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-bliss-call-completion-19.txt URL: http://www.rfc-editor.org/rfc/rfc6910.txt 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. This document is a product of the Basic Level of Interoperability for SIP Services Working Group of the IETF. This is now a Proposed Standard. STANDARDS TRACK: This document specifies an Internet standards track protocol for the Internet community,and requests discussion and suggestions for improvements. Please refer to the current edition of the Internet Official Protocol Standards (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see http://www.ietf.org/mailman/listinfo/ietf-announce http://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see http://www.rfc-editor.org/rfcsearch.html. For downloading RFCs, see http://www.rfc-editor.org/rfc.html. Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC