Best Current Practices for Third Party Call Control (3pcc) in the Session Initiation Protocol (SIP)
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From: The IESG <firstname.lastname@example.org> To: IETF-Announce <email@example.com> Cc: Internet Architecture Board <firstname.lastname@example.org>, RFC Editor <email@example.com>, sipping mailing list <firstname.lastname@example.org>, sipping chair <email@example.com> Subject: Protocol Action: 'Best Current Practices for Third Party Call Control in the Session Initiation Protocol' to BCP The IESG has approved the following document: - 'Best Current Practices for Third Party Call Control in the Session Initiation Protocol ' <draft-ietf-sipping-3pcc-07.txt> as a BCP This document is the product of the Session Initiation Proposal Investigation Working Group. The IESG contact persons are Allison Mankin and Jon Peterson. A URL of this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-sipping-3pcc-07.txt
Technical Summary Third party call control refers to the ability of one entity to create a call in which communications is actually between other parties. Third party call control is possible using the mechanisms specified within the Session Initiation Protocol (SIP). However, there are several possible approaches, each with different benefits and drawbacks. This document discusses best current practices for the usage of SIP for third party call control. Security and identity are important issues in third party call control. The document provides recommendations for the controller to use a credentialled identity. It also provides recommendations to aid the two endpoints in the third party controlled call in gaining end-to-end secured media. Working Group Summary There was strong working group consensus to advance this document it has a significant pull from the community, including 3GPP. There were no issues raised during IETF Last Call. Protocol Quality The document was reviewed for the IESG by Eric Rescorla and Allison Mankin. Further IESG review included a community poll regarding the use of 0.0.0.0, which is divergent from other Internet usage, but was determined to be required due to SDP limitations.