The IESG has approved the following document:
- 'Best Current Practices for Third Party Call Control in the Session
Initiation Protocol '
<draft-ietf-sipping-3pcc-06.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.
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.
