The IESG has approved the Internet-Draft 'Private Extensions to the Session Initiation Protocol (SIP) for the 3rd-Generation Partnership Project (3GPP)' <draft-garcia-sipping-3gpp-p-headers-02.txt> as an Informational RFC. This has been reviewed in the IETF but is not the product of an IETF Working Group. The IESG contact persons are Allison Mankin and Scott Bradner.
