The Internet Assigned Number Authority (IANA) Uniform Resource Identifier (URI) Parameter Registry for the Session Initiation Protocol (SIP)
RFC 3969 also known as BCP 99

Recipient expansions

Mail trigger To Cc
doc_added_comment rfc3969@ietf.org, sip-chairs@ietf.org
doc_external_resource_change_requested mankin@isi.edu, sip-chairs@ietf.org
doc_state_edited mankin@isi.edu, rfc3969@ietf.org, sip-chairs@ietf.org
ipr_posted_on_doc rfc3969@ietf.org ipr-announce@ietf.org, sipcore@ietf.org