Appendix
373
draft-ietf-bliss-shared-appearances-15.txt—Shared Appearances of a Session Initiation
Protocol (SIP) Address of Record (AOR)
To find the applicable Request for Comments (RFC) document, go to
http://www.ietf.org/rfc.html
and enter the RFC number.
SIP Request
The following SIP request messages are supported:
Yealink Skype for Business
phones support mid-call
changes such as placing a
call on hold as signaled by a
new INVITE that contains an
existing Call-ID.