Appendix
399
draft-anil-sipping-bla-02.txt—Implementing Bridged Line Appearances (BLA) Using
Session Initiation Protocol (SIP)
draft-ietf-sip-privacy-04.txt—SIP Extensions for Network-Asserted Caller Identity
and Privacy within Trusted Networks
draft-ietf-sipping-cc-conferencing-03.txt—SIP Call Control - Conferencing for User
Agents
To find the applicable Request for Comments (RFC) document, go to
http://www.ietf.org/rfc.html
and enter the RFC number.
The following SIP request messages are supported:
Method
Supported
Notes
REGISTER
Yes
INVITE
Yes
Yealink SIP-T4X IP phones
support mid-call changes
such as putting a call on
hold as signaled by a new
INVITE that contains an
existing Call-ID.
ACK
Yes
CANCEL
Yes
BYE
Yes
OPTIONS
Yes
SUBSCRIBE
Yes
NOTIFY
Yes
REFER
Yes
PRACK
Yes
INFO
Yes
MESSAGE
Yes
UPDATE
Yes
PUBLISH
Yes
Summary of Contents for SIP-T4X
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