Remote phone control protocol for SIP phones

I am looking for details on how the Cisco SIP phones allow for remote
call control (monitor, barge, etc.) when deployed in conjunction with
the call manager.
I understand that these phones use SIP (not CSTA), but I could not
find any further details on whether they follow the procedures in
remote-cc-05 or any other mechanism.
Note that I am looking for the interface from the PBX to the *phone*,
not from phone to application controller (which could be CSTA, JTAPI,
Reply to
Loading thread data ... Forums website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.