Which two options in VCS-C and VCS-E handle presence status for registered endpoints?
(Choose two.)
A.
presence proxy
B.
back to back user agent
C.
presence user agent
D.
domain name system
E.
presence server
Which two options in VCS-C and VCS-E handle presence status for registered endpoints?
Which two options in VCS-C and VCS-E handle presence status for registered endpoints?
(Choose two.)