The information regarding a single VoIP call leg.
The call leg entry is identified by using the same index
objects that are used by call active table of DIAL-CONTROL-MIB
to identify the call.
An entry of this table is created when its associated call
active entry in the DIAL-CONTROL-MIB is created and the
call active entry contains information for the call
establishment to the peer on the IP backbone via a voice
over IP peer.
The entry is deleted when its associated call active entry
in the DIAL-CONTROL-MIB is deleted.