This MIB module complements the CISCO-VOICE-DIAL-CONTROL-MIB,
which provides voice telephony peer information, by providing
management of video telephony peer information.  This MIB
module
enhances the IETF Dial Control MIB (RFC2128) by providing video
call information over an IP network.

A video call is different from an audio call in that a video
call typically consists of 2 call legs - audio and video - and
each call leg is represented by one call entry.  Therefore,
each video call creates 2 call entries.  In order to associate
the video and audio entries of the same video call, a call
reference ID is used, i.e., the video and audio entries of the
same video call have the same call reference ID.  

There are 4 tables (Common, Common Statistics, Conferee and
Call) in this MIB, where each table contains different
information depending on the
type of the video call: 
1. 'common' and 'common statistics' table entries are created
for all video calls; 
2. A 'conferee' table entry is created for calls that belong to
a video conference; conferee means a participant of a
conference; and  
3. A 'call' table entry is created for point-to-point video
calls. 
I.e., for a video conference call, there are valid information
in the 'common,' 'common statistics' and 'conferee' tables; for
a video point-to-point call, there are valid information in the
'common,' 'common statistics' and 'call' tables.  

Transmit(TX) and Receive(RX) Directions:
The video stream direction is defined with respect to the video
endpoint.  I.e., transmit(TX) refers to the video stream sent by
the endpoint and receive(RX) refers to the video stream received
by the endpoint.  

REFERENCE
[1] RFC 2128 Dial Control Management Information
Base using SMIv2.