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CUVA brings video telephony functionality to all the Cisco Unified IP Phone Type B phone models
and the higher-end Type A models (7940 and 7960). The software is coupled with a USB camera that
allows a PC connected to a Cisco IP Phone to add video to telephone calls without requiring any
extra button pushing or mouse clicking. Versions of the Video Advantage software later than 2.0
allow any USB-based video device to be used with the CUVA software. A Cisco IP Phone enabled
with CUVA has the features and functionality of a full-featured IP video phone. Supplementary
services, such as call forward, transfer, hold, and mute, are available for video calls. CUVA is
intended for desktop-to-desktop IP video telephony environments, not as a general-purpose
videoconferencing solution for use in conference rooms.
490 Chapter 19: Cisco Unified Video Advantage
CUCM Release 4.0(1) with Service Release 2 or later is required to run CUVA.
CUVA software provides the user with an easy-to-use graphical interface, including these
options:
■ Camera On: Users can turn the camera on and off.
■ Video Check: Users can check their video before calls are placed or received.
■ Mute Video on Audio Mute: When users mute the audio on the IP phone, video is
automatically paused until the audio on the IP phone is restored.
■ Video Signal Indicators: The quality of the incoming and outgoing video is
graphically displayed.
■ Connectivity Indicator: Graphics are used to indicate the state of the connection from
the PC to its associated Cisco IP Phone or Cisco IP Communicator.
The CUVA software must be running on a computer connected directly to the PC access
port on the back of the Cisco IP Phone for the video client and phone to associate to each
other. The Cisco IP Phone registers its video capabilities with CUCM after it associates
with CUVA.
If a call is placed between two video-capable IP Phones, the call is transparently set up as
a video call where the audio channel is on the IP phone and the video channel is on the PC.
The mid-call feature allows the video stream to be brought up at any time during an audio
call as soon as CUVA is started on the PC. The association between the phone and computer
is illustrated in Figure 19-1.
Figure 19-1 Phone and CUVA Association
NOTE When you are using Cisco IP Communicator 2.0 or later and CUVA 2.0 or later,
CUVA can interact with Cisco IP Communicator and a Cisco IP Phone. CUVA and Cisco
IP Communicator have to run on the same PC in this case.
Voice
Video
Association
PC with Cisco
Unified Video
Advantage
Installed
PC with Cisco
Unified Video
Advantage
Installed
SCCP
Signaling
SCCP
IP Signaling IP Association
CUVA Communication Flows 491
CUVA supports three types of video codecs: H.263, H.264, and the Cisco wideband video
codec. The Cisco wideband video codec places the least demand on the PC because there
is little to no compression of the video stream. The uncompressed video stream will require
7 Mbps of bandwidth resources.
More CPU power is needed to run the H.263 and H.264 compressed video codecs, but they
require far less bandwidth resources on the network. Ensure that your PCs have enough
CPU and memory resources available before running the H.263 or H.264 video codecs. The
CUVA H.263 and H.264 codecs support a bandwidth range from 50 kbps to 1.5 Mbps.