Cisco Cisco TelePresence Video Communication Server Expressway
Introduction
The Unified Communications (UC) gateway for Lync is the combination of the “Lync gateway” Cisco
TelePresence Video Communication Server (VCS) and the Cisco TelePresence Advanced Media Gateway
(Cisco AM GW).
TelePresence Video Communication Server (VCS) and the Cisco TelePresence Advanced Media Gateway
(Cisco AM GW).
The addition of the Cisco AM GW to the “Lync gateway” VCS allows traditional video codecs such as H.261,
H.263 and H.264 to be converted to and from the Microsoft RT Video codec. Use of the RT Video codec
allows a Lync client to scale its displayed image from CIF resolution, through VGA to 720p.
H.263 and H.264 to be converted to and from the Microsoft RT Video codec. Use of the RT Video codec
allows a Lync client to scale its displayed image from CIF resolution, through VGA to 720p.
The Cisco AM GW enhances the video experience by upscaling the video format sent from Lync clients.
Upscaling only occurs if ClearVision is enabled on the Cisco AM GW (it is disabled by default).
Upscaling only occurs if ClearVision is enabled on the Cisco AM GW (it is disabled by default).
Resolution sent from Microsoft client
Upscaled resolution
CIF (352x288)
4CIF (704x576)
VGA (640x480)
XGA (1024x768)
HD (1280x720)
not applicable (remains 1280x720)
Use of the Unified Communications gateway is essential if Communicator for MAC clients is used – MAC
clients do not support any traditional video codecs; they only support RT Video, hence to have video
communications the Cisco AM GW is needed to transcode the video.
clients do not support any traditional video codecs; they only support RT Video, hence to have video
communications the Cisco AM GW is needed to transcode the video.
The deployment of the UC gateway should be as shown:
.
For small test and demo systems the “Lync gateway” VCS can be used as the main routing VCS in the video
network, though use of a standalone UC gateway is recommended – see the section ‘Why add a “Lync
gateway” VCS Control?’ in Microsoft Lync and VCS Deployment Guide.
network, though use of a standalone UC gateway is recommended – see the section ‘Why add a “Lync
gateway” VCS Control?’ in Microsoft Lync and VCS Deployment Guide.
This deployment guide describes how to add the Cisco AM GW to an existing “Lync gateway” VCS
deployment. For additional information about the Cisco AM GW see
deployment. For additional information about the Cisco AM GW see
For OCS or non-B2BUA deployments, see Microsoft OCS 2007, Lync 2010, VCS and Cisco AM GW
Deployment Guide.
Deployment Guide.
Cisco TelePresence Microsoft Lync 2010, Cisco VCS and Cisco AM GW Deployment Guide (X8.2)
Page 4 of 20
Introduction