Configuring Vcs To Use The Cisco Telepresence Advanced Media Gateway; Configuring The Vcs; Usage Features And Limitations - Cisco TelePresence Administrator's Manual

Configuring VCS to use the Cisco TelePresence
Advanced Media Gateway
The Advanced Media Gateway configuration
Configuration) is used to configure how a VCS routes calls to or from a Microsoft Office Communications
Server (OCS) zone via the Cisco TelePresence Advanced Media Gateway (Cisco AM GW).
The Cisco AM GW provides support for transcoding between standard codecs (such as H.264) and Microsoft
RT Video to allow high definition calls between Microsoft Office Communicator (MOC) clients and Cisco
endpoints.
Note: from VCS software version X7 you are recommended to use the
SIP calls between the VCS and a Microsoft OCS/Lync Server.

Configuring the VCS

For a VCS to use the Cisco AM GW you must first configure at least two zones:
An OCS zone (a zone with a Zone profile set to Microsoft Office Communications Server 2007).
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A Cisco AM GW zone (a zone with a Zone profile set to Cisco Advanced Media Gateway). Note that a
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Cisco AM GW zone can be configured with up to six Cisco AM GW peers for load balancing purposes.
Also note that Cisco AM GW zones do not require any associated search rules.
To start using the Cisco AM GW to transcode calls:
1. Go to the Advanced Media Gateway configuration
2. Click on the Advanced Media Gateway zone drop-down and choose the required Cisco AM GW zone.
Note that only zones configured with a Zone profile of Cisco Advanced Media Gateway appear in this list.
After a zone is selected, calls to or from the OCS are routed via the Cisco AM GWs connected to that
zone.
By default, all OCS calls are routed via the Cisco AM GW.
If you want to control which calls go through the Cisco AM GW you have to set up policy rules. To do this, set
Policy mode to On and then go to the

Usage features and limitations

If the Cisco AM GW reaches its capacity, any calls that would normally route via the Cisco AM GW will not
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fail; the call will still connect as usual but will not be transcoded.
The OCS zone must be inside any firewall; the endpoint receiving or making the call can be outside the
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firewall.
The VCS shows calls routed via the Cisco AM GW as two calls: one from the endpoint via the VCS to the
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Cisco AM GW which will be a local or traversal call as appropriate, and then a separate call back from the
Cisco AM GW via the VCS to the OCS which will always be a local call.
Bandwidth controls can be applied to the leg of the call between the endpoint and the Cisco AM GW zone,
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but cannot be applied to the Cisco AM GW zone to OCS zone leg of the call.
Cisco VCS Administrator Guide (X7.1)
page (VCS configuration > Advanced Media Gateway >
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Advanced Media Gateway policy rules
Dial plan and call processing
Microsoft OCS/Lync B2BUA
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