Routing Calls Via The Cisco Am Gw; Vcs And The Cisco Am Gw; Configuring The Vcs To Use The Cisco Am Gw; Usage Features And Limitations - Cisco TelePresence Administrator's Manual

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Routing calls via the Cisco AM GW

Overview
The Cisco TelePresence Advanced Media Gateway (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.

Configuring the VCS to use the Cisco AM GW

A VCS Control can be configured to route calls to or from a Microsoft Office Communications Server
(OCS) zone via the Cisco AM GW.
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).
•
A Cisco AM GW zone (a zone with a Zone profile set to TANDBERG Advanced Media Gateway).
Note that a Cisco AM GW zone can be configured with up to six Cisco AM GW peers for load
balancing purposes. Also, 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 page (VCS configuration > Advanced Media
Gateway > Configuration).
2. Choose the required Cisco AM GW zone from the Advanced Media Gateway zone drop-down.
Note that only zones configured with a Zone profile of TANDBERG 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 but 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 follow the related task link to Configure Advanced Media Gateway
policy rules.
To configure the required Cisco AM GW zone using the CLI:
xConfiguration Services AdvancedMediaGateway Zone Name
•
For more information on configuring VCS and OCS, refer to the
R2) and VCS Control Deployment Guide
Overview and System
Introduction
status configuration
D14049.08
November 2010

VCS and the Cisco AM GW

Microsoft OCS 2007 (R1 and
[24].
Cisco VCS Zones and Clustering and
configuration neighbors

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 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 firewall.
•
The VCS shows calls routed via the Cisco AM GW as two calls: one from the endpoint via the VCS
to the 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, but cannot be applied to the Cisco AM GW zone to OCS zone leg of the call.

Controlling which calls to route via the Cisco AM GW

By default, when an Advanced Media Gateway zone has been selected, 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:
1. Go to the Advanced Media Gateway configuration page (VCS configuration > Advanced Media
Gateway > Configuration).
2. Set Policy mode to On and click Save.
3. You now need to configure your policy
Either follow the related task link to Configure Advanced Media Gateway policy rules or go to
VCS configuration > Advanced Media Gateway > Policy rules.
To enable Cisco AM GW policy using the CLI:
xConfiguration Services AdvancedMediaGateway Policy Mode
•
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