Configuring a Route to CallManager via the Mediation Server
Now we need to confi gure OCS to be able to route outbound calls to CallManager. The
key to this step is to create a route in OCS. To do this, open the OCS administrative console.
Right-click on the Forest object and select Properties | Voice Properties. Click on the
Routes tab (see Figure 9.19).
302 Chapter 9 ??? Integration with PBX and IP-PBX Systems
In the Gateways section, click Add. Select your Mediation Server and click OK. Click
OK again to apply your settings. This will route all unknown calls from OCS to CallManager.
This is, of course, a simplistic route and you probably wouldn??™t want to use it in real life.
In our case, it does what we want it to by sending any calls over to CallManager that
don??™t match an OCS user??™s phone number.
Restart your OCS server??™s Front-End Services for the changes to the dial plan to take effect.
Testing and Call Flow
From an OCS client, type in the extension of an IP phone user and watch the number normalize
to +1 (312)555-4736. Click the phone icon to the right of the normalized number to make
Figure 9.20 Add Route
Integration with PBX and IP-PBX Systems ??? Chapter 9 303
the call. The call will be sent from your client to the Mediation Server. The Mediation Server
will then send the call to CallManager??™s SIP trunk. CallManager will strip off all the leading
digits, leaving just 4736, and will route the call to extension 4736.
Routing to the PSTN via CallManager
In the example we??™ve just walked through, CallManager can now route calls to OCS users
and OCS users can now route calls to CallManager users.
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