This
helps to provide a solution for interfacing your OCS environment with your legacy PBX system
that doesn??™t require another server to be deployed.
As you begin to think about deploying Enterprise Voice solutions with OCS, you need
to consider the type of gateway you??™ll be using, the number of gateways required, what
confi guration will be required for the gateways, and where you should place the gateways.
Although the gateway deployment options you have may be vast, the option you choose
can increase the required investment of your voice solution.
You can go with a distributed gateway solution, a data center deployment, or a hybrid
distributed/data center deployment. Your answers to the following questions can help you
to make the correct choice:
?– How many locations do you have to support?
?– What is the estimated traffi c at each location?
In a distributed environment, such as that shown in Figure 6.1, you would place gateways
in the outlying offi ces. Calls between users at each offi ce and between the offi ces are routed
over the company??™s intranet. Calls made to people outside the company will be routed over
Configuring the Mediation Server ??? Chapter 6 177
the gateway that is closest to the location of the destination number. This confi guration may
be complex depending on the number of offi ces you have to support. In this situation, it
might be best to have a few strategically located data centers.
Figure 6.1 A Distributed Topology
In a data center confi guration such as that shown in Figure 6.
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