Finally, if you want to use Enterprise Voice
you??™ll need to install one of the following three options. Your fi rst option is to install the
Mediation Server and a basic media gateway. Your second option is the basic-hybrid media
gateway where the Mediation Server is colocated with the basic media gateway. Your third
option is the advanced media gateway, where the Mediation server logic is incorporated into
the gateway design (not yet available at the time of this writing), and the A/V Edge Server
(where the A/V authentication service is colocated).
Once you??™ve decided what features of OCS you want to install, your next step is to
evaluate your organization??™s requirements. The four main points you need to address regarding
your organization??™s requirements are:
?– How important is high availability to your organization?
?– Where are the various components of your organization located?
?– Do you plan to support external user access?
?– Do you plan to deploy Enterprise Voice?
Let??™s look at the availability question fi rst. Is high availability a requirement for your
organization? Only you can make this call. Is this component of your business going to be
mission-critical? If clients and customers are going to be using it, your answer should be ???yes.???
If internal training is using it, you must decide how important internal training is. No book or
high-priced consultant is going to answer this for you. This is your decision. If you need high
availability, the Enterprise pool is appropriate.
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