Enter the fully qualified domain names (FQDNs) of A/V Edge Servers on the Global Properties Edge Serverstab. This is required to complete configuration of the Mediation Server.

Install and activate Mediation Server (required only if you are deploying Basic Media Gateway). You must deploy one Mediation Server for each gateway. If you are implementing Private Branch Exchange (PBX) integration, you must also deploy a Mediation Server between your PBX and Office Communications Server 2007 R2.

Configure a certificate for Mediation Server (required regardless of whether the Mediation Server is stand alone or part of a Collocated Media Gateway).

Select listening IP address for Mediation Server.

Select A/V Authentication Service.

Create Location Profiles.

Select the default Location Profile.

Accept the default Media Port Range.

Specify the FQDN and mutual Transport Layer Security (TLS) listening port for the internal next hop.

Specify the IP address and Transmission Control Protocol (TCP) listening port for the gateway.

Start Mediation Server.

Define normalization rules for outbound calls.

Create Phone Usage Records.

Create voice Policies and assign appropriate Phone Usage Records to each policy.

Create outbound call Routes and assign appropriate Phone Usage Records to each route.

Specify matching number pattern for each route.

Specify gateway for each route.

Enable users for Enterprise Voice.

Enable users for PBX integration, if appropriate.

Assign voice Policies to users.

Configure per-user Location Profiles.

Configure Office Communications Server 2007 R2 pool for Enterprise Voice.

Configure Exchange UM server to integrate with Office Communications Server.

On the Exchange UM server, grant Office Communications Server permission to read Exchange UM Active Directory objects.

On the Office Communications Server Front End, run the Ocsumutil tool.