Configuring UM IP Gateways & UM Hunt Groups

Configuring UM IP Gateways

You are required to create an IP gateway when you don't use OCS 2007 R2 in your environment and want to connect directly Exchange 2010 UM to your IP PBX or IP gateway. If you use OCS 2007 R2, the task of creating an IP gateway per OCS Pool will be done by the ExchUCUtil.ps1 script.

To create an UM IP gateway, you need the following information:

§  The name of the UM IP gateway

§  The IP address or FQDN of the IP gateway or IP PBX that you want to connect to

§  The UM dial plan the UM IP gateway will serve

To create a UM IP gateway, you can use the New-IPGateway cmdlet in the EMS or use the EMC as shown in Figure 1.

 

Figure 1: Creating a new UM IP gateway

Configuring UM Hunt Groups

For every UM IP gateway you also need at least one UM hunt group. To create a UM hunt group you need the following information:

§  Name of the UM hunt group

§  The pilot identifier for this UM hunt group

§  The UM dial plan the UM hunt group is part of

You can create the UM hunt group in the EMC, as shown in Figure 2, or you can use the New-UMHuntGroup cmdlet.

 

Figure 2: Creating a new UM hunt group

UM Hunt Groups | Planning for Unified Messaging

A UM hunt group is a logical representation of an existing PBX or IP PBX hunt group. When the hunt group's pilot number receives a call, the PBX or IP PBX looks for the next available extension number to deliver the call. When the call's recipient does not answer an incoming call, or the line is busy because the recipient is on another call, the PBX or IP PBX routes the call to the UM server.

UM hunt groups act as a link between UM IP gateways and UM dial plans. Therefore, you must associate a UM hunt group with at least one UM IP gateway and one UM dial plan. UM hunt groups locate the PBX hunt group from which the incoming call was received. A pilot number that is specified for a hunt group in the PBX also must be specified within the UM hunt group. The pilot number enables the UM server to associate the call with the correct UM dial plan so that it can route the call correctly.

When you create a new UM hunt group, you enable UM servers in the specific UM dial plan to communicate with the UM IP gateway. You need to specify the UM dial plan and the pilot identifier or pilot number that you want it to use with the new UM hunt group.

Note

You can create UM hunt groups only if you have already created a UM IP gateway.