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How to Create a New Unified Messaging IP Gateway

 

Applies to: Exchange Server 2007 SP3, Exchange Server 2007 SP2, Exchange Server 2007 SP1, Exchange Server 2007

Topic Last Modified: 2007-08-21

This topic explains how to use the Exchange Management Console and the Exchange Management Shell to create a new Unified Messaging (UM) IP gateway. When you create a new UM IP gateway, you enable UM servers to connect to a new IP gateway or an IP Private Branch eXchange (PBX) that is enabled for Session Initiation Protocol (SIP). Immediately after you create a UM IP gateway, you should create a new UM hunt group and then associate the UM hunt group with the UM IP gateway. You can associate the UM IP gateway with one or more UM dial plans by creating one or more UM hunt groups.

When you create a UM IP gateway, you can configure the UM IP gateway object to use an IP address or a fully qualified domain name (FQDN). If you use an FQDN you must make sure that you have correctly configured a DNS host record for the IP so that the host name will be correctly resolved to an IP address.

A Unified Messaging server will communicate only with IP gateways or IP PBXs that are listed as a trusted SIP peer. In some cases if two IP gateways are configured to use the same IP address, an event with ID 1175 will be logged. Unified Messaging protects against unauthorized requests by retrieving the internal URL of the Unified Messaging Web Services Virtual Directory that is located on the server that has the Client Access role installed and then uses the URL to build the list of FQDNs for the trusted SIP peers. When two FQDNs are resolved to the same IP address this event will be logged.

noteNote:
Before the IP gateway can process incoming calls, you must associate the UM IP gateway with at least one UM dial plan, and a UM server must be associated with the UM dial plan.
noteNote:
If you associate a UM dial plan with the UM IP gateway when you create the dial plan, a UM hunt group will also be created.

To perform this procedure, the account you use must be delegated the Exchange Organization Administrator role.

For more information about permissions, delegating roles, and the rights that are required to administer Microsoft Exchange Server 2007, see Permission Considerations.

  1. In the console tree of the Exchange Management Console, expand the Organization Configuration node.

  2. In the console tree, click Unified Messaging.

  3. In the result pane, click the UM IP Gateways tab.

  4. In the action pane, click New UM IP Gateway.

  5. In the New UM IP Gateway wizard, in the Name section, type the name of the UM IP gateway. This is the display name for the UM IP gateway.

  6. In the IP Address section, type the IP address for the UM IP gateway, and then click New.

    noteNote:
    Alternatively, you can enter a fully qualified domain name (FQDN) for the UM IP gateway. If you choose to use an FQDN, you must add the appropriate host records with the correct IP addresses to the DNS zone. If you are configuring a UM IP gateway that will be associated with a dial plan that is operating in secure mode, you must create the UM IP gateway with an FQDN.
  7. On the New IP Gateway page, click New.

  8. On the Completion page, click Finish.

  • Run the following command:

    New-UMIPGateway -Name MyUMIPGateway -Address 10.10.10.1
    

For more information about syntax and parameters, see New-UMIPGateway.

importantImportant:
To enable Mutual Transport Layer Security (MTLS) between a UM IP gateway and a dial plan that is operating in secure mode, you must first configure the UM IP gateway with an FQDN and configure it to listen on port 5061. You must also verify that any IP gateways or IP PBXs have also been configured to listen on port 5061 for MTLS. To configure a UM IP gateway, run the following command: Set-UMIPGateway -identity MyUMIPGateway -Port 5061.

 
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