Configure an IP Gateway to Communicate with a PBX


Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2

Topic Last Modified: 2009-08-19

When you configure your telephony and data networks for Microsoft Exchange Server 2010 Unified Messaging (UM), you must correctly configure the IP gateways so they communicate with the Unified Messaging servers running Exchange 2010. You must also correctly configure the IP gateways to communicate with the Private Branch eXchanges (PBXs) in your organization. You can use the information and links to configure an IP gateway to communicate with a PBX.

Exchange 2010 Unified Messaging supports only Session Initiation Protocol (SIP) over Transmission Control Protocol (TCP).

When you configure an IP gateway, you must consider whether the IP gateway device is analog, digital, or analog and digital. If the IP gateway interface that connects to a PBX is analog, you must correctly configure the appropriate settings to enable the IP gateway to communicate with a PBX. If the IP gateway interface that connects to a PBX is digital, there may be no additional configuration required to enable the digital interface to communicate with a PBX.

The following list of suggested resources contains information that can help you correctly configure your IP gateways:

  • IP gateway, IP PBX, and PBX documentation   The Exchange TechCenter contains configuration files and setup information you can use when you configure IP gateways, IP PBXs, and PBXs. For more information, see Telephony Advisor for Exchange Server 2007.

  • Configuring an AudioCodes-based IP gateway   You can find the latest support and configuration information at the Microsoft UM Specialist Resource Page to help you configure AudioCodes-based IP gateways for use with Unified Messaging.

  • Configuring a Dialogic-based IP gateway   You can find the latest support and configuration information for Dialogic-based IP gateways at the Dialogic Technical Documentation Web site.

We also recommend that all customers who plan to deploy Exchange 2010 Unified Messaging obtain the assistance of a Unified Messaging specialist. A Unified Messaging specialist will help make sure that there's a smooth upgrade to Unified Messaging from a legacy voice mail system. Performing a new deployment or upgrading a legacy voice mail system requires significant knowledge about PBXs and Exchange 2010 Unified Messaging. For more information about how to contact a Unified Messaging specialist, see the Microsoft Exchange Server 2007 Unified Messaging (UM) Specialists Web site.

When you perform administrative tasks on the IP gateway using a Web browser, the HTTP requests sent over the network when you're configuring an IP gateway device aren't encrypted. To increase the level of security for the IP gateways on your network, use Internet Protocol security (IPsec) or Secure Sockets Layer (SSL) to help protect the administrative credentials and data transmitted over the network. We also recommend that you use a strong authentication mechanism and complex administrative passwords to protect the administrative credentials for the device.
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