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Microsoft® Lync® Server 2013 Unleashed Second Edition by Randy Wintle, Alex Lewis, David Ross, Tom Pacyk

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Media Gateways

If Direct SIP is not an option because the PBX does not support the feature or has no IP PBX capabilities, a third-party device called a media gateway can be used to complete the integration. Media gateways act as an intermediary between the PBX and Lync Server to help translate traditional PBX protocols to SIP traffic that Lync Server 2013 can understand. In some cases it may be preferable to use a media gateway instead of Direct SIP to handle additional number translation of transcoding features. Media gateways are produced by many vendors today and provide a wide array of integration options for businesses looking to implement the voice features of Lync Server 2013. They typically have traditional telephony ports for T1/E1 digital ...

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