O'Reilly logo

Microsoft® Lync Server 2010 Unleashed by Tom Pacyk, Andrew Abbate, Alex Lewis

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Supported IP/VoIP Hardware

Exchange Server 2010 unified messaging relies on the capability of the IP/VoIP gateway to translate time-division multiplexing (TDM) or telephony circuit-switched based protocols, such as Integrated Services Digital Network (ISDN) or QSIG, from a PBX to protocols based on voice over IP (VoIP) or IP, such as Session Initiation Protocol (SIP), Real-Time Transport Protocol (RTP), or T.38 for real-time facsimile transport.

Although there are many types and manufacturers of PBXs, IP/VoIP gateways, and IP/PBXs, there are essentially two types of IP/VoIP gateway component configurations:

IP/VoIP Gateway—A legacy PBX and an IP/VoIP gateway provisioned as two separate devices. The Unified Messaging server communicates with ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required