The DualSpan Series of digital voice and network interface boards provide two E 1 or T 1 ISDN Primary Rate Interface lines of service termination and call processing for 30 or 60 voice channels E 1 boards or 24 or 48 channels T 1 boards in a single PC slot. Functionally, the DualSpan boards are equivalent to two single span boards, such as the D300SC E1 or D240SC T1, combined into one single slot ISA board. A unique multiprocessor architecture comprising digital signal processors DSPs and general purpose microprocessors handles all telephony signaling and performs all DTMF, MF, and audiovoice signal processing tasks. The DualSpan boards, as members of the DIALOGHD High Density Voice and Switching Products Series, are based upon Signal Computing System Architecture SCSA . SCSA provides an open architecture that enables developers to use products from multiple vendors to build a unified computer telephony solution. SCSA provides features such as distributed switching, logical addressing, and location independent resource management.....Read more and compare prices for D480SC 2T1 48 Port Voice Board Controller w Interface For 2 T1 Lines at WWW.SHOPTIONS.NET
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