Intel Dialogic D/320-JCT

Intel Dialogic D/320-JCT ... to provide cost-effective, highly scalable, high-density communications applications requiring multimedia resources like voice and fax in a single PC slot. Offering a rich set of advanced features, this board supports state-of-the-art digital signal processing (DSP) technology and industry-standard PCI bus and CT Bus technologies. Onboard DSP-based fax lets developers maximize the number of boards in the system for multimedia communications applications like Web-enabled call centers, unified messaging, or interactive voice response. The option to use new voice coders such as GSM and G.726 (the de facto standards when complying with Voice Profile for Internet Messaging [VPIM] standards) provides the capability to build unified messaging solutions while extending existing legacy messaging systems.

A unique multiprocessor architecture comprised of DSPs and general-purpose microprocessors performs all DTMF (touchtone) and audio/voice signal processing tasks. Onboard DSPs provide variable voice encoding at bit rates of 24 and 32 Kb/s for Adaptive Differential Pulse Code Modulation (ADPCM), 48 and 64 Kb/s µ-law or A-law for Pulse Code Modulation (PCM), 13 Kb/s for GSM, and 32 Kb/s for G.726. Sampling rates and coding methods are selectable on a channel-by-channel basis. Applications can dynamically switch sampling rate and coding method to optimize data storage or voice quality as the need arises. Spring Ware firmware also provides reliable DTMF detection, DTMF cut-through, and talk off/play off suppression over a wide variety of telephone line conditions.