The Intel Dialogic D/600SC-2E1 board provides two E-1 ISDN Primary Rate Interface (PRI) lines of service termination and call processing for 60 voice channels (E-1 boards) in a single PC slot. A unique multiprocessor architecture comprising digital signal processors (DSPs) and general-purpose microprocessors handles all telephony signaling and performs all dual tone multifrequency (DTMF), MF, and audio/voice signal processing tasks. These Voice Processing Boards have a wide applicational use such as Messaging, Contact center and e-Business, PC-PBX, Switching and call completion, Prepaid/debit card and Gateway switch.