Features Digital Signal Processing (DSP) technology, plus a full line of software algorithms and utilities. 32-bit bus. Vantage Series platforms support GSM, AccuPitch (Pitch corrected speed control), AccuTalk, AccuDigit, and AccuCall enhanced voice processing algorithms for state-of-the-art voice processing. The PCI-4L is in the Vantage Series of voice boards, multiple PCI-4L's may be installed in a single system. Supports Windows NT and 95, DOS, SCO OpenServer, SCO UnixWare, Solaris, QNX, OS/2 and TAPI. Supports CallWare Callegra, Intersis Voixx, and many other software vendors. Formerly Rhetorex and Lucent CTP