Computer Telephony Interface - Cti Cards

The Computer Telephony Interface - CTI Cards are ideal units for developers to provide cost-effective, highly scalable, computer telephony [CTI] solutions for voice processing applications. A unique multiprocessor architecture comprised of digital signal processor [DSP] and general-purpose microcontrollers to handle all telephony signaling and perform all PULSE / DTMF [touchtone] dialing / sensing and audio/voice signal processing tasks. Onboard DSP provide variable voice encoding at bit rates of 32 Kb/s for Adaptive Pulse Code Modulation [ADPCM] and 64 Kb/s A -law or A-law for Pulse Code Modulation [PCM]. Sampling rates and coding methods are selectable on a channel-by-channel basis. Applications may dynamically switch the coding method to optimize data storage or voice quality as the need arises. Computer Telephony Interface - CTI Cards firmware also provides reliable DTMF detection, DTMF / PULSE cut-through, and talk off/play off suppression over a wide variety of telephone line conditions. These cards provide connectivity to the telephony network via analog trunks and ISDN-PRI E1.