Developers Secure Communication from Eavesdropping with SPIRIT Software

3/17/2004 - SPIRIT (, the biggest eXpressDSP software house in Europe (Texas Instruments processor sales data), offers a software solution for developing wired and wireless single-chip Secure Phones for encrypted voice and fax exchange via PSTN and IP networks.

Government officials and business people need guaranteed privacy and protection against eavesdroppers. Now software telecommunication companies get the opportunity to develop a Secure Phone providing end-to-end secure voice and fax communication between subscribers in the easy way with SPIRIT solution.

Secure Phone encrypts voice and fax data into complex code, by seamless integration with any one of various encryption schemes. A similar unit at the receiving end decodes the encrypted data and turns it straight back into clear, high-quality intelligible speech. This works just like a normal phone conversation, except that an assumed intruder tapping the line will get nothing but a stream of impregnable code.

Based on C54CST chip, SPIRIT solution is very simple in development. Modem, voice and telephony algorithms, speech codecs ROM-ed into C54CST chip provide a solid base for developing fully-functional Secure Phones capable of coded voice and fax data exchange for safe and protected communication.

Being the heart of the device C54CST is used for:

The software can be used for a phone with encryption or a separate security device being connected to a phone. Secure Phones can also be used as regular phones both domestically and abroad.

"Even if somebody is monitoring your phone line all he will intercept is a stream of incomprehensible data". " - says Andrew Sviridenko, founding CEO of SPIRIT.

SPIRIT ( is a prominent supplier of high-quality DSP software products, including data/fax modem, telephony, VoIP, FoIP, sophisticated speech processing, GPS, audio, and more. SPIRIT's flexible licensing model includes cost efficient product customization to specific clients' needs. SPIRIT communication software works within hardware solutions from clients including Atmel, Furuno, JRC, NEC, Nortel Networks, Panasonic, Philips, Samsung, Siemens, Tadiran, Texas Instruments, and Toshiba among 100+ other OEMs. Texas Instruments is shipping SPIRIT's software ROM-ed into TI C54CST processor.

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