Software secures phone conversations

A novel software solution simplifies the development of wired and wireless single-chip secure phones for encrypted voice and fax exchange via PSTN and IP networks.

A novel software solution simplifies the development of 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 can develop a secure phone providing end-to-end secure voice and fax communication between subscribers.

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.

The system works just like a normal phone conversation, except that any intruder tapping the line will receive nothing but a stream of impregnable code.

Based on the TI C54CST chip, the Spirit Secure Phone solution is very simple to develop.

Modem, voice and telephony algorithms, and 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.

The C54CST is used for: sending/receiving encrypted data containing voice or fax (modem); addon algorithms (G.723.1, G3 Fax/T.38) used to compress voice and process fax data; processing application code (encryption/decryption algorithm); and establishing connection (tone generation).

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.

Back to top