We offer licensing of our proprietary software implementation to integrate in your systems:

  • ISDN protocols and CAPI interface;
  • Fax and modem modulation and demodulation algorithms;
  • Fax and voice logging;
  • Voice compression;
  • Echo cancellation;
  • Fax over IP;
  • Voice over IP.

Fax G3 and Fax over IP:

  • Fax modulation and demodulation: V.8, V.21, V.27ter, V.29, V.17, V.33, V.34 half-duplex;
  • Error correction: ECM;
  • Compression: T.4, T.6 and T.85;
  • T.38 and H.323 gateway .

Data Modem:

  • Modem modulation and demodulation: V.8, V.21, V.22, V.22bis, V.23 full-duplex, V.23 half-duplex, V.32, V.32bis, V.34, V.90 digital modem;
  • Error correction: V.42;
  • Compression: V.42bis, V.44.

Line Echo Canceller (LEC):

  • Portable C code;
  • Adaptive line voice echo detection and cancellation;
  • Detection and estimation of round-trip delay on the fly;
  • Resynchronization on change of round-trip delay;
  • Meets the G.165 requirements;
  • Max echo delay 2 sec;
  • Max echo impulse response length 16 ms;
  • Echo detection and adaptation time <1s in majority of calls.

Voice Activity Detector (VAD)

  • Portable C code;
  • Anti-bouncing algorithm is include.

Audio compression:

  • G.711 including addendum for packet loss concealment;
  • G.729 A;
  • G.723.1.