IVOX logo

IVOX, the Interactive VOice eXchange application, provides a telephone-like service via Internet Protocol (IP) based Local Area (LAN) and Wide Area (WAN) data networks. IVOX supports a number of voice encoding algorithms with data rates extending from as low as 600 bits/sec to 32 kbps. IVOX supports point-to-point and IP-multicast (conferencing) voice communications.

IVOX Features

  • Multiple voice data rates: 600 bps, 800 bps, 1200 bps, 2400 bps, 4800 bps, 13.5 kbps, and 32 kbps.
  • Point-to-point calls and IP Multicast conferencing.(The Unix versions are compatible with UCL's Session Directory (sdr) tool so IVOX can be used as an MBONE tool ... the Windows version will soon be sdr-compatible, too)
  • Support for multiple simultaneously active calls/conferences.
  • Easy-to-use graphical user interface.
  • Support for Web browser assisted on-line phone book "Web Directory"
  • Support for different platforms and operating systems: Solaris, SGI IRIX, Linux, HPUX, and Windows 95/NT. (Others, including MacOS, are in development)
  • Experimental support for the IETF Reservation Protocol (RSVP). Ivox has been demonstrated with Cisco routers which support RSVP. The Unix version of Ivox works with ISI's rsvpd. RSVP support will be introduced for the Windows version of Ivox soon.

Click Speech Samples to hear how these algorithms sound.

Annotated screenshots of IVOX in Action


Beta versions of IVOX and additional documentation are available at our downloads section.

Contact Info

If you are interested in more information about IVOX, please contact ivox_info@nrl.navy.mil