IST-2 Telephone

The IST-2 is a 50-line-button desk/wall-mounted telephone instrument that serves as the user interface to Raytheon digital switching systems. The IST-2 provides the user with a consolidated secure/nonsecure communications device, allowing access to all of the switch resources from a single instrument. This eliminates the need for the user to have to remember particular operational nuances of a communications device.


  • Multimedia secure/nonsecure access
  • Unlimited conferencing
  • Secure/nonsecure access to various networks and radios
  • Multicryptographic access
  • Authenticated MLK voice capability
  • DTMF dial pad is 4x4 with MLPP
  • PTT handset
  • Auxiliary port for handset, headset, or recorder
  • Alarm, automatic extension lockout, automatic security authentification, and caller ID
  • Noice-canceling microphone
  • Simultaneous voice/data/transmission 300 bps to 9.6 kbps and data-only at 19.2 kbps and 56 kbps
  • Indicator light for ringing, off-hook, and message waiting
  • Changeable 1.75" diameter organization seal
  • Meets TSG for on-hook requirements
IST-2 telephone