Voiceband modem AVC-5610 was especially developed for noisy and distorted Russian telephone channels. Modem has adapted and enhanced firmware with some additional features.
Advanced Voice Courier Firmware
It is a new firmware to U.S.Robotics Courier V.Everything modem. Do you have an old Courier modem ? Do you want to turn
your old modem to home call center ? Do you want to record your phone calls to personal computer ? You have to download Advanced Voice Courier firmware !