TRx Personal Phone Call Recorder for Mac - Version 3.00 TRx is a personal phone line recorder program for Mac. TRx lets you manually record telephone calls on a phone line connected to the voice modem (or other telephony card) of your computer.TRx also works as a caller number ID display system and lets you put calls on-hold (and plays on-hold music and messages).TRx Features~ Records telephone calls using a voice modem or TAPI telephony device. ~ Displays caller ID of all incoming calls (subject to hardware and telephone network features). ~ Lets you put calls on hold with a hold button (professional music and messages on-hold included). ~ Caller ID logging of all incoming calls. ~ [Optional] Recording-started prompt, recording-stopped prompt, and record tones. ~ Save recordings as wave files or send recordings by email.