Short description of IVM Telephone Answering Attendant 5.03: IVM is a telephone answering machine, voice mail, phone attendant and interactive voice response (ivr) program for Windows computers with voice modems or professional telephony line devices.Just run the install file and IVM will be ready to answer calls. But you can also create a sophisticated telephone interactive response system. You will find many exciting ways to use IVM to provide information, serve your customers and save time.