QtPhone is a cross-platform telephone emulation application designed to be used with a PC, speakers, microphone, V.92 voice modem and a standard phone line. ISDN, xDSL and VoIP will be supported. Features include Caller Identification and Voice Mail. -QtPhone is a cross-platform telephone emu IBM application designed to be used with a PC , speakers, microphone, V.92 voice modem and a standard phone line. ISDN , xDSL and VoIP will be supported. Features inc lude Caller Identification and Voice Mail.