Personal computer with transmission and reception handset

In a personal computer with a transmission and reception handset connected to said personal computer, said personal computer comprising:

• a communication line connected to said personal computer;
• an audio driver to output audio data, received through said communication line, to said transmission and reception handset and to output audio data from said transmission and reception handset to said communication line;
• and
• first communication interface means connected to said audio driver to transmit and receive data between the first communication means and said transmission and reception handset;
• said transmission and reception handset comprising:
• a microphone for collecting sounds of an outgoing call;
• a speaker for emanating sounds of an incoming call;
• second communication interface means for connecting said transmission and reception handset to said first communication interface means of said personal computer;
• an analog-to-digital conversion means for converting an audio signal from said microphone into a digital signal in such a manner that said digital signal is transmitted to said second communication interface means and converting a digital signal from said second communication means into an analog audio signal in such a manner that said analog audio signal is transmitted to said speaker;
• and
• a hookswitch, said personal computer with a transmission and reception handset characterized in that said transmission and reception handset may transmit data through said second communication interface means to said personal computer only when said hookswitch is placed in an off-hook condition, wherein said hookswitch is determined to be in the off-hook condition when said audio driver in said personal computer detects audio data being transmitted from said transmission and reception handset and said hookswitch is determined to be in the on-hook condition when no audio data is detected by said audio driver, said audio driver repeatedly detecting the condition of said hookswitch at a previously determined rate.