The invention includes a telephone using the PSTN, a control module, an ADSL
module, and an access and display unit. Using the above, conventional telephone
lines are employed for providing a video telephone capable of bi-directional video
and audio transmissions. The video telephone is connected with the PSTN, and under
circumstances that a receiving party and a calling party are simultaneously using
the video telephone, when a receiving party user dials telephone number of the
receiving party where by the control module unit is activated to send a signal.
Via the PSTN lines, an Internet protocol A or B obtained by the ADSL modules unit
is sent to the control module unit of the receiving party or the calling party.
The two parties are connected using the IPs sent through the PSTN, and a high frequency
band of the ADSL is utilized for transmitting video information.
