Desktop telephone system

The invention relates to a desktop telephone system. The desktop telephone system comprises voice box hardware and an intelligent control system. The voice box hardware comprises a control information module, a state information module and a voice stream transmission module. The intelligent control system comprises a communication control module, an SIP voice module, an SIP video module and a display module. Accordingly, the function of answering and dialing an SIP soft telephone through an ordinary desktop telephone is achieved, and the function of a headset is replaced through an ordinary telephone handle. One ordinary telephone has two numbers, the SIP soft telephone can be answered and dialed, and answering and dialing of an ordinary fixed telephone are not affected as well. On the basis that existing devices are fully utilized, the user requirement is met with smaller fund input.