IP telephone with functional pieces arranged inside

The utility model discloses an IP telephone with the functional pieces arranged inside, which comprises a telephone main body. A word-passing and receiver unit, a dialing, answering and hang-up processing unit, a dial plate, an audio filtering and amplifying unit, an AD/DA conversion unit, a data compression/decompression unit, a USB electric level processing unit, a serial port interruption processing unit, a serial port information buffer unit, a central processing unit and a network interface processing unit are arranged in the telephone main body. The network interface processing unit is linked with the Internet through a network interface; the word-passing and receiver unit, the dialing, answering and hang-up processing unit, the dial plate and the audio filtering and amplifying unit and the network interface processing unit are all connected with the central processing control unit. The functional pieces of the IP telephone are arranged inside and the IP telephone can be used like a normal telephone wit