Special telephone device of live broadcasting satellite

The invention discloses a special telephone device of a live broadcasting satellite, and the device is used for implementing the function of dialing on a set top box of the live broadcasting satellite. The technical scheme is as follows: the device is connected with a voice DB9 plug of the set top box of the live broadcasting satellite, and the device comprises a central control and communicationmodule, a display module, a key input module and an audio frequency processing module, wherein the central control and communication module is respectively connected with the display module, the key input module and the audio processing module, thus the control on each module in the device and the communication of an RS232 interface among positioning modules in the set top box of the live broadcasting satellite are realized; the key input module receives the key input of a user; the display module displays information to the user; and the audio frequency processing module processes an audio frequency input signal and an audio frequency output signal which are output by the set top box of the live broadcasting satellite.