Building intercom system's indoor set and building intercom system

The embodiment of the utility model provides a building intercom system's indoor set, this indoor set includes indoor set and mobile terminal, wherein, indoor set and mobile terminal can dismantle theconnection, and the indoor set is equipped with proximity switch, mobile terminal have be used for controlling the indoor set and with building door machine video communication's application, proximity switch is used for detecting the indoor set and mobile terminal connects to it is connected with the indoor set communication to trigger mobile terminal. Obviously, the indoor set of this kind of indoor set not only can carry with mobile terminal and use but also can the exclusive use, accessible mobile terminal control indoor set and carry out video voice interaction with lou menji when carryusing with mobile terminal possesses the function of talkbacking with loumenji during the exclusive use, saved the camera and the display screen of present indoor set, simple structure and with low costs. On the basis, the emb