Building inter-communicating system established by public telephone network
A technology of building intercom system and public telephone network, applied in telephone communication, two-party line system station, electrical components, etc., can solve the problems that system equipment cannot be used for other purposes, communication system is not integrated, terminal time is idle, etc. The effect of improving convenience, saving investment costs, and improving utilization
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[0032] Hereinafter, the present invention will be described in detail by taking the wired access network as an example.
[0033] combine figure 1 , figure 2 and image 3As shown, the building intercom system of the present invention utilizes the resident's phone to build the building intercom system, and the resident's phone 1 can adopt a fixed phone or a video phone, a cordless phone, or an extension thereof (it can also be other operator's permission to obtain information) The telephone with the network access license of the Ministry of Industry, or the dedicated telephone with other special functions applicable to this system). The resident’s phone number must be the same operator’s phone number (but it can be from a different office program-controlled exchange), and the residential user’s phone number can be any number, but the short number in the group must be the room number. All residents Phone 1 needs to enable the call waiting function to prevent guests from openi...
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