Integrated telephone intercommunication and alarm electronic controller

摘要

A telecommunication and alarm system for connection to: a four-wire or two-wire telephone network, a two-terminal doorphone unit, and one or more alarm detectors connected in parallel COMPRISING a line and extension connection for communication with the "tip" and "ring" wires of the incoming telephone line and the service pair of wires enabling in-house plug-in installation of the inventive device; and an alternate extension connection for communication with the "tip" and "ring" pair of the telephone wires leading to the in-house single-line extension telephones; a plurality of connection modules each equipped with a slide entry plug and a slide entry jack, the plug end of which to be inserted within the telephone wall outlet, and the jack of which to receive the telephone cord of the extension telephone set; an input connection for unidirectional communication with a two-terminal doorphone unit, from any in-house extension telephone, and means to toggle the direction of speech upon pulsing one same digit on the extension telephone keypad; means for generating sequencing ring tones to the extension sets and for powering said extensions sets achieving complete intercommunication between said extension sets; means for detecting tone signals and hook status of the extensions telephones, for detecting ring tones and tone status signals from the external telephone line, and for generating automated tone dialing on the external telephone line; an input connection for one or various alarm detectors; an output connection for activating a tape cassette recorder upon off-hook status of any one extension set and for recording the audio signals of the telephone calls; an output connection for a doorstrike in order for the in-house user to open an entrance door or gate by hitting a key on the telephone set keypad after accessing the doorphone; computing means to support all hereby operating characteristics automatically and by response to user coded commands input from the extension sets while off-hook.