TELEPHONE SYSTEM AND TELEPHONE TERMINAL FOR THE TELEPHONE SYSTEM

PROBLEM TO BE SOLVED: To easily detect presence/absence of any type of terminal or master unit while attaining reduction of communication network load. SOLUTION: According to embodiments, a telephone terminal connected through a communication network to a master unit, which performs communication be...

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Bibliographic Details
Main Author KITAZAWA KENICHI
Format Patent
LanguageEnglish
Published 28.07.2011
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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Summary:PROBLEM TO BE SOLVED: To easily detect presence/absence of any type of terminal or master unit while attaining reduction of communication network load. SOLUTION: According to embodiments, a telephone terminal connected through a communication network to a master unit, which performs communication between a plurality of telephone terminals registered in a terminal management table, is targeted and includes a timer, a transmission means and a detection means. The timer starts counting a predetermined time in timing to transmit a connection confirmation signal for confirming presence/absence of a connection with the master unit. After the lapse of the predetermined time, set for each terminal, as a time from transmission counted by the timer, the transmission means transmits the connection confirmation signal to the master unit. If a response signal to the transmission of the connection confirmation signal is redirected from the master unit, the detection means detects the presence of the master unit. COPYRIGHT: (C)2011,JPO&INPIT
Bibliography:Application Number: JP20110041666