JPS59211366A

System for transmitting general talkie of digital subscriber line

Abstract

PURPOSE:To attain connecting operation at each subscriber line to an incoming call generated at random by transmitting a signal for incoming connection switches at each prescribed time as a continuous talkie signal. CONSTITUTION:In a talkie transmission system informing a failed state of a subscriber line to a calling subscriber free of charge if a failure takes place in the subscriber line, a continuous talkie signal generator 5 and a signal generator 6 for incoming connection are connected to a controller 7. The controller 7 changes over a signal tone from the talkie signal generator 5 and a signal from the generator 6 at each prescribed time and transmits the signal for incoming connection to each subscriber SLC via a distribution stage 8. If a newly incoming call arises at the point of time of this transmission, while a sequence of incoming connection is followed and no interference is given to an incoming call being already in talking state, a continuous talkie tone is made to listen to a new calling subscriber.

Term

Term ended

Projected expiry passed 17 May 2003, 23.4 years ago.

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1 claim: 1 independent, 0 dependent

  1. 1
    [Claim(s)] 【特許請求の範囲】 In a mail arrival free talkie sending-out method which notifies a digital subscriber's line obstacle in a switchboard which stores a digital member, etc., A digital subscriber's line-Equality talkie sending-out method comprising:An announcement machine which repeats and sends out a message digitized in order to notify said digital subscriber's line obstacle, A reverse training pattern generator which outputs a reverse tray Ninkha turn signal required for a sequence of inbound connection, A control device which stops said message by which a repetition output is carried out for every definite period of time, and outputs said reverse training pattern signal, A surroundings lump prevention circuit from which a message and a reverse training pattern signal which are outputted from said control device without being provided for every digital subscriber's line and generating interference between each digital subscriber's line are relayed to each digital subscriber's line. ディジタル加入者を収容する交換機におけるディジタル加入者回線障害等を通知する着信無料トーキ送出方式において、前記ディジタル加入者回線障害等を通知するためディジタル化されたメツセージを繰返し送出するアナウンスマシンと、着信接続のシーケンスに必要な逆トレーニンクハターン信号を出力する逆トレーニングパターン発生装置と、前記繰返し出力されるメツセージを一定時間毎に止めて前記逆トレーニングパターン信号を出力する制御装置と、各ディジタル加入者回線毎に設けられ、各ディジタル加入者回線間に干渉を発生させることなく前記制御装置から出力されるメツセージおよび逆トレーニングパターン信号を各ディジタル加入者回線に中継する廻り込み防止回路とから構成したディジタル加入者回線-斉トーキ送出方式。