JPH05284548A - Signal transmission system - Google Patents

Signal transmission system

Info

Publication number
JPH05284548A
JPH05284548A JP10248592A JP10248592A JPH05284548A JP H05284548 A JPH05284548 A JP H05284548A JP 10248592 A JP10248592 A JP 10248592A JP 10248592 A JP10248592 A JP 10248592A JP H05284548 A JPH05284548 A JP H05284548A
Authority
JP
Japan
Prior art keywords
signal
stop
fault
signal transmission
group signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10248592A
Other languages
Japanese (ja)
Inventor
Masao Kanekura
正雄 金倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOKUSAI SYST KK
Original Assignee
KOKUSAI SYST KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KOKUSAI SYST KK filed Critical KOKUSAI SYST KK
Priority to JP10248592A priority Critical patent/JPH05284548A/en
Publication of JPH05284548A publication Critical patent/JPH05284548A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent unnecessary start by providing a time difference between the stop of a high group signal and that of a low group signal to clearly distinguish between the signal stop before communication start and the signal break due to a fault. CONSTITUTION:A time difference is provided between the stop of the high group signal and that of the low group signal at the time of stopping the DTMF signal transmission for the purpose of starting the other party before the communication start. Thus, the reception side refers to the time difference of the signal break to distinguish between the signal stop for start and the signal break (the high group signal and the low group signal are simultaneously stopped in this case) due to a fault. Consequently, unnecessary start due to the fault is prevented, and a fault alarm is generated.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、アナログ電話専用回線
を使用してダイヤル信号の伝送を行う信号伝送装置にお
ける信号伝送方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signal transmission system in a signal transmission device for transmitting a dial signal using an analog telephone dedicated line.

【０００２】[0002]

【従来の技術】ダイヤル信号の伝送にＤＴＭＦ信号を利
用する信号伝送装置においては、従来は、無通話時に０
〜９、＊、＃以外のＤＴＭＦ信号を流しておき、通話開
始時にこの信号を止めて相手側を起動させ、その後にダ
イヤル信号を送っている。2. Description of the Related Art In a signal transmission device that uses a DTMF signal for transmitting a dial signal, conventionally, there is no communication during a call.
A DTMF signal other than ~ 9, *, and # is sent, the signal is stopped at the beginning of a call to activate the other party, and then a dial signal is sent.

【０００３】[0003]

【発明が解決しようとする課題】従来の信号伝送装置に
あっては、通話開始時に単に信号を止めるだけで相手側
を起動させているので、回線障害または送信側装置故障
による信号断との区別がつかないという問題点があっ
た。In the conventional signal transmission apparatus, since the other side is activated by simply stopping the signal at the start of the call, it can be distinguished from the signal interruption due to the line failure or the failure of the transmission side apparatus. There was a problem that it did not work.

【０００４】本発明は、通信開始に先立つ信号止めと、
障害による信号断とを明確に区別して、無用な起動をさ
せないとともに、障害表示が可能な信号伝送方式を提供
することを目的としている。The present invention includes a signal stop prior to the start of communication,
It is an object of the present invention to provide a signal transmission method that can clearly display a signal disconnection due to a failure, prevent unnecessary activation, and display a failure.

【０００５】[0005]

【課題を解決するための手段】上記目的を達成するため
に、本発明の信号伝送方式においては、通話開始に先立
つ相手側起動のためのＤＴＭＦ信号送信停止時に、高郡
信号の停止と低群信号の停止に時間差を設けたものであ
る。In order to achieve the above object, in the signal transmission system of the present invention, when the DTMF signal transmission for starting the other party is stopped prior to the start of the call, the high count signal is stopped and the low group is stopped. There is a time difference in stopping the signal.

【０００６】[0006]

【作用】上記のような信号伝送方式においては、受信側
で信号断の時間差を見ることによって、起動のための信
号停止か、障害による信号断（この場合は、高群信号と
低群信号がほぼ同時に止まる）かを区別できる。In the signal transmission system as described above, by observing the time difference of the signal disconnection on the receiving side, the signal stop for the start or the signal disconnection due to the failure (in this case, the high group signal and the low group signal are It stops at about the same time).

【０００７】[0007]

【発明の効果】本発明は、以上説明したように構成され
ているので、障害による無用な起動が防止できるととも
に、障害警報を発生させる効果を有する。Since the present invention is configured as described above, it is possible to prevent unnecessary activation due to a fault and to generate a fault alarm.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 通話開始に先立つ相手側起動のためのＤ
ＴＭＦ信号送信停止時に、高群信号の停止と低群信号の
停止に時間差を設けたことを特徴とする信号伝送方式。1. D for starting the other party prior to the start of a call
A signal transmission method characterized by providing a time difference between the stop of the high group signal and the stop of the low group signal when the TMF signal transmission is stopped.
JP10248592A 1992-03-30 1992-03-30 Signal transmission system Pending JPH05284548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10248592A JPH05284548A (en) 1992-03-30 1992-03-30 Signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10248592A JPH05284548A (en) 1992-03-30 1992-03-30 Signal transmission system

Publications (1)

Publication Number Publication Date
JPH05284548A true JPH05284548A (en) 1993-10-29

Family

ID=14328751

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10248592A Pending JPH05284548A (en) 1992-03-30 1992-03-30 Signal transmission system

Country Status (1)

Country Link
JP (1) JPH05284548A (en)

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