JPH03240341A - Isdn communication system - Google Patents

Isdn communication system

Info

Publication number
JPH03240341A
JPH03240341A JP2036356A JP3635690A JPH03240341A JP H03240341 A JPH03240341 A JP H03240341A JP 2036356 A JP2036356 A JP 2036356A JP 3635690 A JP3635690 A JP 3635690A JP H03240341 A JPH03240341 A JP H03240341A
Authority
JP
Japan
Prior art keywords
station
slave station
attribute information
line
host
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
JP2036356A
Other languages
Japanese (ja)
Inventor
Hiroyuki Ozaki
尾崎　弘行
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP2036356A priority Critical patent/JPH03240341A/en
Publication of JPH03240341A publication Critical patent/JPH03240341A/en
Pending legal-status Critical Current

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  • Data Exchanges In Wide-Area Networks (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE:To attain quick priority connection by allowing a host station to reference a built-in memory, discriminating a slave station with high priority so as to control the connection of a slave station in the communication system in which plural slave stations are connected to the host station via an ISDN circuit network. CONSTITUTION:Attribute information comprising own telephone number information and priority generated by a working memory 6 and a control section 5 or the like in each of plural slave stations T connecting to a host station S via an ISDN circuit network 10 is stored in a memory 3 of the station S via a D channel. Then the attribute information received from the station T called newly via the D channel is compared with relevant attribute information of the memory 3 in the station S and when the priority of the station T is discriminated high, a line during communication is interrupted via a communication control section 2 and the line is connected between the station S and the station with high priority and a slave station with high priority is connected to the host station quickly.

Description

【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明はホスト局（端末装置）に対して複数のスレーブ
局がＩＳＤＮ回線網を介して接続して成る通信システム
の端末装置に関する。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a terminal of a communication system in which a plurality of slave stations are connected to a host station (terminal device) via an ISDN line network. Regarding equipment.

（従来の技術〉 従来この種の通信システムはセキュリティーシステム等
に用いられており、送信すべきデータが発生したスレー
ブ局がＩＳＤＮ凹線を介してホスト局に発呼することに
より、ホスト局との回線を接続する方式がとられている
。このような方式では、ホスｌへ局の回線は呼び出し信
号の先着順で接続されてしまうため、重要度の高いデー
タを送信しようとしているスレーブ局も、重要度の低い
データを送信しようとしているスレーブ局と全く同等の
立場で回線空き待ちをしなければならない二とになる。(Prior art) This type of communication system has conventionally been used in security systems, etc., in which a slave station that generates data to be transmitted makes a call to the host station via the ISDN concave line, thereby establishing communication with the host station. In this method, the lines of stations to host L are connected on a first-come, first-served basis, so even slave stations that are trying to send highly important data can This means that the slave station has to wait for an available line in exactly the same position as a slave station trying to transmit data of low importance.

従って、ホスト局は重要度の高いデータを場合によって
はなかなか受信することができず、上記セキュリティー
システム等では重大な支障が生じるという不都合があっ
た。Therefore, the host station may not be able to receive highly important data in some cases, causing serious problems in the security system and the like.

（発明が解決しようとする課題〉 従来、複数のスレーブ局がＩＳＤＮ回線網を介してホス
ト局に接続して成る通信システムでは、スレーブ局がホ
スト局に発呼して回線を接続する方式を採っているため
、ホスト局とスレーブ局との回線の接続は送信データの
重要度には関わり無く、着信順となるなめ、重要度の高
いデータをホスト局が受信するのが遅れてしまうという
不都合があった。(Problem to be Solved by the Invention) Conventionally, in a communication system in which a plurality of slave stations are connected to a host station via an ISDN line network, a method has been adopted in which the slave station makes a call to the host station to connect the line. Therefore, the line connection between the host station and the slave station is done in the order of arrival, regardless of the importance of the transmitted data, which causes the inconvenience that the host station is delayed in receiving highly important data. there were.

そこで本発明は上記の欠点を除去するもので、優先度の
高いデータを送信しようとしているスレーブ局との間の
回線を、優先的にホスト局に接続することができるＩＳ
ＤＮ通信システムを提供することを目的としている。Therefore, the present invention aims to eliminate the above-mentioned drawbacks, and is an IS system that can preferentially connect a line between a slave station that is attempting to transmit high-priority data to a host station.
The purpose is to provide a DN communication system.

〔発明の構成〕[Structure of the invention]

（課題を解決するための手段） 本発明はホスト局に複数のスレーブ局をＩＳＤＮ回線を
介して接続して成る通信システムにあって、各局はＩＳ
ＤＮ回線のＤチャネルを用いて発呼し、ＩＳＤＮ回線の
Ｂチャネルを用いてデータを送信するシステムにおいて
、データの優先順位と自己の電話番号情報から成る属性
情報を作成又は設定する作成手段と、ホスト局を発呼し
て回線が接続されると、前記作成手段によって作成又は
設定された属性情報を前記Ｄチャネルを介してホスト局
に送信する属性情報送信手段と、ホスト局からの発呼に
より回線が接続されるとデータを前記Ｄチャネルを介し
てホスト局に送信するデータ送信手段とをスレーブ局側
に設け、スレーブ局から送信されてきた前記属性情報を
受信してこれをスレーブ周毎に区別して記憶する記憶手
段と、通信中のスレーブ局の属性情報を前記記憶手段か
ら読み出すと共に、新たに発呼してきたスレーブ局から
受信した属性情報と前記読み出した属性情報とを比較し
て優先順位が高いスレーブ局を判定する判定手段と、こ
の判定手段によって新たに発呼してきたスレーブ局の優
先順位が高いと判定された場合、現在通信中の回線を切
断して新たに発呼してきたスレーブ局の属性情報が示す
電話番号先に発呼して、このスレーブ局との間に回線を
接続する発呼手段とをホスト局側に設けた構成を有する
。(Means for Solving the Problems) The present invention provides a communication system in which a plurality of slave stations are connected to a host station via an ISDN line, and each station has an ISDN line.
In a system that makes a call using a D channel of a DN line and transmits data using a B channel of an ISDN line, a creating means for creating or setting attribute information consisting of a data priority and own telephone number information; When the line is connected by calling the host station, attribute information transmitting means transmits the attribute information created or set by the creating means to the host station via the D channel; A data transmitting means for transmitting data to the host station via the D channel when the line is connected is provided on the slave station side, and the slave station receives the attribute information transmitted from the slave station and transmits it every slave cycle. The attribute information of the slave station in communication is read out from the storage means for storing the information separately, and the attribute information received from the newly calling slave station is compared with the read attribute information to determine the priority order. a determining means for determining a slave station with a high priority, and a determining means for determining a slave station that has a high priority, and when it is determined by this determining means that a newly calling slave station has a high priority, disconnecting the currently communicating line and determining a slave station that has newly made a call. The host station has a configuration in which the host station is provided with a calling means that makes a call to the telephone number indicated by the attribute information of the station and connects a line to the slave station.

前記構成に付加して、通信が終了すると、記憶手段に記
憶されている属性情報を全て比較する比較手段と、この
比較手段の比較結果に基づいて１番優先順位の高いスレ
ーブ局の電話番号を前記記憶手段から読み出して、この
電話番号先のスレーブ局に発呼する優先順付順発呼手段
を設けた構成を有する。In addition to the above configuration, when communication is completed, there is a comparison means for comparing all the attribute information stored in the storage means, and a telephone number of the slave station with the highest priority based on the comparison result of this comparison means. The apparatus is constructed to include a priority calling means for reading out the telephone number from the storage means and calling a slave station at the destination of the telephone number.

（作用） 本発明のＩＳＤＮ通信システムにおいて、スレーブ局に
設けられた作成手段はデータの優先Ｊｌｌｉ位と自己の
電話番号情報から成る属性情報を作成又は設定する。属
性情報送信手段はホスト局を発呼して回線が接続される
と、前記作成手段によってｆ作成又は設定された属性情
報を前記Ｄチャネルを介してホスト局に送信する。デー
タ送信手段はホスト局からの発呼により回線が接続され
るとデータを前記Ｄチャネルを介してホスト局に送信す
る。記憶手段はスレーブ局から送信されてきた前記属性
情報を受信してこれをスレーブ周毎に区別して記憶する
。判定手段は通信中のスレーブ局の属性情報を前記記憶
手段から読み比すと共に、新たに発呼してきたスレーブ
局から受信した属性情報と前記読み出した属性情報とを
比較して優先順位が高いスレーブ局を判定する。発呼手
段は前記判定手段によって新たに発呼してきたスレーブ
局の優先順位が高いと判定された場合、現在通信中の回
線を切断して新たに発呼してきたスレーブ局の属性情報
が示す電話番号先に発呼して、このスレーブ局との間に
回線を接続する。(Operation) In the ISDN communication system of the present invention, the creation means provided in the slave station creates or sets attribute information consisting of data priority Jlli and own telephone number information. When the attribute information transmitting means calls the host station and the line is connected, the attribute information transmitting means transmits the attribute information f created or set by the creating means to the host station via the D channel. The data transmitting means transmits data to the host station via the D channel when the line is connected by a call from the host station. The storage means receives the attribute information transmitted from the slave station and stores it separately for each slave cycle. The determination means reads and compares the attribute information of the slave stations in communication from the storage means, and compares the attribute information received from the newly calling slave station with the read attribute information to determine which slave station has a higher priority. Judge the station. If the determining means determines that the newly calling slave station has a high priority, the calling means disconnects the currently communicating line and calls the telephone indicated by the attribute information of the newly calling slave station. Call the number and connect the line with this slave station.

前記作用に付加した作用として、比較手段は通信が終了
すると、記憶手段に記憶されている属性情報をすべて比
較する。優先順付順発呼手段は前記比較手段の比較結果
に基づいて１番優先順位の高いスレーブ局の電話番号を
前記記憶手段から読み比して、この電話番号先のスレー
ブ局に発呼する３ （実施例） 以下、本発明の一実施例を図面を参照して説明する。第
１図は本発明の端末装置の一実施例を示したブロック図
である。１はホスト局Ｓを構成する端末装置の制御部で
、スレーブ局Ｔとの回線接続制御等を行う。２は発呼、
回線切断及び回線の捕捉、解放等を行う通信制御部、３
はスレーブ局Ｔから送信されるデータの優先度、種別及
びスレーブ局Ｔの電話番号等を示す属性情報を保持する
メモ１ハ４はスレーブ局Ｔとの通信記録等を格納する管
理メモリ、５はスレーブ局Ｔを構成する端末装！の制御
部で、ホスト局との回線接続制御等を行う。６は制御部
５のワーキングメモリ、７は回線の捕捉、解放等を行う
通信制御部、１０はホスト局Ｓとスレーブ局Ｔを接続す
る回線網を示している。As an additional effect to the above-mentioned effect, the comparison means compares all the attribute information stored in the storage means when the communication is completed. The priority order calling means reads and compares the telephone number of the slave station with the highest priority from the storage means based on the comparison result of the comparison means, and calls the slave station at the destination of this telephone number3. (Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a terminal device of the present invention. Reference numeral 1 denotes a control unit of a terminal device constituting the host station S, which performs line connection control with the slave station T, etc. 2 is calling,
Communication control unit that disconnects the line, seizes and releases the line, etc.; 3
Memo 1 holds attribute information indicating the priority and type of data transmitted from the slave station T, the telephone number of the slave station T, etc. 4 is a management memory that stores communication records with the slave station T, 5 is a management memory Terminal equipment that constitutes slave station T! The control unit controls the line connection with the host station. Reference numeral 6 denotes a working memory of the control unit 5, 7 a communication control unit for acquiring and releasing lines, etc., and 10 a line network connecting the host station S and the slave station T.

ここで、制御部５とワーキングメモリ６は作成手段を、
制御部３と通信制御部７は属性情報送信手段及びデータ
送信手段を構成し、通信制御部２と制御部１とメモリ３
は記憶手段を、制御部１は判定手段を、制御部１と通信
制御部２は発呼手段と更に優先順付順発呼手段を構成し
ている。更に、制御部１は比較手段を構成している。Here, the control unit 5 and the working memory 6 use the creation means as
The control unit 3 and the communication control unit 7 constitute attribute information transmission means and data transmission means, and the communication control unit 2, the control unit 1, and the memory 3
is a storage means, the control section 1 is a determining means, and the control section 1 and communication control section 2 are a calling means and a priority order calling means. Furthermore, the control section 1 constitutes a comparison means.

第２図は上記のホスト局とスレーブ局Ｔとを工ＳＤＮ回
線網を介して接続して成る通信システムを示したブロッ
ク図である。１０はＩＳＤＮ回線網、Ｓはホスト局、Ｔ
１−Ｔ１はスレーブ局である。FIG. 2 is a block diagram showing a communication system in which the above-mentioned host station and slave station T are connected via an industrial SDN network. 10 is the ISDN line network, S is the host station, T
1-T1 is a slave station.

次に本実施例の動作について説明する。スレーブ局Ｔ１
〜Ｔ、はＩＳＤＮ回線のＤチャネルを使用してホスト局
Ｓを発呼するが、その際、スレーブ局Ｔの制御部５はワ
ーキングメモリ６を用いて第３図に示すような優先番号
、データの種別及び自己の端末番号（電話番号）から成
る属性情報を作成して、これをホスト局Ｓに前記Ｄチャ
ネルを用いて送信する。尚、制御部５のワーキングメモ
リには属性情報を作成するための優先番号、データの種
別及び自己の端末番号等が予め登録されているものとす
る。ホスト局Ｓの制御部１は通信制御部２を介して受信
される前記属性情報を端末毎にメモリ３に格納する。こ
の際、ホスト局Ｓは他のスレーブ局Ｔと通信を行ってい
ない場合は、発呼のあったスレーブ局との間でＩＳＤＮ
回線網１０のＢチャネルを介して回線閉結して、このス
レーブ局との間で通信を開始する。Next, the operation of this embodiment will be explained. Slave station T1
~T, calls the host station S using the D channel of the ISDN line, but at that time, the control unit 5 of the slave station T uses the working memory 6 to store the priority number and data as shown in FIG. It creates attribute information consisting of the type of terminal and its own terminal number (telephone number), and transmits this to the host station S using the D channel. It is assumed that the priority number, data type, own terminal number, etc. for creating attribute information are registered in advance in the working memory of the control unit 5. The control unit 1 of the host station S stores the attribute information received via the communication control unit 2 in the memory 3 for each terminal. At this time, if the host station S is not communicating with another slave station T, the host station S will use the ISDN
The line is closed via the B channel of the line network 10, and communication with this slave station is started.

今、ホスト局Ｓがスレーブ局Ｔ１とＩＳＤＮ回線網１０
のＢチャネルを介して通信を行っている時に、スレーブ
局Ｔ２はホスト局ＳにＤチャネルを用いて発呼を行い、
第３図に示すような属性情報をホスト局Ｓに送ったとす
る。この場合、ホスト局Ｓの制御部１はスレーブ局Ｔ１
からＩ　ＳＤＮ回線網１０のＤチャネルを介して送られ
てきた前記属性情報をメモリ３に格納して回線接続予約
を行うと共に、メモリ３に格納されているスレーブ局Ｔ
１から現在送られているデータの優先度と、今回発呼し
たスレーブ局Ｔ２が送ってくるデータの優先度とを比較
する。その結果、スレーブ局Ｔ１から送られてくるデー
タの優先度が高い場合にはそのままスレーブ局Ｔ１との
通信を続行し、この通信の終了後、他に優先度の高いス
レーブ局の発呼又は回線予約が無い限り、メモリ３から
スレーブ局Ｔ２の電話番号（端末番号）を読み出して、
これを通信制御部２に与えることにより、ホスト局Ｔ　
からスレーブ局Ｔ２に電話を掛け、回線が接続されると
、スレーブ局Ｔ２の制御部５はデータをＩＳＤＮ回線網
１０のＢチャネルを介してホスト局Ｓに送信する。Now, the host station S is connected to the slave station T1 and the ISDN line network 10.
While communicating via the B channel of the slave station T2, the slave station T2 makes a call to the host station S using the D channel,
Assume that attribute information as shown in FIG. 3 is sent to the host station S. In this case, the control unit 1 of the host station S controls the slave station T1
The attribute information sent from the slave station T via the D channel of the I SDN line network 10 is stored in the memory 3 to make a line connection reservation, and the slave station T stored in the memory 3
The priority of the data currently being sent from T2 is compared with the priority of the data sent from the slave station T2 that has made the call this time. As a result, if the data sent from slave station T1 has a high priority, it continues communication with slave station T1, and after this communication is finished, another slave station with a high priority makes a call or connects the line. Unless there is a reservation, read the telephone number (terminal number) of slave station T2 from memory 3,
By giving this to the communication control unit 2, the host station T
When the slave station T2 is called and the line is connected, the control unit 5 of the slave station T2 transmits data to the host station S via the B channel of the ISDN network 10.

又、現在通信中のスレーブ局Ｔ１が送信しているデータ
の優先度に比較して今回回線接続要求を行ったスレーブ
局Ｔ２が送ってくるデータの優先度の方が高い場合、制
御部１はスレーブ局Ｔ１との回線を切断して、メモリ３
からスレーブ局Ｔ２の電話番号を呼び出し、これを通信
制御部２に与えることによりスレーブ局Ｔ２に電話を掛
ける。In addition, if the priority of the data sent by the slave station T2 that made the line connection request this time is higher than the priority of the data sent by the slave station T1 currently communicating, the control unit 1 After disconnecting the line with slave station T1, memory 3
The telephone number of slave station T2 is called from , and this is given to communication control section 2 to make a call to slave station T2.

制御部１はスレーブ局Ｔ１との回線を切断した際に、ス
レーブ局Ｔ１との通信途中で回線を切断したという情報
を管理メモリ４に書き込んでおく。When the control unit 1 disconnects the line with the slave station T1, it writes in the management memory 4 information that the line was disconnected during communication with the slave station T1.

一方、スレーブ局Ｔ２の制御部ヲはホスト局Ｓとの間で
Ｂチャネルの回線が接続されると、データを通信制御部
７を介してホスト局Ｓに送信する。On the other hand, when the B channel line is connected to the host station S, the control unit of the slave station T2 transmits data to the host station S via the communication control unit 7.

こうして、ホスト局Ｓはスレーブ局Ｔ２との通信が終了
すると、管理メモリ４に格納されている通信管理記録か
らスレーブ局丁、との通信を途中で切断したことを知り
、メモリ３からスレーブ局Ｔ１の電話番号を読み出して
通信制御部２を介してスレーブ局Ｔ２に電話を掛けて再
びこのスレーブ局Ｔ２との通信を開始する。この際、ス
レーブ局Ｔ２の制御部５はホスト局Ｓに送るべきデータ
を最初から送り直す。In this way, when the communication with the slave station T2 is completed, the host station S learns from the communication management record stored in the management memory 4 that the communication with the slave station has been cut midway, and from the memory 3 the host station S learns that the communication with the slave station T1 has been interrupted. , and calls the slave station T2 via the communication control unit 2 to start communication with the slave station T2 again. At this time, the control unit 5 of the slave station T2 resends the data to be sent to the host station S from the beginning.

本実施例によれば、各スレーブ局Ｔ１〜Ｔｎはホスト局
ＳにＤチャネルを用いて発呼する際に属性情報としてデ
ータの優先度を示す情報をホスト局Ｓに送るため、ホス
ト局Ｓは例え他のスレーブ局と通信中であっても、優先
度の高いデータを送りたい旨の発呼を受けると、通信回
線を切断した後、この優先度の高いデータを送るスレー
ブ局にホスト局Ｓ側から発呼して回線を接続して、前記
優先度の高いデータを受信することができる。このため
、スレーブ局Ｔは回線待ちを行って優先度の高いデータ
をなかなかホスト局Ｓに送ることができないというよう
な不都合を解消することができ、ホスト局Ｓは重要なデ
ータをタイムリーに受信することができる。従って、セ
キュリティーシステム等のデータ送受信運用を効率よく
行うことができると共に、不必要な回線接続を極力抑え
ることもできるため、経済的なメリットも得ることがで
きる。According to this embodiment, each slave station T1 to Tn sends information indicating the priority of data as attribute information to the host station S when making a call to the host station S using the D channel. Even if the slave station is communicating with another slave station, if it receives a call requesting to send high-priority data, the host station S will disconnect the communication line and send the high-priority data. The high priority data can be received by making a call from the side and connecting the line. Therefore, it is possible to eliminate the inconvenience that the slave station T waits on the line and is unable to send high-priority data to the host station S, and the host station S can receive important data in a timely manner. can do. Therefore, it is possible to efficiently transmit and receive data in a security system, etc., and it is also possible to suppress unnecessary line connections as much as possible, so that economical benefits can also be obtained.

尚、上記実施例では、通信中に回線を切断されたスレー
ブ局がホスト局にデータを再送する場合、最初からデー
タをホスト局に再送する構成としたが、スレーブ局に回
線が切断されるまで既に送ってしまったデータがどこま
であるかを記憶する手段と、ホスト局に受信データを一
旦記憶しておくバッファ等を設けておけば、再送時、送
れなかった残りのデータのみをホスト局に送るようにす
る二ともて゛きる。In the above embodiment, when a slave station whose line is disconnected during communication retransmits data to the host station, the data is retransmitted to the host station from the beginning. If you provide a means to remember how much data has already been sent and a buffer to temporarily store the received data in the host station, then when retransmitting, only the remaining data that could not be sent will be sent to the host station. I can do both.

〔発明の効果〕〔Effect of the invention〕

以上記述した如く本発明のＩＳＤＮ通信システムによれ
ば、優先度の高いデータを送信しようとしているスレー
ブ局との間の回線を、優先的にホスト局に接続すること
ができる。As described above, according to the ISDN communication system of the present invention, the line between the slave station and the slave station that is about to transmit high-priority data can be connected to the host station preferentially.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明のＩＳＤＮ通信システムで用いられる端
末装置の一実施例を示したブロック図、第２図は第１図
に示した端末装置を用いて構築した本発明のＩＳＤＮ通
信システムの一実施例を示したブロック図、第３図は第
１図および第２図に示したスレーブ局がホスト局に送信
する属性データ例を示した図である。 １．５・・・制御部 ２．７・・・通信制御部 ３・・・メモリ ４・・・管理メモリ ６・・・ワーキングメモリFIG. 1 is a block diagram showing an embodiment of a terminal device used in the ISDN communication system of the present invention, and FIG. 2 is an example of an ISDN communication system of the present invention constructed using the terminal device shown in FIG. FIG. 3, a block diagram showing the embodiment, is a diagram showing an example of attribute data transmitted from the slave station shown in FIGS. 1 and 2 to the host station. 1.5...Control unit 2.7...Communication control unit 3...Memory 4...Management memory 6...Working memory

Claims (2)

【特許請求の範囲】[Claims] （１）ホスト局に複数のスレーブ局をＩＳＤＮ回線を介
して接続して成る通信システムにあって、各局はＩＳＤ
Ｎ回線のＤチャネルを用いて発呼し、ＩＳＤＮ回線のＢ
チャネルを用いてデータを送信するシステムにおいて、
データの優先順位と自己の電話番号情報から成る属性情
報を作成又は設定する作成手段と、ホスト局を発呼して
回線が接続されると、前記作成手段によって作成又は設
定された属性情報を前記Ｄチャネルを介してホスト局に
送信する属性情報送信手段と、ホスト局からの発呼によ
り回線が接続されるとデータを前記Ｄチャネルを介して
ホスト局に送信するデータ送信手段とをスレーブ局側に
設け、スレーブ局から送信されてきた前記属性情報を受
信してこれをスレーブ局毎に区別して記憶する記憶手段
と、通信中のスレーブ局の属性情報を前記記憶手段から
読み出すと共に、新たに発呼してきたスレーブ局から受
信した属性情報と前記読み出した属性情報とを比較して
優先順位が高いスレーブ局を判定する判定手段と、この
判定手段によつて新たに発呼してきたスレーブ局の優先
順位が高いと判定された場合、現在通信中の回線を切断
して新たに発呼してきたスレーブ局の属性情報が示す電
話番号先に発呼して、このスレーブ局との間に回線を接
続する発呼手段とをホスト局側に設けたことを特徴とす
るＩＳＤＮ通信システム。(1) In a communication system in which multiple slave stations are connected to a host station via an ISDN line, each station is
Make a call using the D channel of the N line, and make a call using the B channel of the ISDN line.
In a system that transmits data using a channel,
a creation means for creating or setting attribute information consisting of data priorities and own telephone number information; and when a host station is called and a line is connected, the attribute information created or set by the creation means is transmitted to the host station; Attribute information transmitting means for transmitting to the host station via the D channel, and data transmitting means for transmitting data to the host station via the D channel when the line is connected by a call from the host station, are provided on the slave station side. a storage means for receiving the attribute information transmitted from the slave station and storing it separately for each slave station; and a storage means for reading out the attribute information of the slave station in communication from the storage means and newly issuing a new one. determining means for determining which slave station has a higher priority by comparing the attribute information received from the calling slave station with the read attribute information; and determining the priority of the newly calling slave station by this determining means. If it is determined that the ranking is high, the currently communicating line is disconnected, a new call is made to the telephone number indicated by the attribute information of the slave station making the call, and the line is connected to this slave station. 1. An ISDN communication system characterized in that a host station is provided with a calling means for calling. （２）通信が終了すると、記憶手段に記憶されている属
性情報を全て比較する比較手段と、この比較手段の比較
結果に基づいて１番優先順位の高いスレーブ局の電話番
号を前記記憶手段から読み出して、この電話番号先のス
レーブ局に発呼する優先順位順発呼手段を設けたことを
特徴とする請求項（１）記載のＩＳＤＮ通信システム。(2) When the communication is completed, a comparison means compares all the attribute information stored in the storage means, and based on the comparison result of this comparison means, the telephone number of the slave station with the highest priority is stored from the storage means. 2. The ISDN communication system according to claim 1, further comprising priority order calling means for reading out the telephone number and calling the slave station at the destination of the telephone number.
JP2036356A 1990-02-19 1990-02-19 Isdn communication system Pending JPH03240341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2036356A JPH03240341A (en) 1990-02-19 1990-02-19 Isdn communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2036356A JPH03240341A (en) 1990-02-19 1990-02-19 Isdn communication system

Publications (1)

Publication Number Publication Date
JPH03240341A true JPH03240341A (en) 1991-10-25

Family

ID=12467553

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2036356A Pending JPH03240341A (en) 1990-02-19 1990-02-19 Isdn communication system

Country Status (1)

Country Link
JP (1) JPH03240341A (en)

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