WO2022269812A1 - Subscriber housing device, subscriber housing method, and subscriber housing program - Google Patents

Subscriber housing device, subscriber housing method, and subscriber housing program Download PDF

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Publication number
WO2022269812A1
WO2022269812A1 PCT/JP2021/023821 JP2021023821W WO2022269812A1 WO 2022269812 A1 WO2022269812 A1 WO 2022269812A1 JP 2021023821 W JP2021023821 W JP 2021023821W WO 2022269812 A1 WO2022269812 A1 WO 2022269812A1
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Prior art keywords
terminal
subscriber
connection
switch
circuit
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PCT/JP2021/023821
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French (fr)
Japanese (ja)
Inventor
教之 佐藤
貴行 古屋
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日本電信電話株式会社
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Priority to PCT/JP2021/023821 priority Critical patent/WO2022269812A1/en
Publication of WO2022269812A1 publication Critical patent/WO2022269812A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite

Definitions

  • the present invention relates to a subscriber accommodation device, a subscriber accommodation method, and a subscriber accommodation program.
  • FIG. 8 is a sequence diagram showing switching connection operation of a subscriber telephone. This sequence diagram is described as Figure 3.4.1 in Non-Patent Document 1.
  • the subscriber circuit SLICz receives a call signal off-hook (S11) from the idle terminal T1z, sends a dial tone (S12) to the terminal T1z, and waits for dial reception. Off-hook refers to the state in which the handset is picked up.
  • the subscriber circuit SLICz When the subscriber circuit SLICz receives the selection signal (S13) dialed by DP/PB (Dial Pulse/Push Button) from the terminal T1z, the subscriber circuit SLICz sends a ringing tone (S14) to the terminal T1z and a ringing signal (S14 ) to perform path connection processing. When the subscriber circuit SLICz detects the response signal (S15) from the terminal T2z, the subscriber circuit SLICz transfers the response signal (S15d) to the terminal T1z, thereby starting a call and billing between the terminals T1z and T2z.
  • S13 selection signal dialed by DP/PB (Dial Pulse/Push Button
  • the subscriber circuit SLICz When the originating side (terminal T1z) is disconnected, the subscriber circuit SLICz detects an on-hook (S16), which is a disconnection signal, from the terminal T1z. On-hook indicates a state in which the receiver is hung up. The subscriber circuit SLICz stops charging, disconnects the path, and returns the terminal T1z to the initial state (idle state). Then, the subscriber circuit SLICz transfers the disconnection signal (S16d) to the terminal T2z, sends out a busy tone (S17), and detects the on-hook (S18) of the end-of-call signal from the terminal T2z.
  • S16d disconnection signal
  • the subscriber circuit SLICz When the called party (terminal T2z) is disconnected, the subscriber circuit SLICz detects the on-hook (S18) of the end-of-call signal from the terminal T2z. The subscriber circuit SLICz stops charging, disconnects the path, sends a busy tone (S17) to the terminal T1z, and detects the on-hook (S16) of the end-of-call signal from the terminal T1z.
  • dial-in services With dial-in services, one contracted line is shared by multiple terminals, and each terminal is assigned an individual additional number. It is what makes As a result, the number of contracted lines is less than the actual number of terminals, so the cost can be reduced.
  • the state of each terminal used in the dial-in service changes depending on the time zone, such as an idle state waiting for an incoming call, a use state during a call, and a closed state stopping the dial-in function.
  • Non-Patent Document 1 a detection-enabled type that can detect the blocked state of the terminals it accommodates
  • Non-Patent Documents 2 and 3 a non-detection-enabled type that cannot detect the blocked state.
  • FIG. 9 is a configuration diagram of a detection-enabled dial-in service.
  • the subscriber accommodation device Sz has a subscriber circuit SLICz and a control unit Caz.
  • a telephone TTz is accommodated in the terminal T2z.
  • the switch Tswz in the terminal is set to the stop side (upper side).
  • terminal T2z ⁇ subscriber line TLz ⁇ subscriber line SLz ⁇ subscriber circuit SLICz are connected.
  • the subscriber line TLz is a pair of lines TL1z and TL2z
  • the subscriber line SLz is a pair of lines SL1z and SL2z.
  • the internal terminal switch Tswz is switched to the transmission side (lower side). This connects the line TL2z to ground so that the subscriber circuit SLICz can detect the ground transmission from the terminal T2z (Section 4.1.5 of Non-Patent Document 1).
  • the control unit Caz transfers the call connection originated to the terminal T2z in the blocked state to an alternative line (not shown) for the blocked state.
  • Non-Patent Documents 2 and 3 are already in widespread use. Therefore, in order to provide a dial-in service, it is necessary to replace the existing non-detection type exchange with a detection type exchange, and the equipment cost is a burden.
  • the main object of the present invention is to realize a dial-in service corresponding to the blocked state of the terminal at low cost.
  • the subscriber accommodation device of the present invention has the following features.
  • the present invention is a subscriber accommodation apparatus having a ground detection circuit connected to a terminal via a subscriber line and a subscriber circuit for relaying communication of the terminal to be accommodated,
  • the ground detection circuit monitors the terminal, and when it detects that the ground is sent from the blocked terminal via the subscriber line, it outputs a signal for connection to the blocked terminal.
  • the subscriber circuit is instructed to switch to an alternative line.
  • FIG. 1 is a configuration diagram of a subscriber telephone system in a blocked state according to the present embodiment
  • FIG. 1 is a configuration diagram of a subscriber telephone system in use according to the present embodiment
  • FIG. 1 is a configuration diagram of a subscriber telephone system when switching switches from a control unit according to the present embodiment
  • FIG. 1 is a configuration diagram of a subscriber telephone system when switching switches from a detection unit according to the present embodiment
  • FIG. 1 is a configuration diagram of a subscriber telephone system when a call is made from a terminal according to this embodiment
  • FIG. 1 is a configuration diagram of a subscriber telephone system in which terminals dedicated to incoming calls according to the present embodiment are accommodated
  • FIG. 2 is a hardware configuration diagram of a subscriber accommodation device according to the present embodiment
  • FIG. FIG. 4 is a sequence diagram showing exchange connection operation of a subscriber telephone
  • 1 is a configuration diagram of a detection-enabled dial-in service
  • FIG. 1 is a configuration diagram of a subscriber telephone system in a blocked state.
  • the subscriber telephone system mainly has a terminal T1 on the calling side, a terminal T2 on the receiving side, and a subscriber accommodation device S.
  • the subscriber accommodation device S controls a subscriber circuit SLIC1 accommodating the terminal T1, a subscriber circuit SLIC2 accommodating the terminal T2, and a ground detection circuit G for detecting the ground transmission state of the terminal T2. and a switch SW.
  • the subscriber accommodation device S has subscriber lines TL, DL, and SL for connecting components.
  • the subscriber line TL is a pair of lines TL1 and TL2
  • the subscriber line DL is a pair of lines DL1 and DL2
  • the subscriber line SL is a pair of lines SL1 and SL2.
  • the subscriber circuit SLIC1 receives the dial (S13 in FIG. 8) from the terminal T1, relays it to the subscriber circuit SLIC2, and causes the subscriber circuit SLIC2 to send a call signal (S14) to the terminal T2.
  • the subscriber circuit SLIC2 receives the response signal (S15) from the terminal T2, relays it to the subscriber circuit SLIC1, and causes the subscriber circuit SLIC1 to transmit the response signal (S15d) to the terminal T2.
  • a call between terminal T1 and terminal T2 is started.
  • the subscriber circuits SLIC1 and SLIC2 do not have the function of detecting the state of transmission to the ground from the terminal T2. Instead, a ground detection circuit G is newly provided in the subscriber accommodation device S. Ground detection circuit G is connected to terminal T2 via subscriber lines TL and DL. The earth detection circuit G monitors the terminal T2, and detects that the earth is sent from the blocked terminal T2 to the subscriber line TL2 on the side of the subscriber line TL that supplies the DC power (terminal (the sending side of the inner switch Tsw) is detected. As a result, the existing subscriber circuits SLIC1 and SLIC2, which do not have the function of detecting the state of transmission to the ground, can be used to implement a dial-in service at a low cost.
  • the blockage state of terminal T2 refers to a "nighttime blockage state” in which the user of terminal T2 (receptionist for call center operations) does not use terminal T2 outside of business hours (nighttime), or a failure of terminal T2.
  • a “failure blockage state” during a period when the terminal T2 cannot be used by the user is exemplified.
  • the terminal switch Tsw is connected to the lower side from which the earth is sent, so the terminal T2 is closed.
  • FIG. 6 which will be described later, the switch Tsw in the terminal is connected to the upper side where the transmission of the earth is stopped, so the terminal T2 is in an idle state.
  • FIG. 2 is a block diagram of the subscriber telephone system in use.
  • the switch SW reflects the state of the terminal T2 in the subscriber accommodation device S by switching between the following two connections (lower side connection, upper side connection).
  • connection signal for terminal T2 is, for example, a call signal from terminal T1 (S14) or a call signal from terminal T2 (S11).
  • the earth detection circuit G When the earth detection circuit G detects that the earth is sent from the terminal T2 of the first connection, the earth detection circuit G notifies the controller Ca of the subscriber accommodation unit S of the earth send state (signal indicated by the wavy line arrow). GL).
  • the control unit Ca receives the ground transmission state of the terminal T2, and instructs each subscriber to switch the partner of connection processing with other terminals such as the terminal T1 from the terminal T2 to an alternative line (not shown) for the blocked state. It controls the circuits SLIC1,2. In other words, an instruction (signal GL) to switch to the alternative line for the blocked state is notified from the ground detection circuit G to each of the subscriber circuits SLIC1 and 2 via the control unit Ca.
  • the switch SW switches the idle state terminal T2 to the use state by switching from the lower connection to the upper connection in the following (Case 1) or (Case 2).
  • (Case 1) When the subscriber accommodation device S (subscriber circuit SLIC2) detects a calling signal (S14) for receiving a call to the terminal T2.
  • (Case 2) When the ground detection circuit G detects loop closure (DC circuit closed state) of the subscriber lines DL and TL by off-hooking (S11) for originating from the terminal T2.
  • the switch SW switches from the upper side connection to the lower side connection, thereby transitioning the used terminal T2 to the idle state.
  • the subscriber circuit SLIC2 is opened, and the terminal T2 and the ground detection circuit G are connected again.
  • FIG. 3 is a block diagram of the subscriber telephone system when switching the switch SW from the control unit Ca.
  • the control unit Ca detects the usage state of the terminal T2 (the calling signal from the terminal T1 (S14) and the calling signal from the terminal T2 (S11)).
  • the control unit Ca transmits a signal CL to the switch SW to switch the switch SW from the lower connection to the upper connection (connection to the subscriber circuit SLIC2) (state shown in FIG. 3).
  • the control unit Ca detects the call disconnection state of the terminal T2 (when the caller is disconnected or when the caller is disconnected in FIG. 8), and switches the switch SW from the upper connection to the lower connection (connection to the earth detection circuit G). ) to the switch SW.
  • the switching control function of the switch SW provided in the control unit Ca can be diverted without separately preparing a component for switching the switch SW, thereby reducing the cost.
  • FIG. 4 is a block diagram of the subscriber telephone system when switching the switch SW from the detector Ds.
  • the detector Ds is provided on a pair of subscriber lines SL connecting between the subscriber circuit SLIC and the switch SW.
  • the state of the subscriber circuit SLIC2 changes, and the subscriber line SL state also changes.
  • the state of the subscriber line SL (combination of voltage and current states) is associated with the state of the terminal T2.
  • the terminal T2 When the subscriber line SL1 is in the earth sending state and the subscriber line SL2 is in the battery sending state (a state in which a voltage of -42 to -53 V is sent), the terminal T2 is made idle. When the subscriber line SL1 is not in the ground transmission state or the subscriber line SL2 is not in the battery transmission state, the terminal T2 is set to the use state.
  • the detection unit Ds which has detected the change from the idle state to the used state of the terminal T2, transmits to the switch SW a signal BL for switching the switch SW from the lower side connection to the upper side connection (connection to the subscriber circuit SLIC2). (state shown in FIG. 4).
  • the detection unit Ds detects a change to the idle state due to the call disconnection state of the terminal T2 (at the time of disconnection of the calling side or at the time of disconnection of the receiving side in FIG. 8), the detection unit Ds switches the switch SW from the upper connection to the lower connection (earth detection). connection to circuit G).
  • the existing control unit Ca which does not have a switching control function for the switch SW, can be reused, and only by newly adding the detection unit Ds to the subscriber accommodation device S, the subscriber accommodation device can be installed at an early stage. S can support dial-in service.
  • FIG. 5 is a block diagram of a subscriber telephone system when a call is originated from terminal T2.
  • a ground detection circuit G monitors the subscriber line DL connected to the terminal T2 via the switch SW. When the ground detection circuit G detects that the subscriber lines TL and DL are in the DC circuit closed state by the call signal (S11) from the terminal T2, it notifies the controller Ca of the fact as a signal GL.
  • the control unit Ca notifies the switch SW of a signal CL for switching from the lower connection to the upper connection (state shown in FIG. 5).
  • the power supply circuit B2 in the ground detection circuit G has functions and characteristics equivalent to those of the subscriber circuit SLIC2. , feed the terminal T2.
  • the detector D detects that the same current flows through the subscriber line DL1 and the subscriber line DL2 (DC circuit closed state), it detects the calling signal (S11) from the terminal T2. To detect.
  • FIG. 6 is a block diagram of a subscriber telephone system in which a terminal T2 dedicated to incoming calls is accommodated.
  • a terminal T2 dedicated to incoming calls is accommodated.
  • Such a reception-only terminal that cannot transmit a calling signal from itself is used, for example, as a terminal of an alternative line (switching destination) for the blocked state described with reference to FIG.
  • a ground detection circuit G monitors the subscriber line DL connected to the terminal T2 via the switch SW. When the ground detection circuit G detects that the subscriber lines TL and DL are in the DC circuit closed state due to the calling signal (S11) from the terminal T2, it emits a signal (for example, a busy tone) warning that the call cannot be made. signal) from the signal source To to the terminal T2. As a result, the user of the terminal T2 notices that he has erroneously attempted to make a call from the incoming-only terminal T2.
  • the power supply circuit B2 in the ground detection circuit G has a function equivalent to that of the subscriber circuit SLIC2. - Powering terminal T2 by having the property.
  • the detector D detects that the same current flows through the subscriber line DL1 and the subscriber line DL2 (DC circuit closed state), it detects the calling signal (S11) from the terminal T2. To detect.
  • FIG. 7 is a hardware configuration diagram of the subscriber accommodation device S.
  • the subscriber accommodation device S is configured as a computer 900 having a CPU 901 , a RAM 902 , a ROM 903 , an HDD 904 , a communication I/F 905 , an input/output I/F 906 and a media I/F 907 .
  • Communication I/F 905 is connected to an external communication device 915 .
  • Input/output I/F 906 is connected to input/output device 916 .
  • a media I/F 907 reads and writes data from a recording medium 917 .
  • the CPU 901 controls each processing unit by executing a program (also called an application or an app for short) read into the RAM 902 . This program can be distributed via a communication line or recorded on a recording medium 917 such as a CD-ROM for distribution.
  • the present invention is a subscriber accommodation apparatus S having a ground detection circuit G connected to a terminal T2 via a subscriber line TL, and a subscriber circuit SLIC for relaying communication of the terminal T2 to be accommodated,
  • a ground detection circuit G monitors the terminal T2, and when it detects that the ground is sent from the blocked terminal T2 via the subscriber line TL, it outputs a signal for connection to the terminal T2 for the blocked state. It is characterized by instructing the subscriber circuit SLIC to switch to an alternative line.
  • the ground detection circuit G can handle the blocked state of the dial-in service. Service provision cost can be reduced.
  • the ground detection function of the ground detection circuit G is applied to the number information transmission function (dial-in) service.
  • the ground detection function of the ground detection circuit G may be applied to another service.
  • the subscriber accommodation device S has a switch SW for switching between a first connection between the terminal T2 and the ground detection circuit G and a second connection between the terminal T2 and the subscriber circuit SLIC. and when the switch SW is in the first connection, monitoring that the terminal T2 in the idle state transitions to the blocked state; When the switch SW is in the second connection, the connection signal of the terminal T2 is relayed to the subscriber circuit SLIC so that the terminal T2 is put into use.
  • the subscriber accommodation device S further has a control unit Ca for controlling the subscriber circuit SLIC,
  • the control unit Ca detects the connection signal of the terminal T2, it switches the switch SW from the first connection to the second connection. 1 connection.
  • the subscriber accommodation device S further has a detector Ds on a pair of subscriber lines SL connecting between the subscriber circuit SLIC and the switch SW,
  • the detection unit Ds detects a combination of the voltage and current states indicating the connection signal of the terminal T2 from the pair of subscriber lines SL
  • the switch SW is switched from the first connection to the second connection, and the terminal T2 in use state is switched. It is characterized in that the switch SW is switched from the second connection to the first connection when a combination of voltage and current states indicating a call disconnection state is detected.
  • the control unit Ca that does not have the function of switching the connection of the switch SW can be utilized as it is.
  • the switch SW when the ground detection circuit G detects a call signal from the terminal T2 by supplying power to the terminal T2, the switch SW is switched from the first connection to the second connection to detect the call signal from the terminal T2. It is characterized by notifying the subscriber circuit SLIC.
  • terminal T2 can be used as a calling terminal.
  • the terminal T2 is a receiving terminal that cannot transmit a calling signal from itself
  • the subscriber accommodation device S further has a signal source To,
  • the ground detection circuit G detects a calling signal from the terminal T2 by supplying power to the terminal T2, it causes the signal source To to send a busy tone signal warning that the call cannot be made to the terminal T2. do.
  • terminal T2 can be used as a dedicated terminal for incoming calls.

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  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Telephonic Communication Services (AREA)

Abstract

A subscriber housing device (S) includes: a ground detection circuit (G) which is connected to a terminal (T2) via a subscriber line (TL); and a subscriber circuit (SLIC2) which relays communications of the housed terminal (T2). The ground detection circuit (G) monitors the terminal (T2) and instructs the subscriber circuit (SLIC2) to switch a signal connecting to the terminal (T2) to an alternative line for a blocked state upon detection of a transmission, via the subscriber line (TL), of a ground signal from the terminal (T2) which is in a blocked state.

Description

加入者収容装置、加入者収容方法、および、加入者収容プログラムSubscriber accommodation device, subscriber accommodation method, and subscriber accommodation program
　本発明は、加入者収容装置、加入者収容方法、および、加入者収容プログラムに関する。 The present invention relates to a subscriber accommodation device, a subscriber accommodation method, and a subscriber accommodation program.
　公衆交換電話網（PSTN：Public Switched Telephone Network）では、電話機どうしの呼接続を中継するために、交換機が用いられる（非特許文献１，２，３）。
　図８は、加入電話の交換接続動作を示すシーケンス図である。このシーケンス図は、非特許文献１の図3.4.1として記載されている。
　加入者回路ＳＬＩＣｚは、空き状態の端末Ｔ１ｚから発呼信号のオフフック（Ｓ１１）を受け、発信音（Ｓ１２）を端末Ｔ１ｚに送出して、ダイヤル受信待ちとする。オフフックとは、受話器を取り上げた状態を示す。
　加入者回路ＳＬＩＣｚは、端末Ｔ１ｚからDP/PB（Dial Pulse／Push Button）でダイヤルした選択信号（Ｓ１３）を受信すると、端末Ｔ１ｚに呼出音（Ｓ１４）を送出し、端末Ｔ２ｚに呼出信号（Ｓ１４）を送出することで、パス接続処理を行う。
　加入者回路ＳＬＩＣｚは、端末Ｔ２ｚから応答信号（Ｓ１５）を検出すると、端末Ｔ１ｚに応答信号（Ｓ１５ｄ）を転送することで、端末Ｔ１ｚと端末Ｔ２ｚとの間の通話と課金とを開始する。 In a public switched telephone network (PSTN), exchanges are used to relay call connections between telephones (Non-Patent Documents 1, 2, 3).
FIG. 8 is a sequence diagram showing switching connection operation of a subscriber telephone. This sequence diagram is described as Figure 3.4.1 in Non-Patent Document 1.
The subscriber circuit SLICz receives a call signal off-hook (S11) from the idle terminal T1z, sends a dial tone (S12) to the terminal T1z, and waits for dial reception. Off-hook refers to the state in which the handset is picked up.
When the subscriber circuit SLICz receives the selection signal (S13) dialed by DP/PB (Dial Pulse/Push Button) from the terminal T1z, the subscriber circuit SLICz sends a ringing tone (S14) to the terminal T1z and a ringing signal (S14 ) to perform path connection processing.
When the subscriber circuit SLICz detects the response signal (S15) from the terminal T2z, the subscriber circuit SLICz transfers the response signal (S15d) to the terminal T1z, thereby starting a call and billing between the terminals T1z and T2z.
　発信側（端末Ｔ１ｚ）の切断時には、加入者回路ＳＬＩＣｚは、端末Ｔ１ｚから切断信号であるオンフック（Ｓ１６）を検出する。オンフックとは、受話器を置いた状態を示す。
　加入者回路ＳＬＩＣｚは、課金を停止し、パスを切断し、端末Ｔ１ｚを初期状態（空き状態）に戻す。そして、加入者回路ＳＬＩＣｚは、切断信号（Ｓ１６ｄ）を端末Ｔ２ｚに転送し、話中音（Ｓ１７）を送出し、端末Ｔ２ｚからの終話信号のオンフック（Ｓ１８）を検出する。 When the originating side (terminal T1z) is disconnected, the subscriber circuit SLICz detects an on-hook (S16), which is a disconnection signal, from the terminal T1z. On-hook indicates a state in which the receiver is hung up.
The subscriber circuit SLICz stops charging, disconnects the path, and returns the terminal T1z to the initial state (idle state). Then, the subscriber circuit SLICz transfers the disconnection signal (S16d) to the terminal T2z, sends out a busy tone (S17), and detects the on-hook (S18) of the end-of-call signal from the terminal T2z.
　着信側（端末Ｔ２ｚ）の切断時には、加入者回路ＳＬＩＣｚは、端末Ｔ２ｚからの終話信号のオンフック（Ｓ１８）を検出する。加入者回路ＳＬＩＣｚは、課金を停止し、パスを切断し、話中音（Ｓ１７）を端末Ｔ１ｚに送出し、端末Ｔ１ｚからの終話信号のオンフック（Ｓ１６）を検出する。 When the called party (terminal T2z) is disconnected, the subscriber circuit SLICz detects the on-hook (S18) of the end-of-call signal from the terminal T2z. The subscriber circuit SLICz stops charging, disconnects the path, sends a busy tone (S17) to the terminal T1z, and detects the on-hook (S16) of the end-of-call signal from the terminal T1z.
　ダイヤルインサービスは、１つの契約回線を複数の端末で共有しつつ、各端末には個別の追加番号を付与し、相手がその追加番号を指定して発呼することで、特定の端末に着信させるものである。これにより、実際の端末数よりも少ない契約回線数で済むので、コストを削減できる。
　ダイヤルインサービスで使用する各端末の状態は、着信待ちの空き状態と、通話中の使用状態と、ダイヤルイン機能を停止させる閉塞状態とが時間帯に応じて変化する。 With dial-in services, one contracted line is shared by multiple terminals, and each terminal is assigned an individual additional number. It is what makes As a result, the number of contracted lines is less than the actual number of terminals, so the cost can be reduced.
The state of each terminal used in the dial-in service changes depending on the time zone, such as an idle state waiting for an incoming call, a use state during a call, and a closed state stopping the dial-in function.
　例えば、端末を扱う従業員が夜間（勤務時間外）のために外出したときには、従業員が端末に応答できないので、あらかじめ閉塞状態のうちの夜間閉塞状態を端末に設定しておく。一方、端末に故障が発生したときには、閉塞状態のうちの故障閉塞状態にしておく。
　交換機は、自身で収容する端末の閉塞状態を検知できる検知対応型（非特許文献１）と、閉塞状態を検知できない検知非対応型（非特許文献２，３）とに分類される。 For example, when an employee who handles the terminal goes out at night (outside working hours), the employee cannot respond to the terminal. On the other hand, when a failure occurs in a terminal, it is placed in the failure blocking state among the blocking states.
Switches are classified into a detection-enabled type (Non-Patent Document 1) that can detect the blocked state of the terminals it accommodates, and a non-detection-enabled type (Non-Patent Documents 2 and 3) that cannot detect the blocked state.
　図９は、検知対応型のダイヤルインサービスの構成図である。
　加入者収容装置Ｓｚは、加入者回路ＳＬＩＣｚと、制御部Ｃａｚとを有する。端末Ｔ２ｚには、電話機ＴＴｚが収容されている。
　電話機ＴＴｚが空き状態または使用状態のときには、図９で示すように、端末内スイッチＴｓｗｚを停止側（上側）にする。これにより、端末Ｔ２ｚ→加入者線ＴＬｚ→加入者線ＳＬｚ→加入者回路ＳＬＩＣｚが接続される。
　なお、加入者線ＴＬｚは一対の線ＴＬ１ｚ，ＴＬ２ｚであり、加入者線ＳＬｚは一対の線ＳＬ１ｚ，ＳＬ２ｚである。 FIG. 9 is a configuration diagram of a detection-enabled dial-in service.
The subscriber accommodation device Sz has a subscriber circuit SLICz and a control unit Caz. A telephone TTz is accommodated in the terminal T2z.
When the telephone TTz is idle or in use, as shown in FIG. 9, the switch Tswz in the terminal is set to the stop side (upper side). Thus, terminal T2z→subscriber line TLz→subscriber line SLz→subscriber circuit SLICz are connected.
The subscriber line TLz is a pair of lines TL1z and TL2z, and the subscriber line SLz is a pair of lines SL1z and SL2z.
　一方、電話機ＴＴｚが閉塞状態のときには、端末内スイッチＴｓｗｚを送出側（下側）に切り替える。これにより、線ＴＬ２ｚがアースに接続され、加入者回路ＳＬＩＣｚは、端末Ｔ２ｚからの地気送出を検知できる（非特許文献１の4.1.5節）。制御部Ｃａｚは、閉塞状態の端末Ｔ２ｚに向けて発呼された呼接続を、閉塞状態用の代替回線（図示省略）に転送する。 On the other hand, when the telephone TTz is in a blocked state, the internal terminal switch Tswz is switched to the transmission side (lower side). This connects the line TL2z to ground so that the subscriber circuit SLICz can detect the ground transmission from the terminal T2z (Section 4.1.5 of Non-Patent Document 1). The control unit Caz transfers the call connection originated to the terminal T2z in the blocked state to an alternative line (not shown) for the blocked state.
　このように、検知対応型の交換機を用いることで、端末Ｔ２ｚからの地気送出を検知できる。一方、非特許文献２，３などの検知非対応型の交換機もすでに多く普及している。
　よって、ダイヤルインサービスを提供するには、既存の検知非対応型の交換機を、検知対応型の交換機への置き換える必要があり、その設備コストが負担となっていた。 In this way, by using a detection-enabled exchange, it is possible to detect the transmission from the terminal T2z to the ground. On the other hand, many switchboards that do not support detection, such as Non-Patent Documents 2 and 3, are already in widespread use.
Therefore, in order to provide a dial-in service, it is necessary to replace the existing non-detection type exchange with a detection type exchange, and the equipment cost is a burden.
　そこで、本発明は、端末の閉塞状態に対応したダイヤルインサービスを低コストで実現することを主な課題とする。 Therefore, the main object of the present invention is to realize a dial-in service corresponding to the blocked state of the terminal at low cost.
　前記課題を解決するために、本発明の加入者収容装置は、以下の特徴を有する。
　本発明は、加入者線を介して端末と接続される地気検出回路と、収容する前記端末の通信を中継する加入者回路とを有する加入者収容装置であって、
　前記地気検出回路が、前記端末を監視しており、閉塞状態の前記端末から前記加入者線を介して地気が送出されたことを検出すると、前記端末と接続する信号を閉塞状態用の代替回線に切り替えるように、前記加入者回路に指示することを特徴とする。 In order to solve the above problems, the subscriber accommodation device of the present invention has the following features.
The present invention is a subscriber accommodation apparatus having a ground detection circuit connected to a terminal via a subscriber line and a subscriber circuit for relaying communication of the terminal to be accommodated,
The ground detection circuit monitors the terminal, and when it detects that the ground is sent from the blocked terminal via the subscriber line, it outputs a signal for connection to the blocked terminal. The subscriber circuit is instructed to switch to an alternative line.
　本発明によれば、端末の閉塞状態に対応したダイヤルインサービスを低コストで実現することができる。 According to the present invention, it is possible to realize a dial-in service corresponding to a blocked state of a terminal at low cost.
本実施形態に係わる閉塞状態の加入電話システムの構成図である。1 is a configuration diagram of a subscriber telephone system in a blocked state according to the present embodiment; FIG. 本実施形態に係わる使用状態の加入電話システムの構成図である。1 is a configuration diagram of a subscriber telephone system in use according to the present embodiment; FIG. 本実施形態に係わる制御部からスイッチを切り替えるときの加入電話システムの構成図である。1 is a configuration diagram of a subscriber telephone system when switching switches from a control unit according to the present embodiment; FIG. 本実施形態に係わる検出部からスイッチを切り替えるときの加入電話システムの構成図である。1 is a configuration diagram of a subscriber telephone system when switching switches from a detection unit according to the present embodiment; FIG. 本実施形態に係わる端末から発信する場合の加入電話システムの構成図である。1 is a configuration diagram of a subscriber telephone system when a call is made from a terminal according to this embodiment; FIG. 本実施形態に係わる着信専用の端末が収容される加入電話システムの構成図である。1 is a configuration diagram of a subscriber telephone system in which terminals dedicated to incoming calls according to the present embodiment are accommodated; FIG. 本実施形態に係わる加入者収容装置のハードウェア構成図である。2 is a hardware configuration diagram of a subscriber accommodation device according to the present embodiment; FIG. 加入電話の交換接続動作を示すシーケンス図である。FIG. 4 is a sequence diagram showing exchange connection operation of a subscriber telephone; 検知対応型のダイヤルインサービスの構成図である。1 is a configuration diagram of a detection-enabled dial-in service; FIG.
　以下、本発明の一実施形態について、図面を参照して詳細に説明する。 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.
　図１は、閉塞状態の加入電話システムの構成図である。
　加入電話システムは、主に発信側の端末Ｔ１と、主に着信側の端末Ｔ２と、加入者収容装置Ｓとを有する。
　加入者収容装置Ｓは、端末Ｔ１を収容する加入者回路ＳＬＩＣ１と、端末Ｔ２を収容する加入者回路ＳＬＩＣ２と、端末Ｔ２の地気送出状態を検出する地気検出回路Ｇと、各回路を制御する制御部Ｃａと、スイッチＳＷとを有する。
　また、加入者収容装置Ｓは、部品同士を接続する加入者線ＴＬ，ＤＬ，ＳＬを有する。なお、加入者線ＴＬは一対の線ＴＬ１，ＴＬ２であり、加入者線ＤＬは一対の線ＤＬ１，ＤＬ２であり、加入者線ＳＬは一対の線ＳＬ１，ＳＬ２である。 FIG. 1 is a configuration diagram of a subscriber telephone system in a blocked state.
The subscriber telephone system mainly has a terminal T1 on the calling side, a terminal T2 on the receiving side, and a subscriber accommodation device S. As shown in FIG.
The subscriber accommodation device S controls a subscriber circuit SLIC1 accommodating the terminal T1, a subscriber circuit SLIC2 accommodating the terminal T2, and a ground detection circuit G for detecting the ground transmission state of the terminal T2. and a switch SW.
In addition, the subscriber accommodation device S has subscriber lines TL, DL, and SL for connecting components. The subscriber line TL is a pair of lines TL1 and TL2, the subscriber line DL is a pair of lines DL1 and DL2, and the subscriber line SL is a pair of lines SL1 and SL2.
　加入者回路ＳＬＩＣ１は、端末Ｔ１からのダイヤル（図８のＳ１３）を受けて加入者回路ＳＬＩＣ２に中継し、加入者回路ＳＬＩＣ２から呼出信号（Ｓ１４）を端末Ｔ２に送出させる。加入者回路ＳＬＩＣ２は、端末Ｔ２からの応答信号（Ｓ１５）を受けて加入者回路ＳＬＩＣ１に中継し、加入者回路ＳＬＩＣ１から応答信号（Ｓ１５ｄ）を端末Ｔ２に送出させる。これにより、端末Ｔ１と端末Ｔ２との通話が開始される。 The subscriber circuit SLIC1 receives the dial (S13 in FIG. 8) from the terminal T1, relays it to the subscriber circuit SLIC2, and causes the subscriber circuit SLIC2 to send a call signal (S14) to the terminal T2. The subscriber circuit SLIC2 receives the response signal (S15) from the terminal T2, relays it to the subscriber circuit SLIC1, and causes the subscriber circuit SLIC1 to transmit the response signal (S15d) to the terminal T2. As a result, a call between terminal T1 and terminal T2 is started.
　ここで、加入者回路ＳＬＩＣ１，ＳＬＩＣ２は、それぞれ自身では端末Ｔ２からの地気送出状態を検知する機能を持たない構成である。その代わりに、加入者収容装置Ｓ内に地気検出回路Ｇを新たに設ける。
　地気検出回路Ｇは、加入者線ＴＬ、ＤＬを介して端末Ｔ２と接続されている。地気検出回路Ｇは、端末Ｔ２を監視しており、加入者線ＴＬのうちの直流電源を供給する側の加入者線ＴＬ２に、閉塞状態の端末Ｔ２から地気が送出されたこと（端末内スイッチＴｓｗの送出側）を検出する。
　これにより、地気送出状態を検知する機能を持たない既存の加入者回路ＳＬＩＣ１，ＳＬＩＣ２を流用し、低コストでダイヤルインサービスを実現できる。 Here, the subscriber circuits SLIC1 and SLIC2 do not have the function of detecting the state of transmission to the ground from the terminal T2. Instead, a ground detection circuit G is newly provided in the subscriber accommodation device S.
Ground detection circuit G is connected to terminal T2 via subscriber lines TL and DL. The earth detection circuit G monitors the terminal T2, and detects that the earth is sent from the blocked terminal T2 to the subscriber line TL2 on the side of the subscriber line TL that supplies the DC power (terminal (the sending side of the inner switch Tsw) is detected.
As a result, the existing subscriber circuits SLIC1 and SLIC2, which do not have the function of detecting the state of transmission to the ground, can be used to implement a dial-in service at a low cost.
　端末Ｔ２の閉塞状態とは、端末Ｔ２の利用者（コールセンター業務の受付係）が営業時間外（夜間）で端末Ｔ２を利用しない時間帯における「夜間閉塞状態」や、端末Ｔ２の故障により、利用者が端末Ｔ２を利用できない時間帯における「故障閉塞状態」などが例示される。
　なお、図１では端末内スイッチＴｓｗが地気を送出する下側に接続されているので、端末Ｔ２は閉塞状態である。一方、後記する図６では端末内スイッチＴｓｗが地気の送出を停止する上側に接続されているので、端末Ｔ２は空き状態である。 The blockage state of terminal T2 refers to a "nighttime blockage state" in which the user of terminal T2 (receptionist for call center operations) does not use terminal T2 outside of business hours (nighttime), or a failure of terminal T2. A “failure blockage state” during a period when the terminal T2 cannot be used by the user is exemplified.
In FIG. 1, the terminal switch Tsw is connected to the lower side from which the earth is sent, so the terminal T2 is closed. On the other hand, in FIG. 6, which will be described later, the switch Tsw in the terminal is connected to the upper side where the transmission of the earth is stopped, so the terminal T2 is in an idle state.
　図２は、使用状態の加入電話システムの構成図である。
　スイッチＳＷは、以下の２つの接続（下側接続、上側接続）を切り替えることで、端末Ｔ２の状態を加入者収容装置Ｓに反映させる。
　（下側接続＝第１接続）図１のように、スイッチＳＷ内の左側端子２つをそれぞれ右側に存在する下側の端子と接続する状態。これにより、端末Ｔ２の加入者線ＴＬと、地気検出回路Ｇの加入者線ＤＬとを接続する。そして、地気検出回路Ｇの給電回路Ｂから端末Ｔ２に給電し、端末Ｔ２が空き状態か閉塞状態かを地気検出回路Ｇの検出部Ｄに監視させる。 FIG. 2 is a block diagram of the subscriber telephone system in use.
The switch SW reflects the state of the terminal T2 in the subscriber accommodation device S by switching between the following two connections (lower side connection, upper side connection).
(Lower Connection=First Connection) As shown in FIG. 1, the two left terminals in the switch SW are connected to the lower terminals on the right side. Thereby, the subscriber line TL of the terminal T2 and the subscriber line DL of the earth detection circuit G are connected. Then, power is supplied to the terminal T2 from the power supply circuit B of the ground detection circuit G, and the detector D of the ground detection circuit G monitors whether the terminal T2 is in an open state or a closed state.
　（上側接続＝第２接続）図２のように、スイッチＳＷ内の左側端子２つをそれぞれ右側に存在する上側の端子と接続する状態。これにより、端末Ｔ２の加入者線ＴＬと、加入者回路ＳＬＩＣ２の加入者線ＳＬとが接続する。よって、端末Ｔ２は使用状態となり、端末Ｔ２の接続信号を加入者回路ＳＬＩＣ２に中継させることができる。なお、端末Ｔ２の接続信号とは、例えば、端末Ｔ１からの呼出信号（Ｓ１４）や、端末Ｔ２からの発呼信号（Ｓ１１）である。 (Upper connection = second connection) As shown in FIG. 2, the two left terminals in the switch SW are connected to the upper terminals on the right side. Thereby, the subscriber line TL of the terminal T2 and the subscriber line SL of the subscriber circuit SLIC2 are connected. Therefore, the terminal T2 is put into use, and the connection signal of the terminal T2 can be relayed to the subscriber circuit SLIC2. The connection signal for terminal T2 is, for example, a call signal from terminal T1 (S14) or a call signal from terminal T2 (S11).
　地気検出回路Ｇは、第１接続の端末Ｔ２から地気が送出されたことを検出した場合は、加入者収容装置Ｓの制御部Ｃａに地気送出状態を通知する（波線矢印で示す信号ＧＬ）。
　制御部Ｃａは、端末Ｔ２の地気送出状態を受け、端末Ｔ１などの他端末との接続処理の相手を、端末Ｔ２から閉塞状態用の代替回線（図示省略）に切り替えるように、各加入者回路ＳＬＩＣ１，２を制御する。つまり、地気検出回路Ｇから各加入者回路ＳＬＩＣ１，２に対して、閉塞状態用の代替回線に切り替える旨の指示（信号ＧＬ）が、制御部Ｃａを介して通知される。 When the earth detection circuit G detects that the earth is sent from the terminal T2 of the first connection, the earth detection circuit G notifies the controller Ca of the subscriber accommodation unit S of the earth send state (signal indicated by the wavy line arrow). GL).
The control unit Ca receives the ground transmission state of the terminal T2, and instructs each subscriber to switch the partner of connection processing with other terminals such as the terminal T1 from the terminal T2 to an alternative line (not shown) for the blocked state. It controls the circuits SLIC1,2. In other words, an instruction (signal GL) to switch to the alternative line for the blocked state is notified from the ground detection circuit G to each of the subscriber circuits SLIC1 and 2 via the control unit Ca.
　スイッチＳＷは、以下の（場合１）または（場合２）に、下側接続から上側接続に切り替えることで、空き状態の端末Ｔ２を使用状態に遷移させる。
　（場合１）端末Ｔ２へ着信するための呼出信号（Ｓ１４）を加入者収容装置Ｓ（加入者回路ＳＬＩＣ２）が検出した場合。
　（場合２）端末Ｔ２から発信するためのオフフック（Ｓ１１）により、加入者線ＤＬ，ＴＬのループ閉成（直流回路閉成状態）を地気検出回路Ｇが検出した場合。 The switch SW switches the idle state terminal T2 to the use state by switching from the lower connection to the upper connection in the following (Case 1) or (Case 2).
(Case 1) When the subscriber accommodation device S (subscriber circuit SLIC2) detects a calling signal (S14) for receiving a call to the terminal T2.
(Case 2) When the ground detection circuit G detects loop closure (DC circuit closed state) of the subscriber lines DL and TL by off-hooking (S11) for originating from the terminal T2.
　スイッチＳＷは、端末Ｔ２の通話切断状態（図８の発信側切断時または着信側切断時）には、上側接続から下側接続に切り替えることで、使用状態の端末Ｔ２を空き状態に遷移させる。これにより、加入者回路ＳＬＩＣ２は開放され、端末Ｔ２と地気検出回路Ｇとが再び接続される。 When the terminal T2 is in the disconnected state of the call (when the calling side is disconnected or when the receiving side is disconnected in FIG. 8), the switch SW switches from the upper side connection to the lower side connection, thereby transitioning the used terminal T2 to the idle state. As a result, the subscriber circuit SLIC2 is opened, and the terminal T2 and the ground detection circuit G are connected again.
　図３は、制御部ＣａからスイッチＳＷを切り替えるときの加入電話システムの構成図である。
　まず、制御部Ｃａは、端末Ｔ２の使用状態（端末Ｔ１からの呼出信号（Ｓ１４）や、端末Ｔ２からの発呼信号（Ｓ１１））を検出する。この検出時に、制御部Ｃａは、スイッチＳＷを下側接続から上側接続（加入者回路ＳＬＩＣ２への接続）に切り替える旨の信号ＣＬを、スイッチＳＷに送信する（図３に示す状態）。 FIG. 3 is a block diagram of the subscriber telephone system when switching the switch SW from the control unit Ca.
First, the control unit Ca detects the usage state of the terminal T2 (the calling signal from the terminal T1 (S14) and the calling signal from the terminal T2 (S11)). At the time of this detection, the control unit Ca transmits a signal CL to the switch SW to switch the switch SW from the lower connection to the upper connection (connection to the subscriber circuit SLIC2) (state shown in FIG. 3).
　次に、制御部Ｃａは、端末Ｔ２の通話切断状態（図８の発信側切断時または着信側切断時）を検出し、スイッチＳＷを上側接続から下側接続（地気検出回路Ｇへの接続）に切り替える旨の信号ＣＬを、スイッチＳＷに送信する。
　この図３の構成により、スイッチＳＷを切り替えるための部品を別途用意しなくても、制御部Ｃａに備わっているスイッチＳＷの切り替え制御機能を流用し、コストを削減できる。 Next, the control unit Ca detects the call disconnection state of the terminal T2 (when the caller is disconnected or when the caller is disconnected in FIG. 8), and switches the switch SW from the upper connection to the lower connection (connection to the earth detection circuit G). ) to the switch SW.
With the configuration of FIG. 3, the switching control function of the switch SW provided in the control unit Ca can be diverted without separately preparing a component for switching the switch SW, thereby reducing the cost.
　図４は、検出部ＤｓからスイッチＳＷを切り替えるときの加入電話システムの構成図である。
　検出部Ｄｓは、加入者回路ＳＬＩＣとスイッチＳＷとの間を接続する一対の加入者線ＳＬ上に備えられる。
　まず、端末Ｔ２の使用状態（端末Ｔ１からの呼出信号（Ｓ１４）や、端末Ｔ２からの発呼信号（Ｓ１１））への変化を受け、加入者回路ＳＬＩＣ２の状態が変化し、加入者線ＳＬの状態も変化する。以下、非特許文献１に規定されるように、加入者線ＳＬの状態（電圧および電流の状態の組み合わせ）と、端末Ｔ２の状態とを対応付ける。
　・加入者線ＳＬ１が地気送出状態であり、かつ、加入者線ＳＬ２が電池送出状態（-42～-53Vの電圧が送出される状態）であるときに、端末Ｔ２を空き状態とする。
　・加入者線ＳＬ１が地気送出状態以外、または、加入者線ＳＬ２が電池送出状態以外であるときに、端末Ｔ２を使用状態とする。 FIG. 4 is a block diagram of the subscriber telephone system when switching the switch SW from the detector Ds.
The detector Ds is provided on a pair of subscriber lines SL connecting between the subscriber circuit SLIC and the switch SW.
First, in response to a change in the state of use of the terminal T2 (a call signal (S14) from the terminal T1 and a call signal (S11) from the terminal T2), the state of the subscriber circuit SLIC2 changes, and the subscriber line SL state also changes. Hereinafter, as defined in Non-Patent Document 1, the state of the subscriber line SL (combination of voltage and current states) is associated with the state of the terminal T2.
When the subscriber line SL1 is in the earth sending state and the subscriber line SL2 is in the battery sending state (a state in which a voltage of -42 to -53 V is sent), the terminal T2 is made idle.
When the subscriber line SL1 is not in the ground transmission state or the subscriber line SL2 is not in the battery transmission state, the terminal T2 is set to the use state.
　次に、端末Ｔ２の空き状態から使用状態への変化を検出した検出部Ｄｓは、スイッチＳＷを下側接続から上側接続（加入者回路ＳＬＩＣ２への接続）に切り替える信号ＢＬをスイッチＳＷに送信する（図４に示す状態）。
　その後、検出部Ｄｓは、端末Ｔ２の通話切断状態（図８の発信側切断時または着信側切断時）により空き状態への変化を検出すると、スイッチＳＷを上側接続から下側接続（地気検出回路Ｇへの接続）に切り替える。
　この図４の構成により、スイッチＳＷの切り替え制御機能が備わっていない既存の制御部Ｃａを流用しつつ、検出部Ｄｓを新たに加入者収容装置Ｓに追加するだけで、早期に加入者収容装置Ｓをダイヤルインサービスに対応できる。 Next, the detection unit Ds, which has detected the change from the idle state to the used state of the terminal T2, transmits to the switch SW a signal BL for switching the switch SW from the lower side connection to the upper side connection (connection to the subscriber circuit SLIC2). (state shown in FIG. 4).
After that, when the detection unit Ds detects a change to the idle state due to the call disconnection state of the terminal T2 (at the time of disconnection of the calling side or at the time of disconnection of the receiving side in FIG. 8), the detection unit Ds switches the switch SW from the upper connection to the lower connection (earth detection). connection to circuit G).
With the configuration shown in FIG. 4, the existing control unit Ca, which does not have a switching control function for the switch SW, can be reused, and only by newly adding the detection unit Ds to the subscriber accommodation device S, the subscriber accommodation device can be installed at an early stage. S can support dial-in service.
　図５は、端末Ｔ２から発信する場合の加入電話システムの構成図である。
　地気検出回路Ｇは、スイッチＳＷを介して端末Ｔ２と接続する加入者線ＤＬを監視する。地気検出回路Ｇは、端末Ｔ２からの発呼信号（Ｓ１１）により加入者線ＴＬ，ＤＬが直流回路閉成状態となることを検出すると、その旨を信号ＧＬとして制御部Ｃａに通知する。制御部Ｃａは、下側接続から上側接続に切り替える旨の信号ＣＬをスイッチＳＷに通知する（図５に示す状態）。 FIG. 5 is a block diagram of a subscriber telephone system when a call is originated from terminal T2.
A ground detection circuit G monitors the subscriber line DL connected to the terminal T2 via the switch SW. When the ground detection circuit G detects that the subscriber lines TL and DL are in the DC circuit closed state by the call signal (S11) from the terminal T2, it notifies the controller Ca of the fact as a signal GL. The control unit Ca notifies the switch SW of a signal CL for switching from the lower connection to the upper connection (state shown in FIG. 5).
　なお、端末Ｔ２からの発呼信号（Ｓ１１）を地気検出回路Ｇに検出させるために、地気検出回路Ｇ内の給電回路Ｂ２は、加入者回路ＳＬＩＣ２と等価の機能・特性を持つことで、端末Ｔ２に給電する。これにより、検出部Ｄは、加入者線ＤＬ１と加入者線ＤＬ２とで互いに等しい電流が流れたこと（直流回路閉成状態）を検出した場合に、端末Ｔ２からの発呼信号（Ｓ１１）を検出する。 In order to cause the ground detection circuit G to detect the call signal (S11) from the terminal T2, the power supply circuit B2 in the ground detection circuit G has functions and characteristics equivalent to those of the subscriber circuit SLIC2. , feed the terminal T2. As a result, when the detector D detects that the same current flows through the subscriber line DL1 and the subscriber line DL2 (DC circuit closed state), it detects the calling signal (S11) from the terminal T2. To detect.
　図６は、着信専用の端末Ｔ２が収容される加入電話システムの構成図である。このような自身からの発呼信号を送信不可とする着信専用端末は、例えば、図１で説明した閉塞状態用の代替回線（切替先）の端末として用いられる。
　地気検出回路Ｇは、スイッチＳＷを介して端末Ｔ２と接続する加入者線ＤＬを監視する。地気検出回路Ｇは、端末Ｔ２からの発呼信号（Ｓ１１）により加入者線ＴＬ，ＤＬが直流回路閉成状態となることを検出すると、発呼できない旨を警告する信号（例えば話中音信号）を、信号源Ｔｏから端末Ｔ２に送出させる。これにより、端末Ｔ２の利用者は、着信専用の端末Ｔ２から誤って発呼しようとしたことに気付ける。 FIG. 6 is a block diagram of a subscriber telephone system in which a terminal T2 dedicated to incoming calls is accommodated. Such a reception-only terminal that cannot transmit a calling signal from itself is used, for example, as a terminal of an alternative line (switching destination) for the blocked state described with reference to FIG.
A ground detection circuit G monitors the subscriber line DL connected to the terminal T2 via the switch SW. When the ground detection circuit G detects that the subscriber lines TL and DL are in the DC circuit closed state due to the calling signal (S11) from the terminal T2, it emits a signal (for example, a busy tone) warning that the call cannot be made. signal) from the signal source To to the terminal T2. As a result, the user of the terminal T2 notices that he has erroneously attempted to make a call from the incoming-only terminal T2.
　なお、図５と同様に、端末Ｔ２からの発呼信号（Ｓ１１）を地気検出回路Ｇに検出させるために、地気検出回路Ｇ内の給電回路Ｂ２は、加入者回路ＳＬＩＣ２と等価の機能・特性を持つことで、端末Ｔ２に給電する。これにより、検出部Ｄは、加入者線ＤＬ１と加入者線ＤＬ２とで互いに等しい電流が流れたこと（直流回路閉成状態）を検出した場合に、端末Ｔ２からの発呼信号（Ｓ１１）を検出する。 As in FIG. 5, in order to cause the ground detection circuit G to detect the calling signal (S11) from the terminal T2, the power supply circuit B2 in the ground detection circuit G has a function equivalent to that of the subscriber circuit SLIC2. - Powering terminal T2 by having the property. As a result, when the detector D detects that the same current flows through the subscriber line DL1 and the subscriber line DL2 (DC circuit closed state), it detects the calling signal (S11) from the terminal T2. To detect.
　図７は、加入者収容装置Ｓのハードウェア構成図である。
　加入者収容装置Ｓは、ＣＰＵ９０１と、ＲＡＭ９０２と、ＲＯＭ９０３と、ＨＤＤ９０４と、通信Ｉ／Ｆ９０５と、入出力Ｉ／Ｆ９０６と、メディアＩ／Ｆ９０７とを有するコンピュータ９００として構成される。
　通信Ｉ／Ｆ９０５は、外部の通信装置９１５と接続される。入出力Ｉ／Ｆ９０６は、入出力装置９１６と接続される。メディアＩ／Ｆ９０７は、記録媒体９１７からデータを読み書きする。さらに、ＣＰＵ９０１は、ＲＡＭ９０２に読み込んだプログラム（アプリケーションや、その略のアプリとも呼ばれる）を実行することにより、各処理部を制御する。そして、このプログラムは、通信回線を介して配布したり、ＣＤ－ＲＯＭ等の記録媒体９１７に記録して配布したりすることも可能である。 FIG. 7 is a hardware configuration diagram of the subscriber accommodation device S. As shown in FIG.
The subscriber accommodation device S is configured as a computer 900 having a CPU 901 , a RAM 902 , a ROM 903 , an HDD 904 , a communication I/F 905 , an input/output I/F 906 and a media I/F 907 .
Communication I/F 905 is connected to an external communication device 915 . Input/output I/F 906 is connected to input/output device 916 . A media I/F 907 reads and writes data from a recording medium 917 . Furthermore, the CPU 901 controls each processing unit by executing a program (also called an application or an app for short) read into the RAM 902 . This program can be distributed via a communication line or recorded on a recording medium 917 such as a CD-ROM for distribution.
［効果］
　本発明は、加入者線ＴＬを介して端末Ｔ２と接続される地気検出回路Ｇと、収容する端末Ｔ２の通信を中継する加入者回路ＳＬＩＣとを有する加入者収容装置Ｓであって、
　地気検出回路Ｇが、端末Ｔ２を監視しており、閉塞状態の端末Ｔ２から加入者線ＴＬを介して地気が送出されたことを検出すると、端末Ｔ２と接続する信号を閉塞状態用の代替回線に切り替えるように、加入者回路ＳＬＩＣに指示することを特徴とする。 [effect]
The present invention is a subscriber accommodation apparatus S having a ground detection circuit G connected to a terminal T2 via a subscriber line TL, and a subscriber circuit SLIC for relaying communication of the terminal T2 to be accommodated,
A ground detection circuit G monitors the terminal T2, and when it detects that the ground is sent from the blocked terminal T2 via the subscriber line TL, it outputs a signal for connection to the terminal T2 for the blocked state. It is characterized by instructing the subscriber circuit SLIC to switch to an alternative line.
　これにより、地気検出機能の無い加入者回路ＳＬＩＣ１，２を用いても、地気検出回路Ｇがダイヤルインサービスの閉塞状態を扱えるので、地気検出機能を有する専用の加入者回路を用いるよりサービス提供コストを低減できる。
　なお、本実施形態では、地気検出回路Ｇの地気検出機能を、番号情報送出機能（ダイヤルイン）サービスに応用した例を示した。一方、地気検出回路Ｇの地気検出機能を、別のサービスに適用してもよい。 As a result, even if the subscriber circuits SLIC1 and 2 without the ground detection function are used, the ground detection circuit G can handle the blocked state of the dial-in service. Service provision cost can be reduced.
In this embodiment, an example is shown in which the ground detection function of the ground detection circuit G is applied to the number information transmission function (dial-in) service. On the other hand, the ground detection function of the ground detection circuit G may be applied to another service.
　本発明は、加入者収容装置Ｓが、端末Ｔ２と地気検出回路Ｇとの間の第１接続と、端末Ｔ２と加入者回路ＳＬＩＣとの間の第２接続とを切り替えるスイッチＳＷを有しており、
　スイッチＳＷが第１接続のときには、空き状態の端末Ｔ２が閉塞状態に移行することを監視し、
　スイッチＳＷが第２接続のときには、端末Ｔ２の接続信号を加入者回路ＳＬＩＣに中継させることで、端末Ｔ２を使用状態とすることを特徴とする。 According to the present invention, the subscriber accommodation device S has a switch SW for switching between a first connection between the terminal T2 and the ground detection circuit G and a second connection between the terminal T2 and the subscriber circuit SLIC. and
when the switch SW is in the first connection, monitoring that the terminal T2 in the idle state transitions to the blocked state;
When the switch SW is in the second connection, the connection signal of the terminal T2 is relayed to the subscriber circuit SLIC so that the terminal T2 is put into use.
　これにより、端末Ｔ２の状態変化に追従してスイッチＳＷの接続を切り替えることで、端末Ｔ２の状態変化に素早く対応できる。 As a result, by switching the connection of the switch SW following the state change of the terminal T2, it is possible to quickly respond to the state change of the terminal T2.
　本発明は、加入者収容装置Ｓが、さらに、加入者回路ＳＬＩＣを制御する制御部Ｃａを有しており、
　制御部Ｃａが、端末Ｔ２の接続信号を検出すると、スイッチＳＷを第１接続から第２接続に切り替えるとともに、使用状態の端末Ｔ２について通話の切断状態を検出すると、スイッチＳＷを第２接続から第１接続に切り替えることを特徴とする。 In the present invention, the subscriber accommodation device S further has a control unit Ca for controlling the subscriber circuit SLIC,
When the control unit Ca detects the connection signal of the terminal T2, it switches the switch SW from the first connection to the second connection. 1 connection.
　これにより、スイッチＳＷの接続を切り替える機能を既存の制御部Ｃａに実行させることで、加入者収容装置Ｓ内にスイッチＳＷの接続を切り替えるための新たな部品を追加しなくても済む。 As a result, by causing the existing control unit Ca to perform the function of switching the connection of the switch SW, there is no need to add a new component in the subscriber accommodation device S for switching the connection of the switch SW.
　本発明は、加入者収容装置Ｓが、さらに、加入者回路ＳＬＩＣとスイッチＳＷとの間を接続する一対の加入者線ＳＬ上に検出部Ｄｓを有しており、
　検出部Ｄｓが、端末Ｔ２の接続信号を示す電圧および電流の状態の組み合わせを一対の加入者線ＳＬから検出すると、スイッチＳＷを第１接続から第２接続に切り替えるとともに、使用状態の端末Ｔ２について通話の切断状態を示す電圧および電流の状態の組み合わせを検出すると、スイッチＳＷを第２接続から第１接続に切り替えることを特徴とする。 According to the present invention, the subscriber accommodation device S further has a detector Ds on a pair of subscriber lines SL connecting between the subscriber circuit SLIC and the switch SW,
When the detection unit Ds detects a combination of the voltage and current states indicating the connection signal of the terminal T2 from the pair of subscriber lines SL, the switch SW is switched from the first connection to the second connection, and the terminal T2 in use state is switched. It is characterized in that the switch SW is switched from the second connection to the first connection when a combination of voltage and current states indicating a call disconnection state is detected.
　これにより、スイッチＳＷの接続を切り替える機能を新たに追加した検出部Ｄｓに実行させることで、スイッチＳＷの接続を切り替えるための機能を持たない制御部Ｃａをそのまま活用できる。 As a result, by causing the newly added detection unit Ds to perform the function of switching the connection of the switch SW, the control unit Ca that does not have the function of switching the connection of the switch SW can be utilized as it is.
　本発明は、地気検出回路Ｇが、端末Ｔ２に給電することで端末Ｔ２からの発呼信号を検出すると、スイッチＳＷを第１接続から第２接続に切り替え、端末Ｔ２からの発呼信号を加入者回路ＳＬＩＣに通知させることを特徴とする。 In the present invention, when the ground detection circuit G detects a call signal from the terminal T2 by supplying power to the terminal T2, the switch SW is switched from the first connection to the second connection to detect the call signal from the terminal T2. It is characterized by notifying the subscriber circuit SLIC.
　これにより、端末Ｔ２を発信端末として利用可能になる。 As a result, terminal T2 can be used as a calling terminal.
　本発明は、端末Ｔ２が、自身からの発呼信号を送信不可とする着信端末であり、
　加入者収容装置Ｓが、さらに、信号源Ｔｏを有しており、
　地気検出回路Ｇが、端末Ｔ２に給電することで端末Ｔ２からの発呼信号を検出すると、発呼できない旨を警告する話中音信号を信号源Ｔｏから端末Ｔ２に送出させることを特徴とする。 In the present invention, the terminal T2 is a receiving terminal that cannot transmit a calling signal from itself,
The subscriber accommodation device S further has a signal source To,
When the ground detection circuit G detects a calling signal from the terminal T2 by supplying power to the terminal T2, it causes the signal source To to send a busy tone signal warning that the call cannot be made to the terminal T2. do.
　これにより、端末Ｔ２を着信専用端末として利用可能になる。 As a result, terminal T2 can be used as a dedicated terminal for incoming calls.
　Ｂ　　　給電回路
　Ｃａ　　制御部
　Ｄ　　　検出部
　Ｇ　　　地気検出回路
　Ｓ　　　加入者収容装置
　ＳＬＩＣ１、ＳＬＩＣ２　加入者回路
　ＳＷ　　スイッチ
　Ｔ１、Ｔ２　端末
　Ｔｓｗ　端末内スイッチ
　Ｔｏ　　信号源
　ＴＬ、ＤＬ、ＳＬ　加入者線 B feeding circuit Ca control unit D detection unit G earth detection circuit S subscriber accommodation device SLIC1, SLIC2 subscriber circuit SW switch T1, T2 terminal Tsw switch in terminal To signal source TL, DL, SL subscriber line

Claims (8)

  1. 　加入者線を介して端末と接続される地気検出回路と、収容する前記端末の通信を中継する加入者回路とを有する加入者収容装置であって、
    　前記地気検出回路は、前記端末を監視しており、閉塞状態の前記端末から前記加入者線を介して地気が送出されたことを検出すると、前記端末と接続する信号を閉塞状態用の代替回線に切り替えるように、前記加入者回路に指示することを特徴とする
    　加入者収容装置。     A subscriber accommodation apparatus having a ground detection circuit connected to a terminal via a subscriber line and a subscriber circuit for relaying communication of the terminal to be accommodated,
    The ground detection circuit monitors the terminal, and when it detects that the ground is sent from the terminal in the blocked state through the subscriber line, it outputs a signal for connection to the terminal for the blocked state. A subscriber accommodation device, which instructs the subscriber circuit to switch to an alternative line.
  2. 　前記加入者収容装置は、前記端末と前記地気検出回路との間の第１接続と、前記端末と前記加入者回路との間の第２接続とを切り替えるスイッチを有しており、
    　前記スイッチが前記第１接続のときには、空き状態の前記端末が閉塞状態に移行することを監視し、
    　前記スイッチが前記第２接続のときには、前記端末の接続信号を前記加入者回路に中継させることで、前記端末を使用状態とすることを特徴とする
    　請求項１に記載の加入者収容装置。     The subscriber accommodation device has a switch for switching between a first connection between the terminal and the ground detection circuit and a second connection between the terminal and the subscriber circuit,
    when the switch is in the first connection, monitoring that the idle terminal transitions to a closed state;
    2. The subscriber accommodation apparatus according to claim 1, wherein when said switch is in said second connection, said terminal is put into use state by relaying a connection signal of said terminal to said subscriber circuit.
  3. 　前記加入者収容装置は、さらに、前記加入者回路を制御する制御部を有しており、
    　前記制御部は、前記端末の接続信号を検出すると、前記スイッチを前記第１接続から前記第２接続に切り替えるとともに、使用状態の前記端末について通話の切断状態を検出すると、前記スイッチを前記第２接続から前記第１接続に切り替えることを特徴とする
    　請求項２に記載の加入者収容装置。     The subscriber accommodation device further has a control unit for controlling the subscriber circuit,
    The control unit switches the switch from the first connection to the second connection when a connection signal of the terminal is detected, and switches the switch to the second connection when a call disconnection state is detected for the terminal in use. 3. The subscriber accommodation device according to claim 2, wherein the connection is switched to the first connection.
  4. 　前記加入者収容装置は、さらに、前記加入者回路と前記スイッチとの間を接続する一対の加入者線上に検出部を有しており、
    　前記検出部は、前記端末の接続信号を示す電圧および電流の状態の組み合わせを一対の加入者線から検出すると、前記スイッチを前記第１接続から前記第２接続に切り替えるとともに、使用状態の前記端末について通話の切断状態を示す電圧および電流の状態の組み合わせを検出すると、前記スイッチを前記第２接続から前記第１接続に切り替えることを特徴とする
    　請求項２に記載の加入者収容装置。     The subscriber accommodation device further has detection units on a pair of subscriber lines connecting between the subscriber circuit and the switch,
    The detection unit switches the switch from the first connection to the second connection when detecting, from the pair of subscriber lines, a combination of states of voltage and current indicating a connection signal of the terminal, and detects the state of the terminal in use. 3. The subscriber accommodation apparatus according to claim 2, wherein said switch is switched from said second connection to said first connection upon detecting a combination of voltage and current states indicating a disconnection state of a call.
  5. 　前記地気検出回路は、前記端末に給電することで前記端末からの発呼信号を検出すると、前記スイッチを前記第１接続から前記第２接続に切り替え、前記端末からの発呼信号を前記加入者回路に通知させることを特徴とする
    　請求項２に記載の加入者収容装置。     When the ground detection circuit detects a call signal from the terminal by supplying power to the terminal, the ground detection circuit switches the switch from the first connection to the second connection, and detects the call signal from the terminal to the subscriber. 3. The subscriber accommodation device according to claim 2, wherein the notification is made to a subscriber circuit.
  6. 　前記端末は、自身からの発呼信号を送信不可とする着信端末であり、
    　前記加入者収容装置は、さらに、信号源を有しており、
    　前記地気検出回路は、前記端末に給電することで前記端末からの発呼信号を検出すると、発呼できない旨を警告する話中音信号を前記信号源から前記端末に送出させることを特徴とする
    　請求項１に記載の加入者収容装置。     The terminal is a receiving terminal that cannot transmit a calling signal from itself,
    The subscriber accommodation device further has a signal source,
    When the ground detection circuit detects a call signal from the terminal by supplying power to the terminal, the ground detection circuit causes the signal source to send a busy tone signal to the terminal to warn that the call cannot be made. The subscriber accommodation device according to claim 1.
  7. 　加入者収容装置は、加入者線を介して端末と接続される地気検出回路と、収容する前記端末の通信を中継する加入者回路とを有しており、
    　前記地気検出回路は、前記端末を監視しており、閉塞状態の前記端末から前記加入者線を介して地気が送出されたことを検出すると、前記端末と接続する信号を閉塞状態用の代替回線に切り替えるように、前記加入者回路に指示することを特徴とする
    　加入者収容方法。     A subscriber accommodation device has a ground detection circuit connected to a terminal via a subscriber line, and a subscriber circuit for relaying communication of the accommodated terminal,
    The ground detection circuit monitors the terminal, and when it detects that the ground is sent from the terminal in the blocked state through the subscriber line, it outputs a signal for connection to the terminal for the blocked state. A subscriber accommodation method, comprising: instructing the subscriber circuit to switch to an alternative line.
  8. 　コンピュータを、請求項１ないし請求項６のいずれか１項に記載の加入者収容装置として機能させるための加入者収容プログラム。 A subscriber accommodation program for causing a computer to function as the subscriber accommodation device according to any one of claims 1 to 6.
PCT/JP2021/023821 2021-06-23 2021-06-23 Subscriber housing device, subscriber housing method, and subscriber housing program WO2022269812A1 (en)

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