JP5169392B2 - Extension analog telephone system - Google Patents

Description

  The present invention relates to an extension analog telephone system capable of transmitting and receiving data relating to setting or maintenance between a private branch exchange and a standby extension analog telephone.

An extension analog telephone connected to a conventional private branch exchange usually forms a call loop when it goes off-hook, receives power supply, operates with the supplied power, and receives data related to setting or maintenance from the private branch exchange. It can be set in the own phone, and various settings of the own phone can be notified to the private branch exchange.
Therefore, since there is no power supply during on-hook, the extension analog telephone does not operate and the various data cannot be transmitted / received.

  The data transmitted / received during on-hook is, for example, dial data for abbreviated dialing of an extension analog telephone.

  As a technique for solving the above-described drawbacks, there is a technique in which only a lamp is lit during on-hook (for example, Patent Document 1). This technology supplies a DC high voltage to an extension analog telephone when there is a message from an outside line or extension. The extension analog telephone detects the high voltage with a Zener diode or the like, and turns on the message lamp with the Zener current.

However, this technique is until the message lamp inside the telephone is turned on, and various data cannot be set on the analog telephone that is on-hook.
Japanese Patent Laid-Open No. 6-164772

  An object of the present invention is to supply power to an on-hook analog telephone without forming a DC loop of a two-wire analog extension and to set or maintain data between the on-hook analog telephone and the private branch exchange. Is to enable transmission / reception.

In order to solve the above problems, the present invention is an extension telephone system including a private branch exchange that accommodates an external line and a two-wire analog extension, and an extension analog telephone connected to the extension,
The private branch exchange includes a high voltage supply unit that supplies a high voltage equal to or higher than a voltage related to incoming / outgoing calls to the extension analog telephone, and exchange side data that transmits PB signal data to the extension analog telephone in a state where the high voltage is supplied. The extension analog telephone includes a transmission unit, and the extension analog telephone generates a high voltage detection part that detects a high voltage that is equal to or higher than a voltage related to the incoming / outgoing call and an operating power that is supplied from the high voltage power to an electric circuit in the telephone. a high voltage input power unit, the high voltage with the phone side data reception unit for receiving the private branch exchange and the PB signal data while being supplied to said extension analog telephone in the private branch exchange Gao-hook when to send a predetermined PB signal data relating to setting or maintenance, the private branch exchange, the high voltage from the high voltage supply unit supplies to the extension analog telephone, said If the high voltage detecting unit of the analog telephone detects the high voltage, the extension analog telephone activates the high voltage input power supply unit, before Symbol extension analog telephone, said two-wire to the high voltage is superimposed characterized in that it receives a predetermined PB signal data relating to the set or maintenance via the analog extension.
The private branch exchange simultaneously supplies a high voltage from the high voltage supply unit to a plurality of extension analog telephones, and simultaneously transmits predetermined PB signal data related to setting or maintenance to the plurality of extension analog telephones. And

Advantageous Effects of Invention According to the present invention, there is an advantage that data relating to setting and maintenance such as one-touch dial can be registered individually or simultaneously from a private branch exchange to a standby (on-hook) extension analog telephone.
There is also an advantage that various data in the extension analog telephone can be read from the private branch exchange. The data read by the private branch exchange is not limited to data related to setting and maintenance, but may be various sensor information such as a temperature / humidity meter mounted on an extension analog telephone.
In addition, a remote voice monitor function that forcibly activates the standby extension analog telephone from the private branch exchange and monitors the surrounding voice with the microphone of the started extension analog telephone, or remote voice that reproduces simultaneous notification voice and threatening voice from the speaker It is also possible to control the playback function and the like.
By the way, it goes without saying that the power supply to the extension analog telephone is the same as the conventional analog two-wire system, and no new wiring is required.

FIG. 1 is a block diagram of a private branch exchange 100 and an extension analog telephone 300 according to the extension analog telephone system of the present invention. The private branch exchange 100 is a private branch exchange that accommodates external lines and extensions, and accommodates a data input / output device 200 and a two-wire analog extension telephone 300. In FIG. 1, the number of the two-wire analog extension telephone 300 is one, but this is merely omitted, and naturally a plurality of telephones can be accommodated. Although not shown in FIG. 1, as an extension telephone, a key telephone connected by a digital interface may be accommodated.
The data input / output device 200 is a personal computer (PC), for example, and stores various data to be set in the analog extension telephone 300. The data input / output device 200 may be a key telephone (not shown) connected by a digital interface.

  The digital extension corresponding unit 108 accommodates the data input / output device 200 and performs data transmission with the main control unit 101. The analog extension corresponding unit 102 accommodates the analog extension telephone 300 and controls a telephone function control unit 103 that controls outgoing / incoming calls and calls, a PB receiving unit 104 and a PB transmitting unit 105 that are used when a high voltage is applied, and a high voltage transmission The control unit 106 is configured to transmit and receive data to and from the main control unit, respectively. The high voltage transmission control unit 106 controls the power supplied from the high voltage power supply unit 107. The outside line corresponding unit 109 accommodates outside lines and is controlled by the main control unit.

  When only the normal telephone function is used, the telephone function control unit 103 supplies a telephone call power supply (for example, 48V) between L1 and L2. When a high voltage is applied, the telephone power supply is supplied with a high voltage. Is superimposed. Alternatively, when a high voltage is applied, the call power supply may be stopped and only a high voltage may be applied.

  The normal telephone function of the extension analog telephone 300 will be described. When the handset 314 is raised, the hook switch 307 is closed, the loop forming unit 308 forms a loop, the call circuit unit 310 forms a call path, and the handset 314 makes a call. Further, only the DC component is extracted from the communication circuit unit 310, passes through the backflow prevention diode 313 from the power supply unit 311, and supplies power to the terminal control unit 301. The terminal control unit 301 mainly controls a transmission function (dial function). When an incoming call is received, the hook switch 307 is open, and an incoming call signal is detected by the incoming call ringing unit 309 to ring an incoming ring tone.

  Next, the operation when a high voltage is applied to the extension analog telephone 300 will be described. When a high voltage is applied between the L1 and L2 by the private branch exchange 100 while the extension analog telephone 300 is on standby, the high voltage detector 305 detects the high voltage. The high voltage is supplied to the high voltage power supply unit 306, dropped to the working voltage, supplied to the PB reception unit 302, the PB transmission unit 303, and the message lamp 304, passed through the backflow prevention diode 312 and passed to the terminal control unit 301. Supply power. At the same time, the high voltage detection unit 305 transmits information indicating the detection of the high voltage to the terminal control unit 301. The terminal control unit 301 is activated, and the PB reception unit 302, the PB transmission unit 303, the message lamp 304, the loop formation unit 308, Control of the call circuit unit 310 is started.

FIG. 2 is a detailed block diagram of the high voltage detection unit 305 and the high voltage power supply unit 306 of FIG.
When a high voltage is applied between L 1 and L 2, the polarity is matched by the diode bridge 3051, passes through the resistor 3052, and a Zener current flows through the Zener diode 3053. The zener current is detected by the current detection circuit 3054, the switch unit 3061 is controlled, and the switch is turned on. Then, a voltage is applied to the input of the regulator 3062, and the lowered voltage is output. 1 passes through the backflow prevention diode 3063, charges the large-capacitance capacitor 3064, supplies power to each block, and mainly activates the terminal control unit 301 of FIG. The purpose of the large-capacity capacitor is to have a capacity capable of holding the voltage for the time until the terminal control unit shifts to the power saving mode when the high voltage is stopped.

  FIG. 3 is a sequence diagram of data setting for an extension analog telephone. The user operates the data input / output device 200 and transmits a data setting request to the private branch exchange 100 (S100). After receiving the data, the private branch exchange 100 starts applying a high voltage to the extension analog telephone 300 (S101). The extension analog telephone 300 that has detected the high voltage is activated (S102), and information indicating that it has been activated (ACK) is transmitted to the private branch exchange 100 by a PB signal (S103). The private branch exchange 100 transmits an ACK signal to the data input / output device 200 (S104) to notify the user. The user operates the data input / output device 200 to transmit the setting data to the private branch exchange 100 (S105). The private branch exchange 100 transmits setting data to the extension analog telephone 300 using a PB signal (S106). The extension analog telephone 300 that has received the setting data sets the data (S107). After the setting is completed, the extension analog telephone 300 transmits an ACK signal as a PB signal to the private branch exchange 100 (S108), the private branch exchange 100 stops applying high voltage to the extension analog telephone 300 (S109), and inputs / outputs data. Setting completion notification data is transmitted to the apparatus 200 (S110), and a setting completion notification is sent to the user.

  Here, the data setting request S100 is, for example, one-touch dial data and abbreviated dial data of an extension analog telephone, and the dial data is simultaneously set for a plurality of extension analog telephones. It is also possible to simultaneously set the reception volume, speaker volume, and dial type settings, which are functions as a telephone, for a plurality of extension analog telephones.

  In the message lamp function, it is possible to set the lighting timing (cycle etc.) and lighting color.

  FIG. 4 is a sequence diagram of data reading from the extension analog telephone. The user operates the data input / output device 200 and transmits a data read request to the private branch exchange 100 (S200). After receiving the data, the private branch exchange 100 starts applying a high voltage to the extension analog telephone 300 (S201). The extension analog telephone 300 that has detected the high voltage is activated (S202), and information (ACK) indicating that it has been activated is transmitted to the private branch exchange 100 using a PB signal (S203). The private branch exchange 100 transmits an ACK signal to the data input / output device 200 (S204) to notify the user. The user operates the data input / output device 200, and transmits read data designation data to the private branch exchange 100 (S205). The private branch exchange 100 transmits read data designation data to the extension analog telephone 300 using a PB signal (S206). The extension analog telephone 300 that has received the data transmits the data designated by the PB signal to the private branch exchange 100 (S207), and the private branch exchange 100 sends the designated data to the data input / output device 200. Then, the user can acquire the designated data (S208). When the data acquisition is completed, the user operates the data input / output device 200 to transmit the end data to the private branch exchange 100 (S209), and the private branch exchange 100 stops applying high voltage to the extension analog telephone 300. (S210).

  Here, the data read request S200 is to read, for example, one-touch dial and abbreviated dial data. Also, various sensors can be mounted on the extension analog telephone 300 (not shown), the various sensors can be activated by applying a high voltage, and the sensor information can be read out. For example, there are a security purpose sensor, a temperature / humidity sensor, a light sensor, and the like, which are representative of human sensors.

  FIG. 5 is a sequence diagram of a remote voice monitor with an extension analog telephone. The user operates the data input / output device 200 and transmits a voice monitor request to the private branch exchange 100 (S300). After receiving the data, the private branch exchange 100 starts applying a high voltage to the extension analog telephone 300 (S301). The extension analog telephone 300 that has detected the high voltage is activated (S302), and transmits information (ACK) indicating that it has been activated to the private branch exchange 100 using a PB signal (S303). The private branch exchange 100 transmits a voice monitor request to the extension analog telephone 300 using a PB signal (S304). The extension analog telephone 300 that has received the data transmits a PB signal to the private branch exchange 100 indicating that voice monitoring is possible (ACK) (S305). The private branch exchange 100 stops applying a high voltage (S306) and switches to a normal power source for telephone calls. The extension analog telephone 300 forms a call loop and starts voice monitoring (S307). The monitored information is transmitted to the data input / output device 200 via the private branch exchange 100 and enters a voice monitoring state (S308). When the user wants to end the voice monitor, he / she operates the data input / output device 200 and transmits the end data to the private branch exchange 100 (S309). The end data is transmitted (S310). The extension analog telephone 300 disconnects the call loop (S311).

  Here, the transition to the voice monitor start (S307) will be described with reference to FIG. When shifting to the voice monitor start state, the terminal control unit 301 controls the loop forming unit 308 and the call circuit unit 310 to form a call loop and shifts to the call state. Further, at the time of disconnecting the communication loop (S311), the terminal control unit 301 controls the loop forming unit 308 and the call circuit unit 310 to disconnect the call loop.

  Here, the remote voice monitor function will be described. A microphone is mounted on the extension analog telephone 300 (not shown), and power is supplied to the microphone when a call loop is formed. It is a function to monitor with.

  Further, by using the same sequence as that shown in FIG. 5, it is also possible to perform remote voice reproduction in which voice or the like from the data input / output device is output from the speaker 315 mounted on the extension analog telephone 300. It is also possible to output from the speaker 315 sounds such as music, intimidation sound, alarm sound, time signal, wake-up call, etc. that are pre-installed in the private branch exchange 100.

  By setting the voltage value of the high voltage used in the present invention to be equal to or higher than the power supply voltage for calling used for outgoing calls, incoming calls, and calls, the incoming call does not ring when a high voltage is applied in the standby state. The high voltage is not limited to direct current, but may be alternating current. However, a voltage and frequency at which the incoming call does not ring is used, and a capacitor for smoothing to direct current is required after the diode bridge 3051 in FIG. A DC cut capacitor is required.

  The private branch exchange in the present invention can accommodate not only extension analog telephones but also key telephones. The data input / output device 200 shown in FIG. 1 includes a key telephone and can also be operated from the key telephone.

Configuration diagram of extension analog telephone system Detailed view of high voltage detector and high voltage power supply Sequence diagram of data setting for extension analog telephone Sequence diagram for reading data from an extension analog telephone Remote voice monitor sequence diagram with extension analog telephone

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Private branch exchange 101 ... Main control part 102 ... Analog telephone corresponding part 103 ... Telephone function control part 104, 302 ... PB receiving part 105, 303 ... PB transmitting part 106 ... High voltage transmission control unit 107... High voltage power supply unit 108 Digital extension corresponding unit 200 Data input / output device 300 Extension analog telephone 301 Terminal control unit 304 Message Lamp 305... High voltage detection unit 306... High voltage power supply unit 307... Hook switch 308... Loop formation unit 309. 312, 313 ... Backflow prevention diode 314 ... Handset 315 ... Speaker 3051 ... Diode bridge 3052 ... Resistor 3053 ... Zener Diode 3054 ... Current detection circuit 3061 ... Switch unit 3062 ... Regulator 3063 ... Backflow prevention diode 3064 ... Large-capacitance capacitor VDD ... Power sources L1, L2 to terminal control unit 301 Analog 2-wire communication line

Claims (2)

An extension telephone system including a private branch exchange accommodating external lines and two-line analog extensions and an extension analog telephone connected to the extension,
The private branch exchange includes a high voltage supply unit that supplies a high voltage equal to or higher than a voltage related to incoming / outgoing calls to the extension analog telephone, and exchange side data that transmits PB signal data to the extension analog telephone in a state where the high voltage is supplied. With a transmitter ,
The extension analog telephone has a high voltage detector that detects a high voltage that is equal to or higher than the voltage associated with the incoming and outgoing calls, and a high voltage input power supply that generates operating power to be supplied from the high voltage power to an electric circuit in the telephone. When, with the phone side data reception unit for receiving the private branch exchange and the PB signal data in a state where the high voltage is supplied,
When to send a predetermined PB signal data relating to setting or maintenance to the extension analog telephone in the private branch exchange Gao-hook, the private branch exchange, the high voltage from the high voltage supply unit to the extension analog telephone supplied, if the high voltage detection portion of the extension analog telephone detects the high voltage, the extension analog telephone activates the high voltage input power supply unit, before Symbol extension analog telephone, the high voltage is superimposed extension analog telephone system, characterized by receiving a predetermined PB signal data relating to the set or maintenance via the two-wire analog extension was. The extension analog telephone system according to claim 1,
The private branch exchange simultaneously supplies a high voltage from the high voltage supply unit to a plurality of extension analog telephones, and simultaneously transmits predetermined PB signal data related to setting or maintenance to the plurality of extension analog telephones. Extension analog telephone system.

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