JP3087901U - Number information transmission function Line switch - Google Patents

Abstract

(57) [Problem] To provide a number information transmitting function line switch that can be switched even when a normal telephone and a number display telephone are mixedly connected. A switch 1 connects a central office terminal L for input connection of a number information transmission function line and a plurality of terminal terminals Tn of connected equipment, which are switched and connected according to a number information transmission function service.
A DC loop creation connection device which is provided outside the box and which provides a primary response signal for DC loop creation to the terminal terminal in response to the number information transmission function service. A number information transmission function line having a central control unit CPU and a control circuit 110 having a storage means for performing switching by the program control means even when the connection equipment is a plurality of non-DC loop creation connection equipment. Secure a switch.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is compatible with the number information transmission function service of the central office, and is mixed with a plurality of non-DC loop creating and connecting devices such as telephones and facsimile devices to form a single DC loop creating and connecting device such as a number display phone. The present invention relates to a line information transmission function line switcher that can be switched even if a connection is made.

[0002]

[Prior art]

 There are various types of switchers of the prior art. For example, as described in Japanese Patent Application Laid-Open No. 3-117066, "Terminal Selective Connection Device", a line control circuit of the terminal selectable connection device performs a loop-on / loop-off of a subscriber line. Therefore, the connected devices were all switchers that deal with multiple non-DC loop-creating connected devices such as ordinary telephones and facsimile machines.

[0003]

[Problems to be solved by the invention]

 The prior art switcher is a switcher that can handle multiple non-DC loop creating connection devices such as ordinary telephones and facsimile devices. One DC loop creation connection device that has a function of providing a primary response signal for DC loop creation to terminal terminals in response to the number information transmission function service Are mixed in the terminal terminals, the loop of the line control circuit, that is, the DC loop creation, and the DC loop creation of the DC loop creation connection equipment itself, which are included in the terminal selection connection device that is the switch, are performed. However, since the DC loop is created twice, the impedance matching for the line cannot be applied, and the primary response signal cannot respond to the local line. There were no problems.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the number information transmission function line switch of the present invention is provided with a loop holding circuit for providing a primary response signal for DC loop creation in a switchable manner, and a means for reading the number information with high impedance. And a loop detection circuit having:

[0005]

[Embodiment of the invention]

 The number information transmission function line switch of the present invention is called a modem type dial-in service of a central office, and provides a number information transmission function service to a specific subscriber. (L) and a plurality of terminal terminals (Tn) of connected equipment such as telephones, facsimile machines, etc. having a specific subscriber telephone number, which are switched and connected in accordance with the number information transmission function service from the central office terminal. One of the connected devices, such as a telephone having a number display function, is connected to the external side of the box housing the switch, and the connected device itself supports the number information transmission function service. A DC loop creation connection device that provides a primary response signal for DC loop creation to terminal terminals, and the other connection device is a plurality of non-DC loop creation connection devices, such as a normal telephone. In some cases, the switching device has a central control unit (CPU) and a control circuit having a storage device for performing the switching by a program control means in a switchable manner. An activation signal detection circuit for detecting an information reception terminal activation signal of the function service, a loop detection circuit having means for reading the number information of the number information transmission function service, such as a call number and a transmission number, with high impedance; A loop holding circuit for providing a primary response signal to the local line terminal (L) to be switched by using a relay (RL) or the like, and used for initial setting means in a predetermined mode. Operation mode for presence / absence of connected equipment, operation mode for initial registration / registration confirmation of the subscriber telephone number, and execution of the program control as the switch Mode setting circuit having setting input means for selecting and initializing an operation mode to be operated, and a connection circuit for controlling these circuits, the relay (RL) and a plurality of terminal selection relays in accordance with the program control means. The main circuit is the main feature.

[0006] In the line switch of the number information transmitting function of the present invention, the number information from the loop detection circuit can be demodulated by the modem signal detection element using the number information reception circuit and provided to the control circuit.

[0007] In the number information transmission function line switch of the present invention, the initial setting means in the operation mode for performing the initial registration and registration confirmation of the subscriber telephone number comprises: first, the setting input means of the mode setting circuit; Mode, and the signal of the subscriber's telephone number input from the telephone connected to the predetermined terminal terminal is converted into a digital signal in the number information setting circuit, and is transmitted to the number information storage circuit via the CPU. It is composed of a memory that can be stored and rewritten, so that even if the power supply to this switch is stopped, the stored contents of the number information are protected and the registration confirmation is confirmed using a display circuit having display means. You can do it.

In the line switch of the number information transmission function of the present invention, the setting input means of the mode setting circuit employs various switches and the like, is provided outside the box housing the switch, and is provided with a direct current as the initial setting means. It is also possible to select the operation mode for the presence or absence of the loop creation connection device, the operation mode for initial registration and registration confirmation of the subscriber telephone number, and the operation mode for executing the program control means as the switch, and initialize them.

In the line switch of the number information transmitting function of the present invention, a busy tone generating circuit is provided, and a circuit for generating a busy tone for indicating that another terminal terminal is busy when the line is in use is provided. You can do things.

[0010] In the line switcher of the present invention, a display circuit having a display means is provided, and the display circuit is provided with a 7-segment display lamp for initial registration of the subscriber telephone number and confirmation of the registered contents. And a display drive function for displaying a busy state of each connected device and driving a display lamp of an LED type or the like, the display means being these display lamps, and a box for accommodating the switch. It can also be provided outside the body.

In the line switch of the number information transmitting function of the present invention, a power supply circuit is used to supply power from a commercial power supply through a power cord to provide various DC voltages required for the switch.

In the number information transmission function line switch of the present invention, the program control means includes a step (S1): in a start signal detection step, when an information reception terminal start signal arrives from the central office terminal (L), The start signal detection circuit detects this, and then in step (S2): In the self-response process, the operation mode of presence / absence of a DC loop creation connection device is referred from the setting input means of the initial setting means, and the DC loop creation connection If there is no device, that is, the switch itself needs to create a DC loop, read the number information, and perform self-response processing, then go to step (S3): DC loop creation process, and If there is a loop creation connection device, then proceed to step (S6): DC loop creation process, where step (S3): DC loop creation process, primary response In order to perform the self-response processing for providing a signal, a relay (RL) is activated, a DC loop is created at the local line terminal (L) by a loop holding circuit, and then step (S4): Number information acquisition In the process, the number information from the local line terminal (L) is fetched from the loop detection circuit, and then, in the step (S5): DC loop opening process, after the number information has been fetched, the loop holding circuit is shut off. Then, the next step (S9): proceed to the number information comparison step. Step (S2): In the self-response process, if there is a DC loop creation connection device, then proceed to Step (S6): DC loop creation process, in which a direct connection to a predetermined terminal terminal is made. The loop connecting device waits for the DC loop to be created, and once the DC loop has been created, the step (S7): In the number information capturing step, the number information from the local line terminal (L) is read. , From the loop detection circuit, and then step (S8): In the DC loop opening step, after the number information has been imported, a DC loop is created. The connected device waits until the DC loop is opened, and then temporarily opens the DC loop. Then, the process proceeds to the next step (S9): a step of comparing the number information, where the received called number information and the subscriber telephone number set in the number information storage circuit are stored. Then, the connection device connected to the terminal terminal to be connected is determined, and then, in the step (S10): line connection process, the corresponding terminal selection relay of the connection circuit is selected, and the line terminal (L ) Is connected to the corresponding terminal terminal, and then in step (S11): In the call process, a predetermined connected device receives a call signal via the local line terminal (L) and transmits a secondary response signal. After the transmission, the call state is secured and the call state is terminated. Next, in step (S12): In the call termination step, the connection circuit is returned to the initial state, and a series of the program control means is terminated. You can also.

In the number information transmission function line switch of the present invention, the activation signal detection circuit, when detecting the information reception terminal activation signal, notifies the CPU via a photo transistor or the like that there is an incoming call from the line. It has the effect of doing.

[0014] In the number information transmission function line switch of the present invention, the loop holding circuit can use a transistor to form a DC loop circuit, and the polarity given to the transistor is fixed by diode bridge means or the like. Has an action.

[0015] In the line switch of the number information transmission function of the present invention, the loop detection circuit can detect a change in the magnetic field of the circuit by an Hall element via an inductance composed of a predetermined coil or the like. Has the function of providing high impedance, and can provide a means for reading the number information including the incoming number and the outgoing number without affecting the various connected devices connected to the terminal terminal.

The number information transmission function line switch of the present invention comprises a loop holding circuit for providing a switchable primary response signal of a DC loop and a loop detection circuit having means for reading the number information with high impedance. Therefore, one DC loop making connection device, such as a telephone having a number display function, is connected to a plurality of non-DC loop making connection devices such as telephones and facsimile devices. The DC loop making connection device provides a primary response signal without using the loop holding circuit of the switch, and has an operation of reading the number information by the loop detection circuit. In addition to being able to handle these connected devices in a freely switchable manner, it is also possible to switch the operation mode so that all the connected devices are connected devices that create multiple non-DC loops. Using the loop holding circuit and the loop detecting circuit, the present invention has an effect that these can be switched freely.

[0017]

【Example】

 In the drawings of an embodiment of the present invention, FIG. 1 is a circuit diagram of a number information transmission function line switch, (A) is a partially omitted appearance plan view, (B) is a partially omitted appearance rear view, and (C). Is a side view of a partially omitted appearance. Fig. 2 is a schematic circuit block diagram of the number information transmission function line switch. FIG. 3 is a schematic operation flowchart of the number information transmission function line switch.

An embodiment of the present invention will be described below. As shown in FIG. 1, the number information transmission function line switch is also called a modem type dial-in service of a telephone station. A line terminal (L) for inputting and connecting a number information transmission function line provided to a subscriber, and a specific subscriber telephone number to be switched and connected in accordance with the number information transmission function service from the line terminal. Terminal terminals (T1, T2, T3) of connected equipment such as telephones, facsimile machines, etc., on the outer side surface of the box housing the switch (1). A DC loop creation connection device that provides a primary response signal for DC loop creation to the terminal terminal in response to the number information transmission function service, such as a telephone having a display function. The central control unit (CPU) and its storage, which can be switched by the program control means even when the other connected equipment is a plurality of non-DC loop making connection equipment such as a normal telephone. A switching circuit having a control circuit (110) having a means, comprising: a start signal detection circuit (10) for detecting an information reception terminal start signal of the number information transmission function service; A loop detection circuit (20) having means for reading, with high impedance, number information including an incoming number and an outgoing number of an information transmission function service, and a number information receiving circuit (40) for providing the number information to a control circuit. ) And a loop holding circuit (30) for providing a primary response signal to a DC loop to the local line terminal (L) so as to be switchable using a loop relay (RL). An operation mode for the presence or absence of the DC loop creation connection device, an operation mode for performing initial registration / registration confirmation of the subscriber telephone number, and an operation mode for executing the program control as the switch are used as mode initial setting means. A mode setting circuit (100) having setting input means (100a) for selecting and initializing, and these circuits, a loop relay (RL) and a plurality of terminal selection relays (RA, RB, RC) And a connection circuit (50) controlled according to the program control means as a main circuit.

In the number information transmitting function line switch of the embodiment of the present invention, the number information receiving circuit (40) demodulates the number information from the loop detecting circuit (20) by the modem signal detecting element, and controls the control circuit. (110).

In the line switch of the number information transmitting function according to the embodiment of the present invention, the initial setting means in the operation mode for performing initial registration and registration confirmation of the subscriber telephone number includes first setting and inputting of the mode setting circuit (100). Means (100a) is set to an operation mode for performing initial registration, and a push button (PB) signal of the subscriber telephone number input from a telephone connected to the terminal terminal (T1) is transmitted to a number information setting circuit ( In 60), the digital signal is converted into a digital signal, stored in the number information storage circuit (70) via the CPU, and configured as a rewritable memory. It is characterized in that the stored contents are protected and the registration confirmation is confirmed using a display circuit (90) having a display means (90a).

In the number information transmission function line switch according to the embodiment of the present invention, the setting input means (100a) of the mode setting circuit (100) includes a DIP-SW type switch as shown in FIG. Adopted, provided on the back of the box housing the switch (1), and by the combination to be set, as the initial setting means, the operation mode with or without the connection device for DC loop creation, the initial registration and registration of the subscriber telephone number An operation mode for performing confirmation and an operation mode for executing the program control means as the switch are selected and initialized.

In the line switch of the number information transmitting function according to the embodiment of the present invention, a busy tone generating circuit (80) is provided to indicate when another terminal terminal (Tn) is in use of the line. Equipped with a circuit that generates a busy tone (intermittent tone at 400 Hz).

In the circuit switching device for transmitting number information according to the embodiment of the present invention, a display circuit (90) having a display means (90a) is provided, and the display circuit performs initial registration of the subscriber telephone number and stores the registered contents. Display driving function to confirm each digit at a predetermined time interval, display indicators such as 7 segments, display each busy state of connected devices, drive LED display lamps (P1, P2, P3), display drive function The display means is a single-digit display lamp such as these seven-segment and the LED type display lamp, and as shown in FIG. 1 (A), a box housing the switch (1). Provided in the plane of.

In the number information transmitting function line switch according to the embodiment of the present invention, the power supply circuit (120) is supplied from a 100V AC commercial power supply via a power supply cord (120a) as shown in FIG. Various DC voltages required for the switch (1) are provided.

In the number information transmission function line switch of the embodiment of the present invention, when the activation signal detection circuit (10) detects the information reception terminal activation signal, an incoming call from the line is sent to the CPU via the phototransistor. It has a function to notify that there is.

In the number information transmission function line switch of the embodiment of the present invention, the loop detection circuit (20) detects the change in the magnetic field by the Hall element through the inductance formed by the predetermined coil. Means to read the number information consisting of the incoming and outgoing numbers without affecting the various connected devices connected to the terminal terminal (Tn). Can be provided.

[0027] In the number information transmission function line switch of the embodiment of the present invention, the loop holding circuit (30) uses a transistor to form a DC loop circuit, and the polarity given to the transistor is controlled by diode bridge means. Fix it.

As shown in FIG. 3, in the number information transmission function line switch of the embodiment of the present invention, the execution of the program control means is performed in the step (S1): start signal detection step from the line terminal (L) in the start signal detection step. When the information receiving terminal activation signal arrives, the activation signal detection circuit (10) detects this, and then in step (S2): In a self-response process, a DC loop is created from the setting input means (100a) of the initial setting means. Refer to the operation mode for the presence / absence of a connected device to create a DC loop. When there is no connected device, that is, when the switch (1) itself needs to create a DC loop, read the number information, and perform self-response processing (Ye s) then proceeds to step (S3): DC loop creation step. Conversely, if there is a DC loop creation connection device (No), then step (S6): DC loop creation step Proceeding to the creation step, here step (S3): In the DC loop creation step, in order to perform the self-response processing for providing the primary response signal, the loop relay (RL) is activated and the loop holding circuit (30) Then, a DC loop is created at the local line terminal (L). Then, in step (S4): a number information capturing step, the number information from the local line terminal (L) is transmitted from the loop detection circuit (20). The number information is received through the number information receiving circuit (40), and then, in the step (S5): DC loop opening step, after the number information has been received, the loop holding circuit is shut off and opened. Step (S9): Proceed to the number information comparison process. Step (S2): In the self-response process, if there is a DC loop creation connection device (No), then proceed to Step (S6): DC loop creation process, where the terminal is connected to the terminal terminal (T1). In addition, the DC loop creation connection device waits until a DC loop is created (NO), and once a DC loop is created (Yes), then, in the step (S7): number information acquisition step, the station is connected. The number information from the line terminal (L) is fetched from the loop detection circuit (20) via the number information receiving circuit (40), and then the number information is fetched in the step (S8): DC loop opening step. Thereafter, the DC loop making connection device waits until the DC loop is released (NO), and once the DC loop is released (Yes), the next step (S9): comparison of the number information The incoming call number information received via the number information receiving circuit (40) is compared with the subscriber telephone number set in the number information storage circuit (70), and the terminal terminal (Tn) to be connected is connected. ) Is determined, and then the corresponding terminal selection relay (RA, RB, RC) of the connection circuit (50) is selected in the step (S10): line connection step, and the line terminal ( L) and the corresponding terminal terminal (Ti), and then step (S11): In the call process, a predetermined connected device receives a call signal via the central office terminal (L), After transmitting the response signal to secure the call state and end the call state, next, in step (S12): In the call end step, the connection circuit is returned to the initial state, and a series of the program control means is executed. finish.

[0029]

[Effect of the invention]

 The present invention is implemented in the form described above, and has the following effects.

Since the line switch of the present invention has a loop holding circuit and a loop detecting circuit having a means for reading the number information, a plurality of non-DC loops such as telephones and facsimile machines are created. Even if one DC loop making connection device such as a telephone having a number display function is connected to a predetermined terminal terminal, it does not use the loop holding circuit of the switch. In addition, the DC loop making connection device provides a primary response signal, and has the effect of reading the number information by the loop detection circuit. By using the loop holding circuit and the loop detection circuit, even if all connected devices are connected devices that create multiple non-DC loops, these devices can be switched freely. Has the effect of

[0031] The line switch of the number information transmission function of the present invention uses a loop detection circuit, and the impedance of this circuit to the line has the effect of being high impedance, and can be connected to various types of connected equipment connected to the terminal terminals. It is possible to provide a means for reading the number information including the incoming number and the outgoing number without affecting.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cut-out appearance plan view, FIG. Partly omitted appearance side view.

FIG. 2 is a schematic circuit block diagram of a number information transmission function line switch showing an embodiment of the present invention.

FIG. 3 is a schematic operation flowchart of a number information transmission function line switch showing an embodiment of the present invention;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 switch 1 a leg 10 start signal detection circuit 20 loop detection circuit 30 loop holding circuit 40 number information reception circuit 50 connection circuit 60 number information setting circuit 70 number information storage circuit 80 busy sound generation circuit 90 display circuit 90 a display means 100 mode Setting circuit 100a Setting input means 110 Control circuit 120 Power circuit 120a Power cord L Local line terminal T Terminal terminal (Tn) RL Loop relay RA, RB, RC Terminal selection relay

Claims (1)

[Utility model registration claims] 1. A telephone line terminal (L) for inputting and connecting a telephone number information transmitting function line for providing a telephone number information transmitting function service to a specific subscriber, and a telephone number information transmitting function service from the telephone line terminal. According to a plurality of terminal terminals (T
n) and outside the box housing the switch (1),
One of the connected devices, such as a telephone having a number display function, the connected device itself provides a primary response signal for DC loop creation to the terminal terminal corresponding to the number information transmission function service. A DC loop making connection device, even when the other connection device is a plurality of non-DC loop making connection devices such as a normal telephone / facsimile, these are switched by a program control means. A switching unit having a control unit (CPU) and a control circuit (110) having a storage means,
The switch includes a start signal detection circuit (10) for detecting an information reception terminal start signal of the number information transmission function service, and a loop detection circuit (20) having means for reading the number information of the number information transmission function service. A loop holding circuit (30) for providing a primary response signal for creating a DC loop to the local line terminal (L) in a switchable manner using a relay (RL);
An operation mode for use of the DC loop creation connection device, an operation mode for performing initial registration / registration confirmation of the subscriber telephone number, and an operation for executing the program control as the switching device, used as initial setting means for a predetermined mode A mode setting circuit (100) having setting input means (100a) for selecting and initializing a mode, and these circuits, a relay (RL) and a plurality of terminal selection relays (RA, RB, R
C) as a main circuit, a connection circuit (50) controlling the number information transmission function according to the program control means.