JP2766932B2 - Line selection device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a line selection device.

[Prior Art] For example, there is a telephone as a communication device using a telephone line, while recently, a line for transmitting a signal for selecting one of a plurality of telephone lines respectively owned by a plurality of telecommunications carriers. Various selection devices have been proposed.

This line selection device is usually provided on a telephone line near a telephone, and inputs a dial signal from the telephone, and when a dial signal satisfies a predetermined condition, a predetermined communication carrier. A signal for identification, an individual information signal of the sender such as an ID signal, and the like are transmitted on the telephone line together with the dial signal. In addition, a line selection device that is capable of automatically selecting the lowest-charged telecommunications carrier according to the time has been proposed. In a line selection device having such a function, a download from a host center is required. A function to change internal data is built in.

[Problem to be Solved by the Invention] In the above-described line selection device, data that may be changed is stored in a RAM, and the data is, for example, a service that can be provided by a predetermined communication carrier. There are flag data and billing data corresponding to the area code.

Therefore, to change these data, RA
The data in M must be rewritten in some way.

However, if the data in the RAM is rewritten one by one for each line selection device, for example, it takes enormous time and is not practical. Also, the rewriting data is sent to each line selection device using a telephone line, and the
It is conceivable to rewrite the data in the RAM by the CPU or the like, but for that purpose, it is necessary to call each telephone connected to each line selection device and wait for the off-hook thereof, which is inefficient.

Accordingly, it is an object of the present invention to provide a line selection device which solves the above problems.

Means for Solving the Problems To achieve the above object, the present invention provides a clock means having a calendar function, a first storage means storing a plurality of different data, and a plurality of different data in the first storage means. Second storage means for storing a plurality of telephone numbers corresponding to each of the data; means for calling each telephone number in the second storage means at predetermined time intervals indicated by the clock means; Means for changing the data in the first storage means corresponding to the telephone number to the data sent from the called side when the called side goes off-hook by this time.

[Operation] According to the present invention, efficient data change processing and the like can be performed by the above configuration.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of a line selecting apparatus to which the present invention is applied. In the figure, reference numeral 1 denotes a pair of office line terminals, which connect a telephone line connected to an exchange of the office. Reference numeral 2 denotes a pair of telephone terminals, which are connected to the telephone.

The line terminal 1 and the telephone terminal 2 are connected via an a-side contact of a relay 3. The line terminal 1 has a transformer 4 for tone signal detection in parallel between the pair of terminals 1. Both ends of one winding 4A are connected. A photo MOS relay 5 is interposed between the one winding 4A and the terminal 1. The photo MOS relay 5 is opened and closed by a signal from a dial pulse output terminal of a CPU 6 to be described later. Is opened or closed between the local line side terminals 1. As a result, a dial pulse signal is transmitted from the line terminal 1 to the exchange.

Reference numeral 7 denotes a photocoupler for detecting a dial pulse signal input from the telephone to the telephone terminal 2 and an off / on hook of the telephone. The detection output signal is supplied to a dial pulse input terminal of the CPU 6 via an amplifier 8 with a filter. The signal is input to the (on / off) hook detection terminal of the CPU 6 via the amplifier 9 with a filter.

10 is a dialer, which is a dial tone (DTM
F) The dial tone signal is supplied to the other winding 4B of the transformer 4 based on the signal from the signal output terminal. Dialer 10
Is supplied to the line terminal 1 via the transformer 4 and sent out to the exchange through the telephone line. The tone signal input from the exchange side to the central office terminal 1 through the telephone line is input to the dial tone signal input terminal of the CPU 6 via the coupling capacitor 12 and the receiver amplifier 13. Further, the dial tone signal input from the telephone to the telephone terminal 2 is also transferred to the capacitor 12.
The signal is input to the dial tone signal input terminal of the CPU 6 via the amplifier 13.

Reference numeral 14 denotes a stabilized power supply circuit, which stabilizes an external direct current (DC) voltage input via a resistor 15 and supplies the stabilized voltage to each component of the line selection device. Reference numeral 20 denotes a relay driver controlled by a signal from the CPU 6, which drives the relay 3. When the relay 3 is connected to the a-side contact, the central office terminal 1 and the telephone terminal 2 conduct directly, while when connected to the b-side contact, the terminals 1 and 2 are open. The voltage stabilized by the stabilized power supply circuit 14 is supplied to the telephone from the telephone terminal 2 via the resistor 16 to the telephone terminal 2.

Reference numeral 17 denotes a ROM, which has storage areas for a program at the time of initial setting, a diagnostic program for the entire line selecting apparatus, a telephone number for failure service, all area codes, and a special telephone number.

 Reference numeral 18 denotes a clock device having a calendar function.

Reference numeral 19 denotes a RAM, which includes (1) a temporary data storage area, and (2) one of a plurality of telecommunications carriers regarding time.
Area storing selection information for selecting one, (3) flag data area in which an address corresponding to a specific area code and a special telephone number in ROM 17 is flagged, (4) each telecommunications carrier (5) An individual information area storing the identification number and the corresponding personal information number, (5) a control program area of the entire line selection device at the time of initial setting, (6) a billing data area, (7) a maintenance data area, (8) It has a telephone number area for flag service.

[Automatic Selection] Here, an operation of automatically selecting one of a plurality of telephone lines will be described.

First, when the telephone is on-hook, relay 3 is a
It is connected to the contact side, so that a signal from the exchange side is supplied to the telephone. When the telephone is called in the on-hook state, a ringing signal is input to the dial pulse or dial tone signal input terminal of the CPU 6, so that even if the telephone is off-hook in that state, the CPU 6
Does not switch the relay 3 and the contact a remains connected.

When the telephone is off-hook in a state of no ringing, the impedance between the pair of telephone terminals 2 changes from high impedance to low impedance, and an off-hook detection signal from the photocoupler 7 is input to the CPU 6 via the amplifiers 8 and 9. With this input, the CPU 6 sends a signal to the relay driver 20, and the relay 3 switches to the contact b side. As a result, the telephone and the office line are separated from each other, and a voltage stabilized by the stabilized power supply circuit 14 is supplied to the telephone. A dial signal from the telephone is supplied to the photocoupler 7 and the amplifier 8 when the telephone is in the form of a dial pulse signal. When the telephone is in the form of a dial tone (DTMF) signal, it is input to the CPU 6 via the capacitor 12 and the amplifier 13.

The CPU 6 refers to the flag data in the RAM 19, and when the number of the leading part in the dial signal from the telephone once stored in the RAM corresponds to a specific number (for example, a specific area code) where the flag is set, Based on the time information of the clock device 18 and the selection information in the RAM 19, the telephone line of the telecommunications carrier having the lowest charge at that time is determined, and an identification number for selecting the telephone line and a corresponding personal information number The dial number from the telephone is transmitted to the telephone line by the dialer 10 in the case of a tone signal and by the photo MOS relay 5 in the case of a dial pulse signal.

[Self-diagnosis] When a diagnosis start signal is output from the clock device 18 at predetermined intervals, the CPU 6 diagnoses each component of the line selection device for a failure based on a diagnosis program in the ROM 17.

FIG. 2 shows the relationship between a number of main line selection devices 100 and a host computer (HC) 200 as a source of various data. In the figure, HC 200 has a number of telephones 300i, 400i connected to telephones 300, 400 of two representative numbers, respectively.
The line selection device 100 connected to the telephone set 100i of each individual and the representative telephone sets 300 and 400 can communicate with each other via the telephone line and the central office 500.

In the system as described above, for example, the HC 200 transmits data for failure service with respect to each of the telephones 300i connected to the telephone 300 having one representative number, and transmits the data for the failure service with respect to each of the telephones 400i connected to the telephone 400 having the other representative number. Sends flag data.

[Flag Service] When a flag service request signal is generated at predetermined intervals from the clock device 18 in the line selection device 100i on the calling side, the CPU 6 sets the RA
The flag service telephone number in M19 is read, and the number is transmitted from the dialer 10 to the called telephone 400.
As a result, the telephone 400 having the corresponding representative number is called, and the telephone 400i connected to the telephone 400 is ringed. Even if the telephone 400i rings, if there is no change in the corresponding data, the HC200 leaves the ringing as it is (does not go off-hook). Then, the data is transmitted to the line selection device 100i on the calling side. In the line selection device 100i that has received the data, the CPU 6 overwrites the data in the flag data area in the RAM 19 by the CPU 6.

[Failure Service] In each line selection device, a failure service start signal is output from the clock device 18 at predetermined intervals, and if a failure has been detected by the failure service processing of the CPU 6, the CPU 6 reads the ROM 1
The telephone number for trouble service in 7 is read out, and the number is transmitted from the dialer 10. Thus, the telephone 300i connected to the telephone 300 having one representative number is ringed.

The HC 200 goes off-hook on the telephone 300i, inputs fault information from the line selection device, and transmits fault service data corresponding to the fault information in a predetermined order using a tone signal or the like. In response to this, on the line selection device side, the CPU 6 inputs the tone signal (data) sent from the HC 200 via the capacitor 12 and the amplifier 13 and temporarily stores it in the RAM 19,
Overwrite the corresponding area in AM19 and end the data change.

By storing the unified telephone number for each data processing in the storage means as described above, the data processing efficiency becomes extremely high, and the unified telephone number change,
Management is very easy.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide a line selection device that can perform maintenance management very easily.

[Brief description of the drawings]

 FIG. 1 is a block diagram of a line selection device to which the present invention is applied, and FIG. 2 is a diagram showing an outline of a system when data is changed.

Claims (1)

(57) [Claims] 1. Clock means having a calendar function, first storage means for storing a plurality of different data, and a plurality of telephone numbers corresponding to each of a plurality of different data in the first storage means. Means for calling each telephone number in the second storage means at predetermined time intervals indicated by the clock means, and when the called party goes off-hook until a predetermined time elapses from the call. Means for changing data in the first storage means corresponding to the telephone number to data sent from the called side.