JP2668012B2 - Automatic selection signal transmitter for telecommunications networks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention can transmit a signal for selecting a telecommunication line such as a telephone line used when talking with a predetermined called party. The present invention relates to a selection signal automatic transmission device for a telecommunications network. [Prior Art] Existing domestic telecommunications networks include those owned by Nippon Telegraph and Telephone Corporation (hereinafter referred to as "NTT"), but in addition to this, some telecommunications owned by other telecommunications carriers. A network is being set up. Therefore, if a telecommunications network is provided by a telecommunications carrier other than NTT, the telecommunications carrier other than NTT and subscribers to NTT must be
Either a communication line for diversion or a communication line of a telecommunications carrier other than NTT can be selected. [Problems to be Solved by the Invention] For example, when the above-mentioned subscriber tries to make a call from within Tokyo to Osaka using a communication line of a telecommunications carrier other than NTT, for example, Before dialing the area code (06), for example, a four-digit number for identifying a telecommunications carrier other than NTT (hereinafter referred to as an identification number)
Have to dial. That is, for example, You must dial a total of 13 numbers in a row. Therefore, in such a case, there is the following problem. (1) Since there are many numbers to be dialed, there is a high possibility that they will be mistaken. (2) It takes much time because there are many numbers to dial. (3) If there are multiple communication lines by multiple telecommunications carriers other than NTT, remember all the identification numbers corresponding to them, or select the identification number of one communication line to use ( Or memorize) (and therefore is cumbersome). (4) Since a dedicated NTT line can be used, the user should use a communication line of an electric signal provider other than NTT (hence, whether to add an identification number).
You must always be aware of whether or not to make a call. In other words, it takes time for the selection. Therefore, an object of the present invention is to solve the above problems, and when subscribers of at least two telecommunications carriers try to make a call to a predetermined area, for example,
An object of the present invention is to provide a device that requires only dialing without any troublesome work. [Means for Solving the Problems] The present invention is an automatic selection signal transmitting device for a telecommunication network used in a state of being connected to a telephone, and storing means for storing judgment information regarding an applicable area code. And a judging means for judging whether or not the leading part of the selection signal from the telephone corresponds to the applicable area code based on the judgment information in the storing means, If it is determined that the first part of the selection signal of the above corresponds to the applicable area code, the identification signal for connecting to a predetermined communication line is added to the selection signal to make a call, and the determination means When it is determined that the leading part of the selection signal from the telephone does not correspond to the applicable area code, in the telecommunication network selection signal automatic transmission device having a calling means for calling only the selection signal, The memory The means further stores determination information regarding the exemption number, and the determination means determines whether or not the leading part of the selection signal from the telephone corresponds to the applicable area code. Based on the judgment information in the storage means, the head portion determines whether or not the application exclusion number is present, and the calling means causes the determination means to exclude the top portion of the selection signal from the telephone. When it is determined that the selected portion corresponds to the number, the determination means does not determine whether or not the leading portion corresponds to the applicable area code, and only the selection signal is called. [Operation] According to the present invention, by simply dialing the telephone number of the other party (called side) from the telephone, the telephone number dialed with the information for connecting to a predetermined communication line, etc. When a call is selectively added and dialed, and only a dialed number is dialed, only the dialed number is automatically dialed. FIG. 1 shows an embodiment of the present invention. In FIG.
Reference numeral 1 denotes a telephone equipped with a handset and further provided with a push button or a dial, which generates a tone signal (a signal in an audible frequency band) in the case of a push button type as a selection signal and a serial pulse signal in the case of a dial type Occurs. 2 is an exchange owned by NTT, and 3 is an exchange owned by a telecommunications carrier other than NTT. Two signal lines from the telephone 1 are connected to a telephone terminal 4, and a communication line (two signal lines) 2A from the exchange 2 owned by NTT is connected to an exchange terminal 5. Both terminals 4 and 5 are 2
Are connected by two signal lines 6 and 7, and a coil L is placed on both signal lines 6 and 7.
A T-type smoothing circuit including 1, L2 and a capacitor C is provided. Signals are transmitted between the telephone 1 and the exchange 2 via the communication line 2A, the signal lines 6 and 7, and a closed switch SW1A for bypassing the T-type smoothing circuit. The switches SW1A, SW1B, SW2 and SW3 are controlled to be opened and closed by the CPU 12. Switches SW1A and SW1B are linked so that when one is closed, the other is open. Reference numeral 8 denotes a first bridge circuit composed of four diodes, which connects two intermediate terminals to two signal lines 6, 7 between the telephone terminal 4 and the T-type smoothing circuit. Therefore, a positive DC voltage is obtained at the cathode terminal of the bridge circuit 8 regardless of which of the signal lines 6 and 7 is on the plus side and in any state of the switches SW1A and SW1B. When SW1A is open and switch SW1B is closed, a signal component from telephone 1 is obtained, and when switch SW1A is closed and switch SW1B is open, signal components from telephone 1 and the exchange are obtained. Reference numeral 9 denotes a second bridge circuit composed of four diodes, and connects two intermediate terminals to two signal lines 6, 7 between the exchange side terminal 5 and the T-type smoothing circuit. Reference numeral 10 denotes a decoder, which converts a tone signal as a serial selection signal from the telephone 1 through a DC component cutting capacitor C2 connected to a bridge circuit 8 and a cursor side terminal of the circuit 8 into a serial digital signal. Convert to a signal and output. 11 is serial / parallel (S / P)
The converter converts a serial digital signal from the decoder 10 into a parallel digital signal. Reference numeral 12 is a CPU, and an input terminal T1 for inputting a parallel digital signal from the S / P converter 11 and an input terminal for inputting a serial pulse signal from the telephone 1 when the telephone 1 is a dial type.
P1; an output terminal T2 for outputting a parallel digital signal; and an output terminal P2 for outputting a serial pulse signal. 13
Is the area where the program at the time of initialization is stored.
Area for storing the control procedure as shown in FIGS. 4 and 5 for controlling the CPU, area for storing the program for determining the input / output signal of the CPU 12, and area for storing the predetermined area code information A ROM 14 having a station number information storage area and an area storing a specific number as will be described later is an area for temporarily storing digital signals from the S / P converter 11 and at least one telecommunications other than NTT. A flag area storing information for judging an applicable area code for an operator, an area storing identification number information, and at least one telecommunications operator other than NTT in an area storing a specific number in the ROM 13 This is a RAM having a one-flag area or the like in which information for determining a corresponding specific number is stored. Initialization of the RAM 14 is performed by the CPU 12 via the switch 3, line 2B, switch 2, line 2A, etc.
This is performed based on the control signal from the host computer 18 input to the host computer 18. Prior to executing the control procedure as shown in FIGS. 4 and 5, the CPU 12 has two input terminals T1 and
Of the P1, the subsequent processing is performed by adopting the signal input earlier in time, and the output terminal T2 (in this case, a parallel digital signal) or the output terminal T2 in a form corresponding to the signal input earlier in time. A signal is output from the output terminal P2 (in this case, a serial pulse signal). 15 is a parallel / serial (P / S) converter,
The parallel selection signal from 12 (or a signal obtained by adding an identification signal to the selection signal) is converted into a serial digital signal. Reference numeral 16 is an encoder, which converts the serial digital signal from the P / S converter 15 into a tone signal corresponding to the form of the output signal of the telephone 1, and transmits this to the NTT switch 2 via the bridge circuit 9. Send out. The signal from the exchange 2 is input to the exchange 3 via, for example, the NTT communication line 2B, and is sent out to the called station side. The DC voltage taken from the cathode terminal of the bridge circuit 8 is applied to the power supply terminals of the components 10, 11, 12, 13, 14, 15, and 16. R1 is a resistor having a high resistance value (for example, 1 MΩ) provided on the signal line 6. When a switch SW2 provided in parallel with this is opened, at least a current sufficient to back up the RAM 14 flows. When the selection switch 17 described later selects NTT and when the telephone 1 does not dial 0 for the first time when off-hook, the CPU 12 closes the switch SW1A and the switch SW1B.
Is open, switch SW2 is closed, and switch SW3 is kept open. A resistor R2 having a value substantially equal to the impedance of the telephone 1 when the telephone 1 is off-hook is connected to the switch SW3, and these series circuits are connected between the signal lines 6 and 7. By the way,
When the telephone 1 is on-hook, the impedance between the signal lines 6 and 7 is high impedance (thus, only a very small current can be taken out between the signal lines 6 and 7) and the high voltage (for example, 80V)
), And the respective elements 10, 11, 12, 13, 14, 15, 16 are in a standby state (however, at least the RAM 14 is backed up). The following information is stored in the ROM 13 and the RAM 14 as shown in FIG. That is, ROM1
3 has an area code information storage area for storing all area codes in Japan and an application exclusion number information storage area.
The RAM 14 has a selection information storage area for storing selection information from a selection switch 17 for selecting one of a plurality of telecommunications carriers other than NTT and a non-NTT telecommunications carrier, and the CPU 12 based on the information in the selection information storage area. A plurality of flag areas storing information indicating an applicable area code for each telecommunications carrier to be selected,
An identification number storage area storing the identification numbers of the plurality of telecommunications carriers, and information indicating a corresponding application exclusion number for each telecommunications carrier selected by the CPU 12 based on the information in the selection information storage area. And a plurality of flag areas storing the same. As shown in FIG. 2, the area code information storage area of the ROM 13 stores two-, three-, and four-digit area code information in order from the head address, and the flag area I of the RAM 14 (selection switch). 17) (corresponding to the telecommunications carrier selected by 17), one bit (that is, from the top address) in order from the top address (that is, each address corresponds to the address of each area code in the area code information storage area of the ROM 13) , “0” or “1” information is stored. When this information is “0”, it indicates that the corresponding telecommunications carrier does not use the corresponding area code in the area code information storage area of ROM13, and when this information is “1”, the same telecommunications carrier uses the same city code. Indicates that an area code is used. Similarly, the application exclusion number information storage area of the ROM 13 stores application exclusion number information in order from the top address,
In the flag area A of the RAM 14 (corresponding to the telecommunications carrier selected by the selection switch 17), each address is stored in the ROM1.
One-bit information is stored in order from the top address so as to correspond to the address of each application exclusion number in the application exclusion number information storage area of No. 3. When this information is “0”, it indicates that the applicable telecommunications carrier handles the corresponding exemption number in the application exemption number information storage area of ROM13, and when this information is “1”, it is applied by the same carrier. Indicates that the exclusion number is not handled (that is, excluded). Reference numeral 18 denotes a host computer connected to the exchange 3 and is a tone signal as a control signal from the host computer (as will be described later, for example, control relating to an area code or exemption number to be added or deleted by a predetermined telecommunications carrier). Signal) via exchanges 3 and 2 and signal line 6,
7, Bridge circuit 8, Capacitor C2, Decoder 10, S / P converter 1
The information is input to the CPU 12 via 1 and the storage information in the RAM 14 is changed as described later. When the telephone 1 is a push button type, the tone signals (signals within the audible frequency band) input from the telephone 1 to the decoder 10 are the number of dial buttons as indicated by the portion surrounded by the solid line in FIG. That is, although the decoder 10 has twelve different tones, the decoder 10 can further decode tone signals of four different tones.
Incidentally, these four tone signals can be generated in the telephone 1 (this is temporarily defined as A, B, C, D as shown in a portion surrounded by a dotted line in FIG. 3), and It can be transmitted by a communication line and can process data. Therefore, the decoder 10 converts these 16 tone signals into 4
Bits can be decoded into serial data having different bits, which are converted into parallel data by the S / P converter 11 and input to the CPU 12. Next, the operation of the CPU 12 when rewriting the applicable area code will be described with reference to FIG. For example, an operator (or host computer 18 or the like) of a predetermined telecommunications carrier other than NTT may
By calling the telephone 1 of a subscriber who has subscribed to an operator other than T, the telephone 1 is changed from on-hook to off-hook, so that the telephone 1 and the operator other than NTT have communication lines 2A, 2B, It is connected through the exchanges 2 and 3. In addition,
Due to this off-hook, the low impedance of the telephone set 1 is loaded between the signal lines 6 and 7, so that the DC voltage between the signal lines becomes a low voltage (for example, about 6 V). The voltage is applied to each of the elements 10 to 17, and the respective elements are brought into an operation state. Further, from the host computer 18 that has confirmed off-hook at the time of this off-hook, the CPU 1
A control signal for closing the switch SW3 is sent to 2 to close the switch SW3. Thus, even if the telephone 1 is subsequently on-hook, the signal line 6,
The off-hook state is maintained for 7 seconds. Then, for example, the operator of the business operator can notify the user of the telephone 1 of the change of the area code to be applied (service available to the business operator), whereby the user knows that. For example, by operating the selection switch 17, the operator is selected, and the telephone 1 is turned on (the signal line 6, 7 is off-hook). Next, the host computer 18 sends a control signal for rewriting the area code to the telephone 1 side. First, in step S1, it is determined within a predetermined time whether a tone signal has been input from the host computer 18 as a control signal for rewriting an area code. As this control signal, for example, a tone signal indicating DDA (see FIG. 3) which is not generated from the telephone 1 is applied. When such a control signal is input, step
Proceed to S2, where the storage information in the corresponding flag area of the RAM 14 is changed. A serial tone signal of a number corresponding to the number of addresses of the flag area (here, I) of the corresponding business operator in the RAM 14 from the business host computer 18 is input to the decoder 10. The tone signal is input to the S / P converter 11, and is sequentially input to the CPU 12 as a 4-bit parallel digital signal from the S / P converter 11.
4 and the contents are rewritten four addresses at a time starting from the head address of the flag area I. For example, if FIG. 2 shows a state where rewriting has been completed, it can be understood that the area code "06" in the ROM 13 has become the applicable area code in this state. Then, proceed to step S3. First, in step S3, the flag area I
Data of all addresses in the RAM and add the sum to RAM1
Remember in 4. It should be noted that the host computer 18 also stores the total sum of the rewrite data for the flag area I. Next, in step S4, the lower two digits of the total value stored in the RAM 14 and the lower two digits of the added total value transmitted by the tone signal from the host computer 18 (decoder 10, S / P conversion) Is obtained through the device 11). If a match is determined, the process proceeds to step S5 where the P / S converter 1
5. The data is transmitted to the host computer 18 via the encoder 16, and the processing is terminated. If a mismatch is determined in step S4, the process proceeds to step S6, where a signal indicating the mismatch is sent to the host computer 18 via the P / S converter 15, the encoder 16, and the like, and then returns to step S1. When a mismatch signal is input from the telephone 1, the host computer 18 sends a control signal for confirming the area code to the telephone 1.
When the host computer 18 repeats the above operation and receives a mismatch signal, for example, three times, it determines that the device of the present invention relating to the telephone 1 is out of order and takes appropriate processing. The change in step S2 is, for example, adding or deleting an applicable area code as described above.
Further, for example, the same applies to adding a new identification number in the identification number storage area, or deleting some identification numbers from the area, changing the contents of the flag area A, and initializing the RAM 14. Next, the operation of the CPU 12 at the time of calling will be described with reference to FIG. The CPU 12 sets the telephone 1 to the off-hook state and the selection switch 17
Starts when the user selects something other than NTT. At this time,
The switch SW1A is closed, SW1B is open, SW2 is closed, and SW3 is open.
In step S11, it is determined whether or not a selection signal from the telephone 1 has been input. If so, the process proceeds to step S12, where it is determined whether or not the head of the input selection signal is "0" (dial number). ”, The call is made to the city (for example, a case where a call is made from the calling party's Tokyo 23 wards to the called party's Tokyo 23 wards), and the processing ends. In this case, the selection signal is transmitted via the signal lines 6 and 7 (the head of the input selection signal has already been transmitted at the time of step S11). If the beginning is "0" in step S12, the process proceeds to step S13, where the switch SW1A is changed from closed to open, and the switch SW1B is turned on.
Switch from open to closed. As a result, the direct transmission of the tone signal from the telephone 1 to the exchange 2 is substantially prevented. Next, in step S14, the selection signals (including the head) from the telephone 1 are sequentially stored in the RAM 14, and
Go to 5. In step S15, a flag area (for example, A in FIG. 2) for judging the application exclusion number corresponding to the telecommunications carrier selected by the selection switch 17 of the RAM 14 is searched, and "1" is stored in the area.
It is determined whether or not there is a selection signal (head portion) input from the telephone 1 in the application exclusion number information storage area of the ROM 13 corresponding to the address where is stored. Step if the part is "030"
Proceed to S18, but if there is no corresponding number, go to step S
Proceed to 16. In step S16, a flag area (for example, I in FIG. 2) corresponding to the telecommunications carrier selected by the selection switch 17 of the RAM 14 is searched, and the city of the ROM 13 corresponding to the address where "1" is stored in the area is searched. Telephone 1 in the area code information storage area
It is determined whether or not there is a selection signal (area code) input from, and if there is a corresponding area code, the process proceeds to step S17. In step S17, the identification number (for the business operator based on the information in the identification signal information storage area) is added before the selection signal from the telephone 1 in the RAM 14, and the process proceeds to step S18. If there is no corresponding area code in step S16, the process proceeds to step S18. In step S18, a time-out signal (for example, an intermittent signal having a frequency of 400 Hz) is sent from the exchange side to the decoder 10, S / P
It is determined whether the input has been made via the converter 11, and if not, the process proceeds to step S21. If a timeout signal has been input in step S18, the process proceeds to step S19, where it is determined whether or not all dialing operations have been completed. This determination can be made, for example, based on whether the total number of (the number of area codes (different according to the area code) + the number of city codes + the number of subscribers) is dialed (whether stored in the RAM). If, for example, 20 seconds elapse between each dial (operation), it is determined that the dial operation is not completed. Therefore, step S19
If the dialing operation is completed in step, the process proceeds to step S20. If the dialing operation is not completed, the process ends (for example, the switches SW1A and SW1B return to the original state and return to the start). In step S20, the switch SW2 in the closed state is once opened (that is, it is the same as the telephone 1 being on-hook when viewed from the exchange side), and then the switch SW2.
2 is closed (that is, it is the same as telephone 1 going off-hook when viewed from the exchange side). As a result, a state in which recall is possible is established. Then, in step S21, the storage number (only the selection number or the identification number + selection number) in the RAM 14 is input from the output terminal T2 to the P / S converter 7, encoder 16, bridge circuit 9 when the telephone 1 is a push button type. When the telephone 1 is a dial type, the output is sent from the output terminal P2 to the exchange via the bridge circuit 9 and the like, and the processing is terminated. Here, when there is no input of the timeout signal in step S18, since the leading “0” of the transmission number has already been transmitted,
Those corresponding to this "0" are not transmitted. Further, when a time-out signal is input in step S18, all the storage numbers in the RAM 14 are sent out since the on-hook state is once set in step S20. [Other Embodiments] FIG. 6 shows a part of the RAM 14 according to another embodiment. Other configurations are the same as those in FIG. That is, as shown in FIG. 6, a flag area including three flags for three types of selection signals is provided in the RAM 14, and the flag area corresponds to one of the three types of selection signals of 10 pps type, 20 pps type and tone. "1" is stored in the flag to execute. This storage operation is performed when the RAM 14 or the like is initialized by a control signal from the host computer 18. That is, 10 pps for dial-type telephone 1
Expression or 20 pps expression depends on the N to which the telephone 1 is connected.
Since it is uniquely determined according to the exchange 2 owned by TT, by inputting a control signal for initialization from the host computer 18 to the CPU 12 via the exchanges 3 and 2,
“1” can be stored in the corresponding flag. By the way, in FIG. 6, since "1" is stored in the place of the tone, the CPU 12 performs the initialization after the initialization as shown in FIGS.
Prior to executing the procedure shown in the figure, the selection signal (tone signal) from the telephone 1 can be easily processed only by referring to the flag area for the selection signal, and the call can be originated by the tone signal. . FIG. 7 to FIG. 12 are views showing the above-described embodiments of the present invention incorporated in a telephone body, or externally attached as an adapter outside the telephone body, and further attached to a private branch exchange. . In each figure, the switch is
This is the same as the selection switch in the above embodiment. The adapter is, for example, the components 4 to 17, L1, L2, C1, C in the above embodiment.
2, R1, R2, SW1A, SW1B, SW2 and SW3. EFFECTS OF THE INVENTION According to the present invention, by dialing the telephone number of the other party (called side) from the telephone, the telephone number dialed with the information for connecting to the predetermined communication line can be changed to the dialed number. Accordingly, it is possible to provide an automatic transmission device in which only the dialed number is automatically called when the exemption number is dialed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is an area explanatory diagram of a storage means, FIG. 3 is an explanatory diagram of a dial on a telephone, and FIGS. 4 and 5 are FIG. 6 is a diagram showing a part of a RAM, and FIGS. 7 to 12 are diagrams showing various aspects of a telephone structure.

Claims (1)

(57) [Claims] An automatic selection signal transmitter for a telecommunication network used in a state of being connected to a telephone, wherein a storage means for storing judgment information regarding an applicable area code and a leading portion of the selection signal from the telephone are Determining means for determining whether or not the applicable area code corresponds to the applicable area code based on the determination information in the storage means, and the first part of the selection signal from the telephone by the determining means is the applicable area code If it is determined that the selected signal is applicable, the identification signal for connecting to a predetermined communication line is added to the selection signal to make a call, and the determination means causes the beginning portion of the selection signal from the telephone to be an applicable inter-city station. If it is determined that the selection number does not apply, in the telecommunication network selection signal automatic transmission device having a calling means for calling only the selection signal, the storage means further determines the exclusion number. Before storing the information, the determination means determines whether or not the head portion of the selection signal from the telephone corresponds to the applicable area code, and the head portion is stored in the storage means. Based on the determination information, it is determined whether the exemption number is applicable, and the calling unit determines that the determination unit determines that the leading portion of the selection signal from the telephone corresponds to the exemption number. An automatic selection signal transmission device for a telecommunication network, wherein only the selection signal is called without judging whether the leading portion corresponds to the applicable area code by the judging means.