JPS60263597A - Dial translating device - Google Patents

Abstract

PURPOSE:To make quickly the translation of dial number and to lighten the burden on software by stopping a regular counter by a coincidence signal outputted from a comparator circuit, and outputting the counted value at that time as a translation code. CONSTITUTION:When a dial translation request unit 101 receives a destination dial signal, and stores the destination number in a register 203, and sets an FF 106, an AND gate 113 is opened and clock signals 107 are inputted successively in a counter 105. If, for instance, the destination dial number stored in the register 103 is C, a comparator circuit 108 compares the content of the register 103 and a memory read signal 109 and detects coincidence, and outputs a coincidence detection signal 111. Thus, the FF106 is reset and the counter 105 is stopped and the notice is given to a dial translation accepting unit 112 by interruption. At this time, the counter output 110 is translation code of the subscriber number C, and the unit 112 is informed of the translation code by this, and transfers it to a succeeding device.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a method for translating a destination dial signal transmitted from a terminal device connected to an exchange into a translation code convenient for performing certain types of processing. The present invention relates to a dial translation device.

BACKGROUND ART Conventionally, in this type of translation, software first indexes a dial translation table using the first digit dial number, and then further indexes the dial translation table using the second digit dial number as an address signal. By sequentially referring to the table digit by digit, the translated logic code is determined.

On the other hand, in electronic devices constituting a storage exchange, a network is generally constructed of a plurality of meters, and the number of subscriber dial digits handled by each notebook increases as the number of subscribers increases. Alternatively, a dial number with a sufficiently large number of digits must be used from the beginning to cover the maximum expected number of subscribers. Therefore, the conventional method of indexing a translation table by dial number requires a huge translation table, which takes up space in the main memory of an electronic device, and also requires a long time for translation, impairing real-time performance. It has the disadvantage of being exposed. In particular, with electronic devices that have a broadcast communication function, if the number of destinations n to be handled in one call is large, the number of destination dial translations becomes enormous, and the translation time increases.
This is a serious obstacle in building online systems.

OBJECTS OF THE INVENTION An object of the present invention is to provide a dial translation device capable of solving the above-mentioned conventional drawbacks, quickly translating dial numbers, and extremely reducing the burden on translation software and processing time. Our goal is to provide the following.

Structure of the Invention The dial translation device of the present invention includes a destination number register for storing destination dialed numbers sent from terminal equipment connected to an exchange, and a destination number register for arranging and storing subscriber numbers of a limited type. a sequential counter that is incremented by a clock signal and outputs a read address signal of the memory, and a comparison circuit that compares the contents read from the memory and the contents of the destination number register to detect a match. , the sequential counter is stopped by a coincidence detection signal outputted from the comparison circuit, and the count value at this time is outputted as a translated code.

Embodiments of the Invention Next, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention.

That is, the dial translation request unit 101 is connected to an exchange (not shown), monitors the destination dial from the caller, and when receiving the destination dial, sends the dialed number to the destination number register 103 through the full-digit data bus 102. Store in. The destination number register 103 is
For example, it is a 40-bit register with 4 bits per digit, and can store a 10-digit dial number.

The memory 104 stores a certain type of subscriber number, for example, a subscriber number (including the station number to which it belongs) of a facsimile terminal that receives a store-and-forward service, arranged at each address position. This address corresponds to the translation code of the subscriber number stored at that address. Therefore, if the number of destination terminals to which translation is desired is, for example, 409 B terminals or less, a 4098×40 bit read-only memory or random access memory may be used. The translation code is determined for convenience in subsequent processing, but in the above case, translation codes from 0 to 4098 are obtained. This makes it possible to identify, for example, the destination exchange to which the other subscriber belongs, the model of the other subscriber, the transmission speed, etc. When a random access memory is used as the memory 104, it is possible to add or change the subscriber number registered in the memory 104. However, dial translation request unit) 1
Although it is necessary to provide a memory write circuit from 01 to memory 104, it is sufficient to use a normal write circuit, so it is not shown in FIG. 1 and its explanation will be omitted.

FIG. 2 is a diagram showing an example of the configuration of the memory 104.
Each address shown in decimal notation from 000 to nnn has a 10-digit subscriber number A, B, corresponding to a translation code (1 digit, 4 bits).

C9..., X, Y are stored. memory 1
The maximum value of the 04 address is determined by the number of terminals that require translation.For example, if the number of destination terminals receiving the FAX signal store-and-forward service is 4088 or less, the memory address range is 1B. In decimal display, 000 to 8FF
It is.

Sequential counter 105 is a counter that is incremented by a clock signal input through AND gate 113, and its output is used as a read address signal for memory 104.

The translation start flip-flop 106 is set by the dial translation request unit 101 when the dial translation request unit 101 finishes setting the destination dial number in the destination number register 103, and opens the AND gate 113. Match detection signal 1
Reset by 11.

Ru.

Comparison circuit 108 compares the data read from memory 104 and the content stored in destination number register 103, and when a match is detected, outputs a match detection signal 111 and interrupts the dial translation reception unit [12]. Translation start flip-flop 10B is reset. Therefore, the dial translation reception unit 112 can read the translation code based on the counter output 110 of the sequential counter 105 at this time. The translation code will be used in subsequent processing.
It is used to identify the destination subscriber's model, affiliated exchange, etc., and performs the necessary processing for each, such as selecting the outgoing line, etc.
Setting and converting the transmission data format, determining the transmission speed, etc. are performed.

Next, the operation of this embodiment will be explained. When the dial translation request unit 101 receives the destination dial signal, stores the destination number in the all-digit destination number register 103, and sets the translation start flip-flop 10B, the AND gate 113 is opened and the clock signal 107 is sequentially input to the counter 1.
05 is input. The sequential counter 105 is incremented by the clock signal 107, and the subscriber number stored in the memory 104 is sequentially read out. For example, when the output of the sequential counter 105 becomes 002, the memory 1
Subscriber number C is read from address 002 of 04. now,
Assuming that the destination dial number stored in the destination number register 103 is C, the comparison circuit 108 compares the contents of the destination number register 103 and the memory read signal 108 to detect a match, and outputs the match detection signal 111. By outputting, the translation start flip-flop 10B is reset and the counter 105 is sequentially stopped, and the dial translation reception unit 112 is notified by an interrupt. The counter output 110 at this time is the translated code of the subscriber number C, and the dial translation reception unit 112 knows the translated code from this and transfers it to a subsequent device (not shown). If the comparison circuit 108 does not detect a match even after the counter 105 has counted up to the maximum value and all the subscriber numbers stored in the memory 104 have been read out, the destination dialed number stored in the destination number register 103 is This is not a destination number targeted by the device, but a regular telephone number, for example.

FIG. 3 is a time chart showing signals of various parts in this embodiment. The same rgJ(A) is a translation start flip-flop 10
(B) shows the output of the sequential counter 105, and (C) shows the coincidence detection signal 1.11. The translation speed of this device is determined by the speed of the clock signal 107 and the amount of addresses in the memory 104, and does not change depending on the number of digits in the destination dial. Therefore, even if the destination dial number has many digits, it can be translated quickly. For example, if the period of the clock signal 107 is
00 ns, and the maximum number of target terminals is 4096, the maximum translation time is approximately 0.41 m5.Even if there are many destinations, such as in 6-round communication, the above operation should be executed as many times as the specified number of broadcast destinations. Therefore, it is possible to quickly enter the translation code for each destination number. Also,
The comparison circuit 10 includes a plurality of destination number registers 103.
8 is the contents of the plurality of destination number registers 103 and the memory 10
By comparing the data read out from the memory 104 with the data read out from the memory 104, it is possible to perform translations for a large number of destinations within the time it takes to read one round of the memory 104.

In addition, the subscriber numbers stored in memory l(+4) are not limited to subscriber numbers that receive a specific type of service, but can also store a mixture of multiple types of subscriber numbers that require translation. For example, the FAX subscriber number and the subscriber number for forwarding service may be mixed. In this case, the subsequent device can forward to a predetermined forwarding destination according to the translation code. It becomes possible.

Effects of the Invention As described above, the present invention includes a memory that stores a subscriber number that requires translation at an address corresponding to a translated code, a sequential counter that outputs a read address signal of the memory, and a and a destination register for storing a destination tire number from the memory, and is configured to output a translation code according to an output signal of the sequential counter when the read data sequentially read from the memory matches the contents of the destination register. Therefore, even if the destination dialed number has many digits, it can be translated quickly.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a diagram showing the structure of a memory in the above embodiment, and FIG. 3 is a time chart showing signals of various parts in the above embodiment. In the figure, 101: dial translation request unit, 10
2: Data bus 102, 103: Destination number register,
104: Memory, 105: Sequential counter, 108: Translation start flip-flop, 107: Clock signal, 108
: Comparison circuit, 109: Memory read signal, 110: Counter output signal, 111 D-coincidence detection signal, 112: Dial translation reception unit, 113: AND gate. Applicant: NEC Corporation Agent: Patent Attorney: Toshimune Sumita

Claims (1)

[Claims] a destination number register for storing destination dialed numbers originating from terminal equipment connected to the exchange; a memory in which subscriber numbers of a certain limited type are arranged and stored; and the memory incremented by a clock signal. a sequential counter that outputs a read address signal, and a comparison circuit that compares the content read from the memory and the content of the destination number register to detect a match, and a comparison circuit that detects a match by comparing the content read from the memory and the content of the destination number register. A dial translation device characterized in that the sequential counter is stopped and the next count value is output as a translation code.