JPH0414946A - Communication time calculation system - Google Patents

Abstract

PURPOSE:To allow the system to cope with revision of its absolute time without giving effect on the capability of the exchange system by providing a counter receiving a clock of a basic timer accuracy, obtaining a difference of contents of the counter at start and end of the communication and calculating the communication time. CONSTITUTION:A counter 14 is provided, which receives a clock signal with the basic timer accuracy, and when a dialed call is connected to an opposite terminal equipment, a call processing unit 10 starts a connection processing section 12 of a communication time control section 11, reads a count of the counter 14 and writes it into a memory 15. When the communication of call is finished and the call is interrupted, an interrupt processing section 13 is started and a counter read means 131 reads an output of the counter 14 to store it and the count at the call connection stored in the memory 15 is read and a difference calculation means 133 calculates a difference between the read value and the count stored in the count read means 131. Thus, the communication time is calculated without giving effect on the revision of the absolute value non deteriorating the capability of the exchange processing.

Description

[Detailed Description of the Invention] [Summary 1: To provide a communication time calculation method that can cope with changes in absolute time such as time reversal regarding the communication time calculation method of the exchange system and does not affect the ability of the exchange system. year.

The call processing section of the exchange includes a communication time control section, a hardware counter that counts a clock signal of a fixed period, and a memory. The connection processing section reads the output of the counter when activated and stores it in the corresponding location in the memory, and the disconnection processing section reads the output of the counter when activated and stores it in the corresponding location in the memory. The communication time difference is determined by extracting the content stored in the location and determining the difference between the two.

[Industrial application field] The present invention relates to a communication time calculation method for an exchange.

In exchanges such as telephone exchanges and data exchanges, it is necessary to obtain the communication time of each communication call as billing information (except when billing is performed in proportion to the amount of data).

Although various methods for calculating communication time have been used in the past, it has been difficult to obtain accurate communication time using simple configurations and processing.

[Conventional technology] FIG. 4 is an explanatory diagram of a conventional example.

First, the method shown in A in FIG. 4 will be explained.

In this method, in the call processing device 40 of the exchange.

Hardware timer 4 representing absolute time as shown in the figure
1, the timer outputs the time of 2:01:1 minute and second (may include milliseconds) and is updated by a clock signal.

When the call processing device 40 connects the two outgoing calls to the called party, it reads the output of the timer 41 and stores it in the memory 42 as the connection time 421. After that, communication is executed and when the call is disconnected, the output of the timer 41 at that time is read and stored in the memory 42 as the disconnection time 422. Next, when the time difference between the stored disconnection time 422 and connection time 421 is determined by the calculation unit 43, the communication time 423 of the call is obtained.

Next, the method shown in FIG. 4B will be explained. In this method, the call processing device 50 is provided with a periodic activation task 51 that is activated at a constant cycle. On the other hand, connection, monitoring, disconnection, etc. are controlled for each call, and in order to control each call, a call control memory 52 is provided corresponding to each call ① to ＠.

Each call control memory 52 is provided with a counter 53. This counter 53 is counted as soon as the current call is connected to the other party, and thereafter is controlled by the periodic activation task 51. A counting operation is performed. The periodic activation task 51 is a constant cycle! tl! (for example, 100 milliseconds) to start and 7
The contents of the counter 53 in the control section memory are read out for a call in progress, and the contents of the counter 53 in the control section memory are incremented by +1 and written. When the call is disconnected, counting is stopped. The contents of the counter 53 represent the communication time of the call, and are read out and processed as billing information.

[Problem B to be solved by the invention] According to the conventional method shown in FIG. be. In other words, if the time is changed between the connection time and disconnection time of one communication,
The connection time and disconnection time are reversed or one communication time becomes excessive.

In addition, according to the method shown in Figure 4B, it is necessary to periodically count the counters for all calls handled by the processing equipment of this exchange, and as the number of handled calls increases, the communication time There is a problem in that the load due to calculation processing increases and the original exchange processing capacity of the exchange system decreases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a communication time calculation method that can accommodate absolute time changes such as time reversals and does not affect the performance of the switching system.

[Means to solve the problem] FIG. 1 is a diagram showing the basic configuration of the present invention.

In FIG. 1, 10 is a call processing device, 11 is a communication time control section, 12 is a connection processing section, 13 is a disconnection processing section, 14 is an input of the output of an oscillator supplied to a clock device that displays absolute time, Counter that updates counts with basic timer precision, 1
5 represents memory.

The present invention includes a counter that is updated with basic timer accuracy, and stores the output of the counter as connection time information at the start of one communication (when a call is connected). : At the time of termination (when the call is disconnected), the contents of the cough counter are read and the communication time is calculated by calculating the difference from the saved connection time information.

[Function] The counter 14 is a hardware counter that receives as input a clock signal of basic timer accuracy, which is the output of an oscillator (indicated by O3C) for a clock device (not shown) that displays absolute time.

The call processing device 10 processes the call and when the originated call is connected to the other party's terminal, the connection processing section 1 of the communication time control section 11
Start 2. In the connection processing section 12, the current count value of the counter 14 is read by the power reading means 121, and written into the area for the call in the memory 15 by the primary writing means 122.

The call processing device 10 activates the disconnection processing section 13 of the one communication time control section 11 when the call communication is completed and the call is disconnected. In the cutting processing section 13, the output of the counter 14 is read and held by the counter reading means 131. Next, the memory reading means 132 reads out the count value at the time of connection of the call stored in the memory 5, and the difference calculating means 13
Supply to 3. The difference calculating means 133 calculates the difference between this read value and the count value held in the counter reading means 131 to obtain the communication time, and one output is stored in the memory.

[Embodiment] FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is a processing flow of the embodiment.

FIG. 2 shows an example of a block configuration of a data exchange processing system. In the figure, 20 is a data exchange processing device, and 21 is a large number of lines (
(represented by Ll to Ln).

Each line 21 has a data processing device (not shown).
is connected, and the data transfer between the data terminal device of the outgoing line 1 and the data terminal device of the receiving side is performed by the data exchange processing device 2.
This is done via 0.

The call control unit 201 of the data exchange processing device 20 is configured by a program, and performs a connection process for connecting an outgoing call to a requested party, a process for data transfer via a memory (not shown), and a disconnection process for disconnecting the line. Control information for controlling each communication to be performed is stored in each call control information storage area (Ml to Mn) in the memory 205.

Further, the 3-clock device 202 uses the output of the 2-oscillation circuit 203 as an input source, and displays the absolute time that has been set using the prior art and updated with the precision of the 0-oscillation circuit 203.

The counting counter 204 is a counting counter that uses the output of the 1-oscillation circuit 203 as an input source, and has the same accuracy as the clock device 202, and updates the counter value at fixed time intervals (for example, 1 second). The counting counter 204 starts its counter updating operation when the exchange processing system is powered on.
Cycling within the range of this counter width (count capacity M),
The count value continues to be updated permanently.

The processing flow of the third embodiment will be explained with reference to FIG.

FIG. 3A shows the processing flow when a call is connected, and a call is made when the communication path between the data processing device of the originating line and the data processing device of the terminating line, which are accommodated in one data switching device 20, is connected. When detected by the control unit 201, the clock number counter 2
Read the count (directly (tl)) displayed at 04 (step 30). Karan HI read! ! (tl,)
is 1 The call control information storage area (Mi
(step 31).

When the data transfer between the data processing devices is completed, the call control unit 201 detects the disconnection of the communication.

The current count value (t
2) is read (step 32). Next, memory 2
The count value (tl) at the time of communication connection stored in the call control information storage area (Ml) of the call in 05 is retrieved, and the count (itl) is subtracted from the above count value t2 (
Step 33).

The communication time (t=t2-tl) obtained as a result is stored in the call control information storage area Mi (step 34).

By adding a series of processes like this to the conventional exchange processing operation for each call (communication), it is possible to update the communication time at regular intervals for each communication call without being affected by changes in absolute time. Communication time can be calculated without updating a counter for calculation.

In the above embodiment, an example of a data exchange processing system has been described, but a telephone exchange system that handles voice may also be used.
It is obvious that similar techniques can be used.

14: Counter 15: Memory [Effects of the Invention] According to the present invention, communication time calculation for each communication handled by the switching system is not affected by changes in absolute time, and processing at a constant cycle is performed for communication calls. It can be achieved without any need. As a result, even if the number of calls handled by the switching system increases,
The ability of the original exchange processing due to communication time calculation for each communication is not degraded.

Claims (1)

[Claims] In a communication time calculation method for an exchange, a communication time control unit (11) is provided in a call processing device (10) of the exchange.
, a counter (
14) and a memory (15), and the communication time control unit (11) includes a connection processing unit (12) activated by call connection processing and a disconnection processing unit (13) activated by call disconnection processing. , When the connection processing unit (12) is activated, the connection processing unit (12) executes the counter (14).
) and stores it in the corresponding location of the memory (15), and when the cutting processing unit (13) starts, the output of the counter (14) is read.
), the content stored in the corresponding location of the memory (15) is retrieved, and the difference between the two is calculated to determine the communication time.