JPH01188161A - System for calculating call frequency - Google Patents

Abstract

PURPOSE:To shorten a processing time by storing a band code to a call route, which is spread over the lines of plural telephone companies, and a unit time frequency in the band code to a memory (table) in advance and obtaining the unit time frequency of the all route with the reference of this memory. CONSTITUTION:The band code between subscriber connecting telephone stations C/O(A) and (B) and POI stations C/O(C) and (H), the band code mutually between the POI stations C/O(C) and (H) and the unit time frequency are stored to a memory 4 in a table form in advance. Then, the unit time frequency in the band code is obtained by the reference of the memory 4 and summarized. Thus, since the calculation of the unit time frequency in a non-trunk route is executed by the reference of information to be stored to the memory 4 in advance, in comparison with a conventional method by operation based on a station square number, the processing time is extremely shortened.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a method for calculating the number of calls required per unit time for a call route when the call route is set via lines of multiple telephone companies. It is related to the required method, especially in telephone switching systems or telephones, LCR (
The present invention relates to a call frequency calculation method used when comparing call costs of different call routes when automatically selecting the lowest cost call route.

[Background of the invention and prior art] In recent years, a system of multiple telephone companies has been established in Japan, and when making a long-distance call, for example, taking into account call costs, the caller side has to choose multiple call routes (telephone companies). You can now choose any call route from your phone company.

A telephone line network that allows the caller to select a call route is constructed as shown in FIG. That is,
Private telephone exchange system (private branch exchange, key telephone equipment, etc.) PBX or telephone equipment 2, etc., subscriber terminal is subscriber SU
B+ (PBX), 5ua21. = Local line LA1 of the telephone company (Nippon Telegraph and Telephone Corporation, hereinafter referred to as the core company) that owns the line to be connected. It is coupled to the telephone offices (subscriber connection telephone offices) C10(A) and C10(B) via LA2.

When subscribers SOB and SUB are located outside each other's area, telephone station c10 (A) and telephone station C10 (
In addition to the route via the core company's own long-distance line LA (hereinafter referred to as the core route), the long-distance route connecting between 2
Or route via long distance line LB, LC, LD of a third telephone company (Daiden Denden Co., Ltd., Japan Telecom Co., Ltd., Japan High Speed Communication Co., Ltd., etc., hereinafter referred to as non-core company) (hereinafter referred to as non-core company). ), and these non-core routes LB, LC, and LD are each called the central telephone station C10 ((:
), (: between 10 (F), telephone office C/(1(1))
, between C10(G) and between central office c10(E).

[ ; 10 (H) and subscriber 5UBI (P
BX) (7) Affiliated layer C10(A) and each telephone station Cl above
0(C), Cl0(DJ, Cl0(E)) and subscriber SOB's belonging layer C10(B) and each of the above telephone stations Cl0(F), (:10(G), ClQ(F) and The lines between are the core company lines (local or long-distance lines) LA
, ~t, are connected by Aa.

The telephone office (
Line connection telephone office) Cl0((:)~C10()l) is called PO2 station (Paint of Interface), and these 201 stations may be set at the same telephone station for multiple non-core companies. In some cases, the number of telephone stations connected to subscribers is 201. In addition, telephone station C10 (A
) to C10()I) are all currently owned by the core company.

In the telephone office line network explained above, the backbone route LA
The charge for long-distance calls via ``Long-distance Calls'' will be the amount corresponding to the length of the core route A, but for non-core routes LB, LC, LD.
Charges for long distance calls via the relevant non-core route LB,
L(:, Add charges corresponding to the length of lines LA3 to LA and LA8 to LAa from the subscriber to each Pot station C10 (C) to Co (H) to the charges corresponding to the length of LD. The amount will be the amount

Conventionally, call charges are calculated in the following manner when automatically selecting the lowest cost call route (so-called TCP: least cost route). In other words, in order to calculate call charges, the telephone line network is divided into sections with a constant pressure of 11 (2 km) in the X-axis and Y-axis directions on the orthogonal coordinates, and the telephone offices located in each of these divided areas are A number (this number is called a central square number) that is expressed as a division number in the direction and Y-axis direction is attached, and the distance between the telephone office on the calling side and the telephone office on the called side is indicated by each station. Find it from the square number by trigonometry, identify the band code from this distance, and find the frequency required for a call per unit time, for example, per 3 minutes (hereinafter referred to as unit time frequency) corresponding to the identified band code. , the call charge is calculated based on this.

[Problems to be Solved by the Invention] When performing LCR automatic selection, especially when calculating the unit time frequency of a non-core route, it is necessary to determine the number of units of time for non-core routes. The unit time frequency between the 201 station (originating POI station) to which the telephone office is connected, and 2 to which the subscriber connection telephone station on the called party's side and the telephone office are connected.
It is necessary to calculate the unit time frequency between the 01 station (receiving PO2 station) and the unit time frequency between the originating POI station and the terminating POR station, and then add up these three unit time frequencies. In addition, this calculation must be performed for each core company.

Therefore, if the unit time frequency of the non-core route is calculated by the conventional calculation method using the station square number. This calculation must be performed three times for each non-core company (in the case of three non-core companies, a total of nine times), resulting in an extremely long processing time.

In order to solve the above-mentioned problems, the present invention provides a new method for calculating the unit time frequency of a call route that is set over lines of a plurality of telephone companies.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a band code between a subscriber connecting telephone station and the 201 station to which the telephone station is connected, and a band code between POI stations. The unit time frequency for each band code is stored in advance in the memory in a table format, and the band code and calling point between the subscriber connecting telephone station on the calling side and the calling side PO2 station connected to the telephone station are stored in advance in the memory in a table format. Bandwidth code between the subscriber connection telephone station on the called side identified by the number dialed by the caller and the nursing side POI station connected to the telephone station, and the band code between the calling side PO2 station and the called side POI station. The band codes in between are determined by referring to the memory, and the unit time frequencies for each of the band codes are determined by referring to the memory and added up.

[Operation] Since the calculation of the unit time frequency of non-core routes is performed by referring to information stored in advance in memory, the processing time is significantly reduced compared to the conventional calculation method based on square numbers. Ru.

[Example] Figures 1 to 4 all explain the present invention in detail. Figure 1 is a diagram showing the information stored in the MA (Massa, ge Area) table, and Figure 2 is a diagram showing the information stored in the MA (Massa, ge Area) table. FIG. 3 is a diagram showing information stored in a code table, FIG. 3 is a diagram showing information stored in a frequency table for each band code, and FIG. 4 is a block diagram of an example in which the present invention is implemented in a telephone exchange system.

1 to 4 show examples in which the present invention is implemented when automatic LCR selection is performed in a telephone exchange system.

As shown in FIG. 4, the telephone exchange system PBX is a normal system consisting of a communication path switch 1, a line circuit 2, an outside line trunk 3, a memory 4, a dial sender 5, a central processing unit 6, etc. 4 includes an MA table 41, an inter-POI band code table 42, and a band frequency table 43 shown in FIGS. 1 to 3.

As shown in FIG. 1, the MA table 41 is an area 41 corresponding to a telephone office where each local square number is assigned a corresponding square number.
1,412,413... are provided. At present, the whole country is divided into 567 areas, and the MA table 41 is divided into telephone stations numbered No. 1 (hereinafter, generally speaking, telephone stations numbered No. n are designated as No. area 4 corresponding to No. 567 square station)
There are 567 divisions up to 1 say.

Areas 41 to 41say of each square station further include an area 41a that stores the station square number of the square station concerned, and an area that stores the number of adjacent stations (surrounding telephone stations where charges are made regardless of the distance between telephone stations). 41b, an area 41c that stores the adjacent station number, an area 41d that stores the band code between the 201 stations to which the square station is connected, and 20 to which the square station is connected.
It consists of an area 41e that stores the number of one station.

Among these areas, areas 41a, 41b, and 41c are necessary for counting the number of calls during a call using the trunk route, and are also provided in the conventional MA table. Furthermore, in the case where there are multiple non-core companies, information for each company is stored in the areas 41d and 41e.

As shown in FIG. 2, the inter-POI band code table 42 has areas 421 and 42 corresponding to each of the 201 stations on the calling side.
□... is provided and configured. At the moment,
The number of stations 201 is 15, and the inter-POI band code table 42 has 15 stations from area 42 to area 42.5.
Separated.

Above area 42. 〜42.5 further includes each 201 on the called side.
It is divided into areas 42A1 to 42A+s corresponding to the stations (
This area is also divided into 15 sections. ), each area 428, to 42A+s has a band between corresponding POI stations (for example, area 42, area 42A2 has a band between POII stations and POI
The band code between the two stations is stored.

As shown in FIG. 3, the band code frequency table 43 is as follows:
Area 433 corresponding to the company regulations of core companies and non-core companies.
43□... are provided. In the embodiment, there are three non-core companies, and the band code frequency table 43 is area 43. It is divided into four areas from Area 434 to Area 434.

Each area 43, to 434 is further divided into a first time zone 43A, a second time zone 43B, and a third time zone 43G because call charges are divided into three time zones. The first time period is from 8:00 to 19:00 (daytime period), and the second time period is from 8:00 to 19:00 (daytime period).
The time zones are from 19:00 to 21:00 and from 6:00 to 8:00 (night time zone and early morning time zone), and the third time zone is from 21:00 to 6:00 the next morning (late night time zone).

Furthermore, each time zone area 43A, 43B, 43G is allocated to each band code as area 34Al, 43A2...
・、43B+.

It is divided into 43B2,..., 43(:+, 43C2...), and currently the band code is from "0" to "
15", the respective areas 43A, 43B, and 43G are divided into 16 sections (43A, ~43A+s, 43Bo~43B+s, and 43Co~43Cls), and each area 43A
O~43A+s, 43Bo~43B+s and 43CO~
43C+s is the unit time frequency (in the example, 3 minutes is the unit time.Hereinafter, the unit time is The frequency is sometimes referred to as the 3-minute frequency.

) are stored. Note that the call charge per degree may differ depending on the telephone company, but in this case, the 3-minute frequency stored in the frequency table 43 by band code indicates that the call charge per degree is the same for all telephone companies. A correction value is stored such that (In the following explanation, if the power has been corrected, the corrected power will be used.)

In FIG. 5, subscriber 5UBI is connected to telephone exchange system P
As an example, when calling subscriber 5OB2 from the extension telephone device of the BX, the above-mentioned telephone exchange system PBX
The LCR automatic selection processing operation will be explained below. This operational explanation will specifically clarify the call frequency calculation method according to the present invention.

In the telephone exchange system PBX, MA data (message area data) fixedly determined by the central square number of the subscriber connection telephone office in the installation area is stored in the N of the MA table 41.
o, one square station area 41. ~No, it is set in advance by specifying the corresponding area among the 567 square station areas 41,567.

When the telephone device performs an operation of calling the telephone device 2 (an operation of hooking off and dialing the telephone number of the subscriber 5UB2), in FIG. 4, the central processing unit 6 detects the above operation through the line circuit 2, The outside line trunk 3 is captured and the communication path switch 1 is driven, and the line circuit 2
and the outside line trunk 3, and performs the following automatic LCR selection process.

In the first stage of the LCR automatic selection process, the unit time frequency of each call route is calculated. That is, as shown in FIG. 5, the call route from the calling party 5UB2 to the called party 5UB2 includes a call route that goes through the backbone route LA and a call route that goes through the backbone route LB, LC, or LD. For each call route, the call availability is calculated using the following process.

First, regarding the call route via the backbone route LA, the line is owned only by the backbone company, so even if conventional calculation methods are used, only one calculation is required, and the central office of the subscriber's connecting telephone office There are 567 types of numbers, and for all combinations of two local square numbers, the non-core route L described later
B.

Presetting a table for the calculation method of the call route via LC or LD (calculation method of the present invention) requires a huge amount of memory and the work of inputting data into the memory, etc. Calculate the unit time frequency using the calculation method. In other words, the preset square number of the calling party's telephone station C10(A) and the called party 50112 dialed by the calling party SOB.
The called party's telephone station Cl0 (identified from the dial number of
Based on the central office square number of B), both telephone stations C10 (
Find the distance between A) and C10(B).1. The band code corresponding to this distance is determined, and the band code frequency table 43 is referred to, and the key company corresponding area 43 of the table 43 is determined. The 3-minute frequency of the band code determined above is determined from the first, second, or third time zone area 43A, 43B, or 43C corresponding to the transmission time.

Next, the unit time frequency is calculated sequentially for the call route via the non-core route) - LB, L(: or LD. In other words, for example, in calculating the call route via the non-core route LB, first, the MA table The calling side square station C10(A) is connected from the area 41d of the 410 calling side square station area (any of areas 41. to 41567, this area is fixedly set as described above). N011 Non-core company (Non-core route LB is N
o.1 It is assumed that the line is for a non-core company. ) is read, and the 3-minute frequency corresponding to the read band code is obtained from the core company corresponding area 431 of the band code frequency table 43 in the same manner as described above. This 3-minute frequency is for line LA3 owned by the core company. Next, the called side rectangular layer area of MA child table 1 (area 411
~41867, this area is identified by the number dialed by the caller. ) Find the 3-minute frequency for the core company's line LA8 from the area 41d in the same manner as above.

Next, from each area 41e of the calling side square layer area and called side square layer area of the MA child table 1, No.
l Originating PCII station C10 for non-core companies
and the number of the receiving side PO2 station C10 (F), and refer to the inter-POI band code table 42 to
Calling POI station c7 from the area corresponding to the OI station number
Read the band code between o (c) and the receiving side por station C10 (F), and further read the frequency table 43 by band code.
No. 1 Area corresponding to the band code read above in the first, second or third time zone area 43A, 43B or 43G corresponding to the transmission time in area 432 of non-core company (area 43Aa to 43A15, area 43 B 6
- 43B ls, 43Co - 43C+s) to calculate the frequency for 3 minutes. The frequency for these 3 minutes is N
o, 1 Concerning line LB owned by a non-core company.

Next, by adding up the 3-minute frequencies for the line LA3, LA6, and line LB obtained in the above process, the unit time frequency of the call route via the non-core route LB is calculated.

The above processing is performed for each of the call routes via the non-core route LC and LD (the call route via the line owned by the non-core company No. 2 or No. 3).

Since the unit time frequencies for all call routes between subscribers 5LIBI and 5IJB2 have been calculated in the above manner, the central processing unit 6 (Figure 4) compares the above four unit time frequencies with each other and calculates the unit time frequency. The dialing signal necessary to identify the call route with the minimum frequency and select the identified call route from the dial sender 5 (if the main route is selected, the dial number operated by the caller 5tlB remains the same) If a non-core route is selected, a signal in which an access code for the selected non-core route is added to the above-mentioned dialed number) is sent to the outside line LA via the outside line trunk 3. With the above control, the calling party SOB and the non-calling party 50
You can talk to B2.

The above is an example in which the present invention is implemented in a telephone exchange system, but the present invention can also be implemented in a so-called stand-alone telephone set that is directly connected to a telephone line network.

In particular, if the stand-alone telephone is a multi-function telephone that has functions other than telephone calls, it is equipped with its own central processing unit (MF'lJ), so it is capable of inputting the various data into memory and It can be implemented by simply inputting a time frequency calculation program.

[Effects] As described above in detail, the present invention stores in advance in a memory (table) band codes for call routes spanning lines of multiple telephone companies and unit time frequencies for the band codes. The unit time frequency of the call route is determined by referring to this memory, and since no arithmetic processing is required, the processing time can be significantly reduced.

[Brief explanation of the drawing]

Figures 1 to 4 all explain the present invention in detail. Figure 1 is a configuration diagram of the MA table, Figure 2 is a configuration diagram of the inter-POI band code table, and Figure 3 is a configuration diagram of the band code table. FIG. 4 is a block diagram of the telephone exchange system, and FIG. 5 is a diagram illustrating the telephone line network. 4...Memory 41...MA table 42...Inter-POI band code table 43...Frequency table by band code C10 (A), clo (B)...Subscriber connection telephone station c10 (c) , clo (old... line connection telephone office (POI station) Figure 1 Figure 2 Figure 3 Figure 4 Figure 4 b To N''W

Claims (1)

[Claims] This method calculates the number of calls required per unit time for a call route via lines of different telephone companies, and the method calculates the number of calls required per unit time for a call route that passes through lines of different telephone companies. Bandwidth codes between line-connecting telephone offices between different telephone companies to be combined, band codes between line-connecting telephone stations, and the number of calls required per unit time for each band code are shown in table format in advance. Store it in memory with
Bandwidth code between the subscriber-connecting central office on the calling subscriber's side and the calling-side line connecting central office connected to the central office; The band code between the subscriber connecting telephone station and the terminating line connecting telephone station connected to the telephone station and the band code between the line connecting telephone stations on the calling side and the terminating side are respectively determined by referring to the memory. and a call frequency calculation method in which the frequency required for a call per unit time in each of the band codes is determined by referring to the memory and summed.