JPH0783407B2 - Least cost route selection method - Google Patents

Description

The present invention relates to a least cost route selection system.

[Conventional technology]

Conventionally, when performing the last cost routing in the private branch exchange having the last cost routing function of selecting the route of the telecommunications carrier that has the lowest call charge by the connection route to the other party when making an out-of-city call from the extension, Even if there are two or more telecommunications carriers having the same minimum call charge connectable route to the destination telephone number, only a predetermined route of a particular telecommunications carrier is selected.

[Problems to be Solved by the Invention]

The above-mentioned conventional least cost route (hereinafter referred to as LCR) selection method uses a predetermined specific electricity even if there are two or more telecommunications carriers who have LCR with the same call charge for the other party's telephone number. Since only the route of the telecommunications carrier is selected, there is a disadvantage that the out-of-town call cannot be evenly distributed to the telecommunications carriers in order to equalize the call charges within a predetermined period among a plurality of contract telecommunications carriers. is there.

[Means for Solving the Problems]

The least-cost route selection method of the present invention accommodates a connection line with a plurality of telecommunications carriers and, when an out-of-city call is made from an extension line, a telecommunications carrier with the lowest call charge by the connection route to the other party. In a private branch exchange having a last cost routing function for selecting a connection route; a telecommunications carrier memory that stores the names of the plurality of telecommunications carriers that have connection routes with the lowest call charges for each toll number; A charge distribution memory that stores a cumulative call charge for each telecommunications carrier; a search for the telecommunications carrier memory when making an out-of-city call, and the call charge according to a connection route to a destination among the plurality of telecommunications carriers The telecommunications carrier with the lowest call charge is selected, and when there are a plurality of telecommunications carriers with the lowest call charge, the charge distribution memory is searched to retrieve the call charge. There among the telecommunications carriers as a minimum, the total call charge and a control means for selecting a telecommunications operators of connection route showing the minimum value; that configured with a.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a private branch exchange showing an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are diagrams showing an example of stored contents of a telecommunications carrier memory and a charge distribution memory in FIG. , FIG. 3 is a flow chart for explaining the operation in FIG.

In FIG. 1, a main switch 40 accommodates an extension terminal 10 via a line circuit 20 and an outside line via a station line trunk 30. The office line trunk 30 is connected to a sender 31 which sends dial information including the area code to an outside line.
The control device 50 is connected to the line circuit 20, the main switch 40, and the sender 31 to perform predetermined control, and to write and read various information to and from the storage device 60.

The control device 50 includes a call detection unit 51, a dial information reading unit 52, a connection control unit 53, a dial information transmission unit 54, a telecommunications carrier selection unit.
The storage device 60 is provided with a storage device 60, and the storage device 60 stores the name of the communication carrier with the lowest call charge for each area code
61, a charge distribution memory 62 that stores a cumulative call charge for each telecommunications carrier, and an additional dial information memory 63 that stores additional dial information sent to a route selected for each telecommunications carrier . This additional dial information is predetermined for each telecommunications carrier and is stored in the additional dial information memory 63. The contents of the telecommunications carrier memory 61 are stored in advance as shown in FIG. In Fig. 2 (a), five telecommunications carriers A, B,
C, D, E are shown, "0" can select the route with the lowest call charge (that is, has LCR), "1" cannot select the route that has the lowest call charge (that is, that has LCR). No). For example, for an outgoing call with the area code "03", it indicates that the routes of Company A and Company B are LCRs with the same charge.

Next, the operation of this embodiment will be described with reference to FIGS.

First, the call detection unit 51 detects a call from the extension terminal 10 via the line circuit 20 (operation procedure 1). Next, the dial information reading unit 52 reads the dial information of the extension terminal 10 (operation procedure 2), and determines whether the dial information is an out-of-town call (operation procedure 3). If the call originates outside the city, the telecommunications carrier selection unit 55
Selects the telecommunications carrier with the lowest call charge from the telecommunications carrier memory 61 (operation procedure 4). Since there may be multiple telecommunications carriers that can select the route with the lowest call charge when searching the telecommunications carrier memory 61, it is determined whether there are two or more telecommunications carriers selected (operation Step 5) If there are two or more companies (for example, Company A and Company B), search the charge distribution memory 62 and select the lowest call charge. Show the lowest total call charge of the telecommunications carriers. The telecommunications carrier (company B here) that is present is selected (operation procedure 6). Next, the telecommunications carrier selection unit 55 reads the additional dial information of the telecommunications carrier B selected from the additional dial information memory 63 (operation procedure 7), and the air trunk line trunk.
30 is selected (operation procedure 8), the dial information sending unit 54 sends the dial information together with the additional dial information to the sender 31 corresponding to the selected air line trunk 30 (operation procedure 9). The sender 31 sends the additional dial information and dial information to the outside line via the office line trunk 30. When the response from the outside line is detected (operation procedure 10), the connection control unit 53 connects the link of the main switch 40 connecting the line circuit 20 to the extension terminal 10 and the office line trunk 30 (operation procedure 11). When this call ends, the telecommunications carrier selection unit 55 adds the current call charge to the accumulated call charge "4030" of company B in the charge distribution memory 62.

〔The invention's effect〕

INDUSTRIAL APPLICABILITY As described above, the present invention accommodates a connection line with a plurality of telecommunications carriers and, when a call is made from the extension to the outside of the city, the connection route of the telecommunications carrier to which the call charge to the destination is the lowest In a private branch exchange having a last cost routing function for selecting a telecommunications carrier; a telecommunications carrier memory for storing a plurality of telecommunications carrier names having connection routes with the lowest call charges for each toll number; and for each telecommunications carrier A telecommunications business that stores the total call charges in a telephone and a telecommunications carrier memory that is searched during out-of-city calls to obtain the lowest call charges of the connection route to the other party from multiple telecommunications carriers If you select a person and there are multiple telecommunications carriers with the lowest call charges, the call distribution memory is searched and the accumulated call charges of the telecommunications carriers with the lowest call charges By providing the control means for selecting the connection route of the telecommunications carrier showing the minimum value, the telecommunications carrier can be equalized so that the accumulated call charges for all out-of-town calls for each telecommunications carrier can be equalized. This has the effect of distributing out-of-town outgoing calls more evenly than before.

[Brief description of drawings]

FIG. 1 is a block diagram of a private branch exchange showing an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are diagrams showing an example of stored contents of a telecommunications carrier memory and a charge distribution memory in FIG. , FIG. 3 is a flow chart for explaining the operation in FIG. 10 …… extension terminal, 20 …… line circuit, 30 …… station trunk, 31 …… sender, 40 …… main switch, 50 …… control unit, 51 …… call detection section, 52 …… dial information reading Part, 53
...... Connection control unit, 54 ...... Dial information sending unit, 55 ...... Telecommunications carrier selection unit, 60 ...... Storage device, 61 ...... Telecommunications carrier memory, 62 ...... Charge distribution memory, 63 ...... Addition Dial information memory.

Claims (1)

[Claims] 1. A connection route of a telecommunications carrier, which accommodates a connection line with a plurality of telecommunications carriers and makes a long-distance call from an extension, and which has the lowest call charge according to the connection route to the other party. In a private branch exchange having a least cost routing function; a telecommunications carrier memory that stores the plurality of telecommunications carrier names having connection routes with the lowest call charges for each toll number; and for each telecommunications carrier A charge distribution memory that stores the cumulative call charge; an electric charge that searches the telecommunications carrier memory when making an out-of-city call, and uses the connection route to the destination of the plurality of telecommunications carriers to minimize the call charge A telecommunications carrier that selects the telecommunications carrier and searches the charge distribution memory when there are a plurality of telecommunications carriers that have the lowest call charges, and that has the lowest call charges Among them, a control means for the total call charge is to select a telecommunications carrier connection routes showing the minimum value; lease preparative cost route selection method, characterized in that it comprises a.