JP3318438B2 - Switching system routing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for determining a route of an exchange.

[0002]

2. Description of the Related Art Built-in LCR (Low Cost Rout)
A private branch exchange (PBX) having a "tine" function is known. Here, the LCR function is a function for automatically selecting the line of the carrier (communication company) with the lowest charge and calling. At present, as a carrier called a carrier, in Japan, NTT (Nippon Telegraph and Telephone Company), JT
(Japan Telecom), DDI (Second Telegraph) and TWJ (Japan High Speed Communication). Of these, new entrants other than NTT, JT (Japan Telecom), DDI (second electric power) and T
WJ (Japan High Speed Telecommunications) is put together and NCC (New C
Ommon Carrier). In order to use the NCC line, it is necessary to have previously subscribed to these NCCs.
It is necessary to enter a special number for designating C. These special numbers are as follows.

[0003] In other words, after these special numbers are entered, the telephone number of the original destination is entered after JT 0088 DDI 0077 TWJ 0070.

FIG. 6 is a conceptual diagram of a conventional system. In the figure, 1 is a private branch exchange (PBX), 2 is a memory connected to the private branch exchange 1, and 2a is a service area data section in which service data relating to LCR is stored.
Reference numeral 3 denotes a plurality of extension terminals connected to the PBX. Reference numeral 4 denotes a switching center of the public network (hereinafter simply referred to as a "station"). Reference numeral 5 denotes a network connected to the station 4. Reference numeral 6 denotes a plurality of subscriber terminals connected to the network 5.

[0005] Reference numeral 10 denotes an NCC network connected to the station 4. Although the figure shows a network of one carrier, networks of all NCC carriers are actually connected.

It is assumed that a call is made from the extension terminal 3 to a specific subscriber terminal 6 in the system configured as described above. P
The BX refers to the service area data section 2a to determine a route with the lowest charge and establishes a communication path (for example, a path indicated by a thick arrow in the figure).

[0007]

The above-mentioned conventional LCR
In the switching system with functions, when the built-in LCR function is used, in the conventional switching system, the service area data section 2a is used.
When the data has changed (for example, when the service area is expanded), the data has been rewritten online on the day of the switchover. For this reason, it takes a very long time to rewrite the data of a large number of exchanges, and there has been a problem that the data cannot be changed in time for the new service start of the NCC carrier. In addition, since the data is changed online, if the LCR is transmitted from the extension during the change, the original LCR function may not be fully utilized.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a route determination system for an exchange which enables real-time response without delaying a new service start time of a carrier. And

[0009]

FIG. 1 is a block diagram showing the principle of the present invention. 6 are denoted by the same reference numerals. The system shown in FIG. 1 includes a private branch exchange 1 to which an extension terminal 3 is connected, a central control unit 40 connected to the private branch exchange 1, and a main unit memory 30 connected to the central control unit 40. An exchange system having functions is configured.

In the figure, 1 is a private branch exchange (PBX),
3 is a plurality of extension terminals connected to the private branch exchange 1, 20
Is a maintenance console connected to the private branch exchange 1 for registering new data. Reference numeral 30 denotes a main memory for storing various service area data, and reference numeral 40 denotes a central controller for controlling the PBX and realizing an LCR function according to the contents of the main memory 30. Reference numeral 7 denotes a public line connected to the PBX.

In the main memory 30, reference numeral 31 denotes a switching date / time data table for storing switching date / time information, 32 denotes an area data table for storing a route determining code corresponding to an area code, 33 denotes a route determining code, and a time zone. A route determination table for storing flags and carrier designation codes, and a carrier selection priority table 34 for storing priorities corresponding to carrier designation codes.

[0012]

The area data table 32, the route determination table 33, and the carrier selection priority table 34 have data of two surfaces: an operation data surface (active system) and a switching data surface (standby system). Then, the central control device 40
The switching date and time data table 31 of the main body memory 30 is constantly monitored, and when the switching date and time is reached, the area data table 31, the route determination table 32, and the carrier selection priority order table 34 are switched from the previous operation data surface to the switching data surface. Switch all at once. Specifically, the service data (LCR data) stored on the switching data surface is written on the operation data surface. This enables real-time response without delaying the new service start time of the carrier.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 2 is a diagram showing an example of a registration procedure of various necessary data. The system shown in FIG. 1 is used as the system. First, when the LCR data registration is started from the maintenance console 20, the LCR data is sent to the central controller 40.
A data registration notification is made (S1). In response, the central control unit 40 returns a change information reception preparation completion notification (S
2). As a result, the maintenance console 20 and the central control device 40 are connected, and are brought online. The maintenance console 20 notifies the central control device 40 of an operation / switch data flag indicating which surface of the active system and the standby system is to register data (S3). “0” indicates registration in the operation data plane, and “1” indicates registration in the switching data plane.

In the case of registration on the operation data side, the maintenance console 20 accesses a route determination table or the like in operation. Therefore, the route determination data information (LCR data) is sent from the maintenance console 20 to the central control device 40.
Is transmitted (S4). The central control unit 40 directly rewrites the operation-side route determination table and the like in the main body memory 30 (S5).

On the other hand, in the case of registration in the switching data plane, the maintenance console 20 accesses a switching route determination table and the like. Therefore, the route determination data information (L
CR data) (S6). Central control unit 40
Leaves the operating route determination table and the like as it is, and registers data in the switching route determination table and the like (S7).

On the other hand, when the automatic switching date and time is registered, the switching date and time information is transmitted from the maintenance console 20 to the central control unit 40 (S8). The central controller 40 registers the automatic switching date and time information in the switching date and time data table 31 (S9).

In the above description, various types of data are registered in the main body memory 30 from the maintenance console 20. However, these data can be registered from the extension terminal 3 using a special number. For example, when registering LCR data, a special number is input from the extension terminal 3 to notify the central control device 40 that the service data is to be registered, and then the operation / switch data flag is notified to the central control device 40,
After the registration plane is determined, the LCR data is transmitted using a numeric keypad or the like. As a result, the LCR data is registered in the various data tables in the main body memory 30.

FIG. 3 is a diagram showing a procedure for switching planes in the route determination table. Switching between the active system surface and the standby system surface can be performed manually or automatically. (Manual switching) First, a case of switching a plane using the extension telephone 3 as an extension terminal will be described. in this case,
When the operator picks up the receiver (off-hook), the call information is notified to the central controller 40 (S1). Upon receiving the call information, central controller 40 returns a dial tone (DT) to the telephone (S2). When the receiver listens to the DT, the operator sends a switching special number dial to the central controller 40 (S3). At this time, an arbitrary number of 1 to 4 digits can be used as the number of digits of the special number dial. Next, the operator sends the surface designation code to the central controller 40 (S4). Surface designation code is "0"
Is the operation data surface, and “1” is the switching data surface. The central controller 40 notifies the designated code to the main memory 30 (S5), and switches the designated surface of the main memory 30 to the operation data surface.

Next, a case where the surface is switched from the maintenance console 20 will be described. In this case, when the maintenance console 20 is activated, the maintenance console 20 notifies the central control device 40 of the activation (S6). Upon receiving the activation notification, the central control device 40 returns a change information reception preparation completion notification to the maintenance console 20 (S7). As a result, the maintenance console 20 and the central control device 40 enter the online mode. Next, the maintenance console 20 sends the surface designation code to the central control device 40 (S8).
The central controller 40 stores the designation code in the main memory 30.
(S9), and switches the designated surface of the main memory 30 to the operation data surface.

(Automatic switching) Now, it is assumed that the maintenance console 20 or the extension telephone 3 and the main body memory 30 continue the line switching processing (S10). Here, the central control device 40 always refers to the switching date and time data table 31 of the main body memory 30. Then, when the face switching execution date and time comes, the face designation code is automatically sent to the main body memory 30 (S11). The main body memory 30 switches the designated surface to the operation data surface. In this way, it is possible to switch the surface designated by the manual instruction from the maintenance console 20 or the extension telephone 3 or by the automatic switching instruction using the switching date and time data table 31 to the operation data surface. In other words, the switching data surface that has been the standby system becomes the operation data surface. Specifically, the switching data is written on the operation side. If the surface designation code is "0", the data surface remains as it is.

FIG. 4 is a diagram showing an example of the configuration of the main body memory 30. In the figure, reference numeral 31 denotes a switching date and time data table in which automatic switching date and time information is stored. Reference numeral 32 denotes an area data table which stores an area code and a route determination code, and includes an active system 32a and a standby system 32b. The route determination code indicates the cheapest route by a code. For example, 256 routes from 0 to 255 are stored. The carrier with the lowest price is determined by the route determination code. The area code, for example, 112000 includes area codes from 100001 to 122999. The route determination code in this range is “1”.

A route determination table 33 stores a route determination code, a time zone flag, and a carrier designation code, and is composed of an active system 33a and a standby system 33b. As for the time zone flag, “1” indicates day, “2” indicates night,
“3” indicates midnight, respectively. For example, when the route determination code is “1” and the time zone is night, the carrier designation code to be selected is “1”.

Reference numeral 34 denotes a carrier selection priority table storing carrier designation codes, priorities, and carrier names, which comprises an active system 34a and a standby system 34b. The priority indicates the priority between carriers when the charges are the same. For example, if the carrier designation code is "1", and the charges are the same, the priority order is DDI, JT, TWJ, and NTT.

With reference to the LCR data having such a configuration, the central control unit 40 determines the route with the lowest fee. The sequence of the determination is as follows. First, a route determination code corresponding to the input area code is determined with reference to the operation system in the area data table 32. When the route determination code is determined, the active system in the route determination table 33 is referred to, and the carrier designation code based on the time zone of the corresponding route determination code is determined from the time zone when the call is made. When the carrier designation code is determined, the corresponding carrier is selected by referring to the carrier selection priority table 34. If there are a plurality of carriers having the same fee, the carriers are selected according to the priority.

FIG. 5 is a flowchart showing an example of the processing procedure of the present invention. The system shown in FIG. 1 is used as the system. When data input is started, the operator creates route determination table data and the like offline using the maintenance console 20 (S1). After creating the route determination table data and the like, the operator connects the maintenance console 20 to the PBX and inputs data (S2). The central controller 40 checks whether the data input is before the area data switching date and time (S3). If the data input is on the day of the area data switching date and time, the central controller 40 sets the operation / switching data flag to “0” and accesses the main body memory 30,
The operation data plane is selected and data is loaded (S4), and the route determination table and the like of the data plane in operation are directly rewritten (S5; see step S5 in FIG. 2). After that, various necessary data is registered in each table in the main body memory 30 (S
6). Thus, the LCR operation is started (S7).

If the area data input is before the area data switching date and time, the central control unit 40 sets the operation / switching data flag to "1", accesses the main body memory 30, selects the switching data surface, and stores the data. Load (S
8) Next, the automatic switching date and time is set to the switching date and time data table 3.
1 (S9). Thereafter, various necessary data is registered in each table in the main body memory 30 (S10).

Next, the central control unit 40 checks whether or not automatic plane switching has been performed (S11). If automatic plane switching has been performed, the central controller 40 constantly monitors the switching date and time data table 31 (S12). Then, when the switching date and time comes, the switching data is written to the operation data surface, and the system is switched (S13). Thus, the LCR operation is started (S14).

If it is determined in step S11 that automatic switching has not been performed, it is checked whether switching has been designated by the extension terminal (telephone) 3 (S15). When the switching is not performed from the extension terminal 3, the maintenance console 20 is brought online because the switching is performed from the maintenance console 20 (S16). If the switching is from the extension terminal 3, the operator raises the receiver (goes off-hook) (S17) and dials the special number (S18).

Next, in either the case of the maintenance console 20 or the case of the extension terminal 3 from the surface switching designation, the surface designation code ("1" or "0") is dialed (S19). If the surface designation code is "0", the operation data is stored as it is (S20). This allows
LCR operation is started (S21). If the plane designation code is "1", the central control unit 40 writes the switching data on the operation data plane (S22). As a result, the service area data surface is switched, and LCR operation is started (S23).

In the above-described embodiment, a case where a domestic carrier is used as a carrier is taken as an example. However, the present invention is not limited to this, and can be similarly applied to a case where an international carrier is used. International carriers include, for example, KDD (special number 001) and IDC (special number 0).
061), ITJ (special number 0041) and the like. When making an international call, after inputting (one digit of country code) and three digits of area code, the other party's telephone number is input.

[0031]

As described above in detail, according to the present invention, the service area data in the main body memory 30 is prepared for the active system and the standby system, and when the switching date and time comes, the service area data is automatically set. By writing the data of the standby system up to that time to the data surface of the active system, it is possible to provide a switching system route determination system capable of real-time response without delaying the new service start time of the carrier,
Great practical effect.

[Brief description of the drawings]

FIG. 1 is a principle block diagram of the present invention.

FIG. 2 is a diagram showing an example of a registration procedure of various necessary data.

FIG. 3 is a diagram illustrating a procedure for switching surfaces of a route determination table.

FIG. 4 is a diagram illustrating a configuration example of a main body memory;

FIG. 5 is a flowchart illustrating an example of a processing procedure according to the present invention.

FIG. 6 is a conceptual diagram of a conventional system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Private branch exchange 3 Extension terminal 7 Public network 20 Maintenance console 30 Main memory 31 Switching date and time data table 32 Area data table 33 Route determination table 34 Carrier selection priority table

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 3/42-3/58 H04M 15/00-15/38 H04Q 3/54-3/62

Claims (5)

(57) [Claims] 1. A and private branch exchange extension end end is connected, a central control equipment connected to the above constituting the switch, the central control instrumentation
Is composed of a main body memory connected to the location, in exchange system comprising a LCR function, the body memo Li, a switching time data table that stores switching time information, it corresponds with the area code path and area data table which stores the determined code, the route determining code,
Comprising a route determination table for storing the time zone flag and carrier designation code, and a carrier selection priority table storing priority corresponding to carrier designation code, further wherein area data table, the route determining table Passing
And carrier selection priority table, respectively.
And a switching data plane . 2. The system according to claim 1, wherein the switching date and time data table is
Enter a special number from the nonce console or from an extension terminal
Configuration so that switching date and time data can be registered more
2. The system according to claim 1, wherein the route is determined. 3. The area data table and the route determination table.
Cable and carrier selection priority table
Enter a special number from the service console or from an extension terminal.
2. The system according to claim 1 , wherein the data can be rewritten . 4. The switching device according to claim 1, wherein the central control unit includes a switching date and time data table.
When the date and time stored in the
Data table, route determination table and carrier selection priority
Switching the ranking table from the previous operation data
Route determination system according to claim 1, characterized in that simultaneously to switch as the other surface. 5. The maintenance control device according to claim 1, wherein
Finger by instruction from sole or special number input from extension terminal
The view, the area data table, the route determining table
Route determination system of claim 1, wherein the Le及 beauty carrier selection priority table is characterized in that to switch simultaneously on the data side switching from the operational data surface until then.