JPH05276252A - Private branch automatic exchange - Google Patents

Abstract

PURPOSE:To provide the private branch automatic exchange which can select an optimum carrier in cosideration of the charge difference due to the difference of the speaking time by taking the average speaking time of an extension into consideration of the selecting logic as the LCR function which selects the least expensive carrier at the time of originating a call to a trunk line. CONSTITUTION:Average speaking time data 38 at the time of originating a call to a trunk line is always counted by an average speaking time monitor part 33, and the average speaking time of the extension is taken into consideration of the time, when the charge is different by the speaking time in accordance with each direction, with respect to the LCR selecting logic '(toll number)+(the day of a week)+(time zone)'. Thus, the carrier whose charge for speaking is the lowest is selected by a carrier selecting part 32.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an LCR (Leas) for selecting a carrier with the lowest call charge when transmitting a local line.
The present invention relates to a private automatic branch exchange having a t Cost Routing function.

[0002]

2. Description of the Related Art In recent years, as the number of telephone carriers has increased rapidly, the difference in call charges between carriers has widened, and the PBX and the key telephone device which can access a plurality of carriers have been expanded.
The CR function is an essential function.

A conventional private automatic branch exchange having an LCR function will be described below with reference to the drawings.

As shown in FIG. 4, a conventional private branch exchange 1
Is input to the first extension 2 and the nth extension 3, and the extension circuit unit 4 for interfacing with each extension 4, the communication path switch unit 5, and the station line circuit 6 for interfacing with each station line
And transmits from the first station line 7 and the mth station line 8. Further, the signal 9 is input to the main controller 10 from an external input / output device that sets data for carrier selection. The control unit 11 that performs various circuit switching, the carrier selection unit 12 that selects the carrier with the lowest call charge, the dial analysis unit 13, the input / output unit 14 that interfaces with external input / output devices, and the main storage device 15 It is composed of included carrier selection data 16.

With respect to the private automatic branch exchange comprising the above components, the relationship and operation of each component will be described below.
First, for the data setting for carrier selection, the signal 9 is input from an external input / output device and the control unit 11 is input through the input / output unit 14.
And carrier selection data 16 in the main memory 15
Is set to. Next, the carrier selection at the time of station line transmission is dialed from, for example, the nth extension 3, passed through the extension circuit section 4, recognized by the control section 11, analyzed by the dial analysis section 13 as station line transmission, and then selected by the carrier selection section. At 12, the carrier with the lowest call charge is selected by the carrier selection data 16, and the station line circuit unit 6 transmits from the mth station line 8.

Carrier selection data 16 as shown in FIG.
The details of the are configured by a station number table 17, a day of the week table 18, a time zone table 19, and a carrier registration table 20. The station number table 17 is indexed by the station number dialed from the extension, the day table 18 is indexed by the current day of the week, the time zone table 19 is indexed by the current time zone, and the carrier registration table 20 is indexed. Is sought. Since carrier carriers are registered in the carrier registration table 20 in ascending order of call charges, the carrier carriers are selected in that order.

[0007]

However, in the above-mentioned conventional configuration, it is not possible to know whether the charge is originally cheap or expensive until the call is terminated. In such a conventional LCR function, the call is made depending on the call time. There was a problem that only one carrier can be selected even when the price is low / high, but is reversed.

The present invention solves the above-mentioned problems of the prior art. The LCR function makes it possible to select the carrier with the lowest call charge by considering the average call time of the outgoing extension when selecting the carrier. It is an object of the present invention to provide a private branch exchange having the following.

[0009]

In order to achieve the above-mentioned object, the private automatic branch exchange of the present invention constantly counts the call time at the time of originating a station line for each extension and calculates the average call time each time. It has a configuration provided with a call time monitoring unit and a carrier selection unit that selects the carrier with the lowest call charge among the station number data, the day of the week data, the time zone data, and the average call time at the time of calling the station line.

[0010]

According to the present invention, in the above-mentioned structure, the carrier with the lowest call charge is selected and sent according to the station number, the day of the week, the time zone, and the average call time at the time of calling the station line.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, in the private automatic branch exchange 21 of this embodiment, an extension circuit section 24 for inputting a first extension 22 and an nth extension 23 and for interfacing with each extension,
It has a communication path switch unit 25 and a station line circuit unit 26 for interfacing with each station line, and transmits from a first station line 27 and an mth station line 28. In addition, a signal 29 is input to the main controller 30 from an external input / output device that sets data for carrier selection. Control unit 3 that performs various circuit switching
1, a carrier selection unit 32 that selects the carrier with the lowest call charge, an average call time monitoring unit 33 that monitors the average call time at the time of station line transmission for each extension, and a dial analysis unit 3
4, an input / output unit 35 for interfacing with an external input / output device, carrier selection data 37 included in the main storage device 36, average call duration data 38, and the like.

Regarding the private automatic branch exchange comprising the above components, the relationship and operation of each component will be described below with reference to FIGS. 1, 2 and 3. First, for the data setting for carrier selection, a signal 29 is input from an external input / output device,
It is recognized by the control unit 31 through the input / output unit 35 and set in the carrier selection data 37 of the main storage device 36. Also,
Average call time monitoring unit 3
3, the average call time data 38 is set.

Next, for carrier selection at the time of originating a station line, for example, the nth extension 23 is dialed and the extension circuit section 24 is used.
Through the control unit 31, the dial analysis unit 34 analyzes the transmission as a local line, and the carrier selection unit 32 selects the carrier with the lowest call charge based on the carrier selection data 37 and the average call time data 38. By the circuit unit 26,
Send from the mth station line 28.

Carrier selection data 37, as shown in FIG.
The details of the above are composed of a station number table 39, a day of the week table 40, a time zone table 41, an average call time table 42, and a carrier registration table 43. The station number table 39 is indexed by the station number dialed from the extension, then the day of the week table 40 is indexed by the current day of the week, and then the time zone table 41 by the current time zone.
And the average call time table 42 is indexed from the average call time of the outgoing extension, the carrier registration table 43 can be obtained. Carrier registration table 4
In 3, the calling carriers are registered in ascending order of call charges, and the calling carriers are selected in that order.

As shown in FIG. 3, regarding the call time and the call charge between two carriers, the vertical axis represents the call charge and the horizontal axis represents the call time. It is cheaper to oscillate on the carrier 1 until the call time T. It means that it is cheaper to make a call in carrier 2 for time T or more. According to the present invention, if the average call time is less than T, the carrier 1 is selected, and if it is T or more, the carrier 2 is selected.

[0017]

As is apparent from the above embodiments, according to the present invention, LCR selection logic (station number + day of the week + time zone)
In addition, by adding the average call time, it is possible to realize an excellent private automatic branch exchange that can select a cheaper carrier even when the call charge is high or cheap but reverses depending on the call time.

[Brief description of drawings]

FIG. 1 is a block diagram of an automatic private branch exchange according to an embodiment of the present invention.

FIG. 2 is a management table diagram of carrier selection in the embodiment.

[Figure 3] Call time and call charge correspondence diagram

FIG. 4 is a block diagram of a conventional private branch exchange.

FIG. 5 is a conventional management table of carrier selection data.

[Explanation of symbols]

 21 Private Branch Exchange 30 Main Control Unit 31 Control Unit 32 Carrier Selection Unit 33 Average Call Time Monitoring Unit 34 Input / Output Unit 35 Dial Analysis Unit 36 Main Storage Device 37 Carrier Selection Data 38 Average Call Time Data

Claims (2)

[Claims] 1. A main storage unit, a main control unit, an external input / output device, and a station line that can access a plurality of carriers input from a telephone of an extension, and a call time when the station line is transmitted for each extension. The average call time monitoring unit that constantly counts and calculates the average call time each time, and selects the carrier with the lowest call charge based on the station number data, day of the week data, time zone data, and average call time when calling the station line. An automatic private branch exchange equipped with a carrier selection unit. 2. The private automatic branch exchange according to claim 1, wherein the average call time data and the carrier selection data are provided in the main storage device.