JPH0779395B2 - Call charge management system for private branch exchanges - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to call charge management in a private branch exchange having a relay switching function.

(Prior Art) A conventional telephone exchange operates as a telephone exchange by detecting polarity reversal from the subscriber line and restoration of the extension telephone when an outgoing call is made from the extension telephone to the subscriber line. The connected call charge management unit calculates the call charge from the call time and the called party number, and stores the call charge in the call charge storage area for each extension telephone.

Further, when making a call from an extension telephone to a private line, the call charge management is not performed because it does not match the line charge system, and therefore the call charge management unit does not perform any operation.

Furthermore, when a call that comes through a leased line of another telephone exchange (a telephone exchange connected via a leased line) makes a call to or makes a call to the central office line by using the relay exchange function of the own telephone exchange. However, the dial information is stored and analyzed to operate the relay exchange function, but the call charge is not managed.

(Problems to be Solved by the Invention) In such a conventional management method, a call charge is calculated and managed for outgoing / calling from the extension telephone of the private branch exchange to the office line. When the relay exchange function was used, in which the telephone exchange was connected to the office line via a leased line, the charge management was not performed because only the relay exchange function was operating. Therefore, only the call charge management for each extension user is performed, and the error in the call charge of the central office line connected to the private branch exchange becomes large, and the user cannot grasp the correct call charge.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to eliminate the above-mentioned drawbacks and to provide a system capable of accurately managing call charges for a leased line when the relay exchange function is activated.

[Structure of Invention]

(Means for Solving Problems) The present invention relates to a storage unit having a setting data indicating whether or not a private line and a local line have a termination monitoring function, and another private telephone exchange via a private line. If the relay signal is transmitted to the station line by analyzing the received dial signal, a judgment means for judging from the setting data whether the dedicated line or the station line connected to the dedicated line has the end monitoring function; If either the line or the office line has a termination monitoring function, the connection means for connecting the leased line and the office line, and the talk time count for receiving the polarity reversal signal from the connected office line and starting the talk time counting Means, a means for monitoring the recovery status of the leased line or the office line, and when one of the leased line or the office line is restored, stop the call time count and calculate the call charge from the dial signal and the call time count corresponding to the leased line number. And this The storage unit stores the calculation result in a storage area corresponding to the dedicated line number.

(Operation) Since the present invention adopts such a configuration, the call charge corresponding to the leased line number is obtained by the dial signal received via the leased line and the call time count by monitoring the restoration state of the leased line or the office line. calculate.

(Embodiment) FIG. 1 is a block diagram of an embodiment of the present invention, in which 1 is a switching circuit, 2 is an extension telephone, 3 is an extension circuit, 4 is a subscriber circuit, and 41 is an office line (subscriber line). ), 5a ... 5m is a dedicated line circuit, 51
51m is a leased line circuit, 6 is a central control unit, 7 is a call charge management unit, and 8 is a storage unit. The storage unit 8 stores an area 81 for storing the call charge for each extension telephone, an area 82 for storing the call charge for each leased line, and an area for storing a special number used when the leased line is called from the extension telephone. It is composed of 83. Next, the operation will be described with reference to the operation explanatory diagrams of FIG. 2 to FIG.

FIG. 2 is for explaining the operation when making an outgoing call from the extension telephone to the office line 41. Central control unit (hereinafter abbreviated as CC) 6 for outgoing dial data from the extension telephone 2
Analyze and detect a polarity inversion signal from the central office line, and inform the call charge management unit 7 of the information. Restore the extension signal of the extension telephone to C.C6
When it is detected and transmitted to the call charge management unit 7, the call charge management unit 7 calculates the call charge from the call time and the destination number (for example, long distance call, local call, etc.) and calculates the call charge. Store in the area of extension telephone numbers that used.

FIG. 3 is for explaining the operation when an incoming call from the leased line 51a is made to an outgoing call (relay exchange) to the office line 41.

The control procedure of the call charge management method in this case will be described in detail below.

When C.C6 receives an incoming call from the leased line 51a, it sends a dial tone via the leased line 51a. Next, dedicated line 51a
After receiving the dial signal required for relay exchange obtained from C.C6, it stores it in the internal buffer memory at the same time and analyzes the dial signal to determine whether it is an incoming call to an extension line, a relay transmission connection to a station line, or another dedicated line. It is determined whether the relay connection is.

When it is determined that the relay transmission connection to the central office line is made, C.C6 does the dedicated line 51a that is connected and the central office line 41 that is connected have a call end monitoring function (that is, a station where polarity reversal etc. is made). Whether or not it is a line) from the data preset in the storage unit 8,
If the line-end monitoring function is not set for both lines, the line may be invalidly captured. To reject this connection, a tone for connection restriction is sent to the leased line and the relay function is stopped. In other words, if it is a line (dedicated line, office line) that has a call end monitoring function, the call end operation of the other party of the call appears in the line status. On the contrary, if the line does not have such a function, the other party cannot judge the end of call and cannot measure the call time. Therefore, the relay operation is prohibited. When C.C6 determines that one of the lines has the call termination monitoring function, it connects both lines and stores the dial signal. When C.C6 receives the polarity inversion signal from station line 41,
C.C6 starts talk time counting, and leased line 51a or local line 4
Monitor recovery status from 1.

When C.C6 receives the restoration signal, it stops the call charge counting and restores the other lines, and at the same time, the call charge management unit 7
The outgoing dial data, the call time data, and the leased line number are transmitted to. Then, the call charge management unit 7 calculates the call charge and stores the result in the storage area 82 corresponding to the leased line number.

With such a structure, when the incoming call from the leased line 51a is transmitted to the office line 41 by relay exchange, the leased line 51a
Since an accurate call charge can be calculated for each line a and stored in the storage unit 8, there is an effect that the call charge of the user can be accurately calculated for each telephone and leased line.

Since the outgoing charges can be managed for each line of the leased line, when multiple leased lines are accommodated in one leased line group (when the special number for using the leased line from the extension telephone is the same)
The usage status of the private line group can also be output as a group total.

When a plurality of leased lines are accommodated in a plurality of leased line groups, the use of the contents of the leased line use special number storage area can be used to perform aggregate output for each use special number, and the same effect as above can be obtained .

[Advantages of the Invention] As described above, regarding an office line call via a leased line, there is an advantage that an outgoing call charge for each leased line number can be appropriately calculated and managed from a dial signal and a call time count. .

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a private branch exchange, FIG. 2 is a schematic connection diagram when an outgoing call is made from an extension telephone to a station line, and FIG. 3 is a dedicated line to a station line. It is a schematic connection diagram at the time of an outgoing call. 1 ... Exchange circuit, 2 ... Extension telephone, 3 ... Extension circuit,
4 ... Subscriber circuit, 41 ... Subscriber line, 5a ... 5m ... Leased line circuit, 51a ... 51m ... Leased line line, 6 ... Central control unit, 7 ... Call charge management unit, 8 ... Storage unit, 81 ... extension telephone call charge storage area, 82 ... dedicated line call charge storage area, 83 ... dedicated line special number storage area.

Claims (1)

[Claims] 1. A storage unit having setting data indicating whether or not a termination line monitoring function is provided for a leased line and an office line, and a dial signal received from another private branch exchange via the leased line is analyzed. In the case of making a relay call to a station line, a determination unit that determines from the setting data whether the dedicated line or the station line connected to the dedicated line has a termination monitoring function, the dedicated line or the station line If any one of the above has a termination monitoring function, a connection means for connecting the dedicated line and the office line, and a call time count for receiving a polarity reversal signal from the station line after the connection and starting a call time count Means, means for monitoring the recovery status of the leased line or the office line, and when the one of the leased line or the office line is restored, stop the call time counting, the dial signal and the corresponding to the leased line number Call Was from call charges calculated during counting, the call charge management system in the private branch telephone exchange, characterized in that the calculation result; and a storage means for storing in the storage area corresponding to the dedicated line number.