JPH0426267B2 - - Google Patents

Description

TECHNICAL FIELD The present invention relates to a long-duration call monitoring system, and more particularly to a long-duration call monitoring system in a telephone exchange including a three-party call trunk and a relay stand.

(Prior art) Conventionally, the results of monitoring the talk time of any connected call in this type of telephone exchange are output to a printer, etc.
A maintenance person or the like looks at the printed results and takes necessary measures. Therefore, there was a problem in that unless maintenance personnel took this action, long-term calls would remain unattended.

(Object of the Invention) The object of the present invention is to solve the above-mentioned problems by having the relay stand perform an interrupt connection when the talking time of any connected call exceeds a predetermined time.
To provide a long-term call monitoring system that allows a relay stand operator to monitor long-term calls.

(Structure of the Invention) According to the present invention, in a telephone exchange including a three-party call trunk and a relay board, the time from the start of a subscriber's call is registered and monitored, and when the time exceeds a predetermined time, the relay A long-duration call monitoring system is obtained, characterized in that the stand is equipped with a call time monitoring circuit for making an interrupt connection via the three-party call trunk.

(Example) Next, the present invention will be explained with reference to the drawings.

The figure is a block diagram showing an embodiment of the long-term call monitoring system of the present invention.

In the figure, the telephone exchange consists of a calling party 1, a called party 2, an attendant (ATT) 3, an inter-extension trunk (IOT) 5, and a three-party trunk (TCT).
a communication path switch (hereinafter referred to as SW) 4 accommodating 6;
General central control unit (CC) 7 and IOT5
A call time monitoring circuit (hereinafter referred to as CTL) 8 is equipped with a counter corresponding to the caller that registers the call time based on the called party response signal from the caller, and when the contents of the counter exceeds a predetermined time, it notifies the CC7 of this fact. The CC7 initializes the CTL8 and also controls the display of incoming calls to the ATT3.

Next, the operation of this embodiment will be explained.

For example, as caller 1 is commonly known as
The extension is interconnected with the called party 2 through the path SW4-IOT5-SW4, and when the called party 2 answers, the IOT5
detects the response and transmits it to CC7. CC7 is CTL
Since the counter corresponding to caller 1 of 8 is initialized and started, the counter starts registering the talk time of the extension interconnection call. In CTL8, when the registration time of the counter exceeds the predetermined time
Tell CC7 that. The CC7 instructs the SW4 to connect the calling party 1, the called party 2, and the ATT3 to the TCT6, and also displays an incoming call on the ATT3 (by sounding a buzzer or lighting an incoming call lamp). When the handler answers at ATT3, ATT3 can interrupt the call between calling party 1 and called party 2 via TCT6 and monitor the call status. If the call state is normal, the caller 1 and the called party 2 return to the original call state via the IOT 5 by the operator restoring the ATT3. Also, when the operator monitors, if there is an abnormal condition such as no call or line hold, the operator can forcibly disconnect the path set between the calling party 1 and the called party 2 by operating the ATT3. can do.

The above explanation was about extension interconnection calls, but
The long-term call monitoring operation for calls originating from and arriving at the central office line also follows this, so a detailed explanation will be omitted.

(Effects of the Invention) As is clear from the above explanation, according to the long-term call monitoring system of the present invention, long-term calls are automatically displayed on the relay stand and the operator can interrupt, so that appropriate measures can be taken. This has the effect of not losing the opportunity to do so.

[Brief explanation of drawings]

The figure is a block diagram showing an embodiment of the long-term call monitoring system of the present invention. In the figure, 1...Caller, 2...Called party, 3
...Attendant (ATT), 4...Talking switch (SW), 5...Inter-extension trunk (IOT), 6...
...Three-party call trunk (TCT), 7...Central control unit (CC), 8...Talking time monitoring circuit (CTL).

Claims (1)

[Claims] 1. In a telephone exchange that includes a three-party call trunk and a relay board, the time from the start of a subscriber's call is registered and monitored, and when the time exceeds a predetermined time, a call is sent to the relay board via the three-party call trunk. A long-term call monitoring method characterized by comprising a call time monitoring circuit that performs an interrupt connection.