JPH06105990B2 - Line termination device and power supply monitoring device for terminal device - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention monitors a power supply state from a commercial power source to a line terminal device such as a home device or a line termination device connected to an optical subscriber line of a switching device. The present invention relates to a power supply monitoring device for a subscriber line terminal device.

[Technical Background of the Invention and Problems Thereof] In a telephone exchange, a line terminal device such as an in-home device or a line terminating device of an optical subscriber system installed and connected to a subscriber's home through an optical subscriber line is connected to a commercial power source. Although power is being supplied, conventionally, such a power supply state from the commercial power source to the line terminal device has not been monitored by the switching device, and the power supply control from the commercial power source to each line terminal device, that is, whether to supply power or not. This control is performed by the operation of the subscriber.
Therefore, even if the subscriber stops the power supply from the commercial power supply to the line terminal device for his own convenience, the switching device side cannot know the power supply stop state at all. Even if the line terminal device receives an incoming call from another subscriber, the switching device performs connection control for connecting the incoming call to the line terminal device of the subscriber without knowing the power supply stop state. However, since the power supply to the line terminal device is stopped, it is not possible to form a speech path to the line terminal device of the subscriber, and the switching device simply stops the power supply to the line terminal device by the subscriber. In spite of the above, the message was processed as an abnormality of the subscriber's line and a message "Tadaimatsushindekimasen" indicating the equipment failure was transmitted to the calling side.

As a result, in the conventional device, it is impossible to distinguish whether the calling side is due to a defect in the receiving side subscriber's equipment or the power supply stop of the commercial power source, and the serviceability and maintainability are impaired. It was

[Object of the Invention] The present invention has been made in view of the above, and an object thereof is that the inability to connect to the line terminal device of the optical subscriber system is caused by the stop of power supply to the line terminal device. It is an object of the present invention to provide a power supply monitoring device for a subscriber line terminal device in which serviceability and maintainability are improved by allowing the calling side to clearly identify whether it is due to a defect in the subscriber system equipment or not. .

[Summary of the Invention] In order to achieve the above object, the present invention provides a power supply state detecting means for supplying power to a line terminating device connected to an optical subscriber line of a switching device and a terminal device connected thereto. When there is an incoming call to this terminal device, the identifying means identifies the power feeding state to the line terminating device and the terminal device based on the detection signal from the power feeding state detecting means, and the line is detected based on the discrimination result by this identifying means. The gist is that when the power supply to the terminating device or the terminal device is in the power supply stopped state, the control means transmits a message indicating that the power supply is stopped to the calling side.

Embodiments of the Invention Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a power supply monitoring device of a subscriber line terminal device according to an embodiment of the present invention. In the figure, a home device 1 as a terminal device is connected to a switching device 9 via a line terminating device 3, an optical subscriber line 5, and a subscriber line terminal device 7. In the figure, for the sake of explanation, from the home device 1 connected to the left side of the switching device 9 to the subscriber line terminal device 7 is the receiving side, and from the home device 1 connected to the right side of the switching device 9 to the subscriber line terminal station. It is assumed that the devices up to the device 7 are the calling side, and that the home device 1 on the calling side calls the home device 1 on the receiving side in the operation described later.

The in-home equipment 1 and the line terminating device 3 correspond to the line terminal device of the present invention, and each of them has a power supply unit 11 composed of a commercial power supply for operation. Line terminator 3
Further has a line terminating unit 13 and a power supply state monitoring unit 15. The power supply state monitoring unit 15 as the power supply state detecting means monitors the power supply state from each power supply unit 11 to the home appliance 1 and the line terminating unit 13 and supplies a power supply start signal and a power supply stop signal transmitted from each power supply unit 11. And supplies the power supply start and stop signals to the switching device 9 via the optical subscriber line 5 and the subscriber line terminal equipment 7. The exchange device 9 has a switch unit 16 for connecting the respective home appliances 1, a power supply state storage device 17 as a power supply state storage unit, and a signal control unit 19 functioning as an identification unit, a control unit, and a read identification unit. ing. The power supply state storage device 17 corresponds to each home device 1 the power supply state to each home device 1, that is, the power supply state information or the power supply stop information, based on the power supply start and stop signals supplied from the power supply state monitoring unit 15. When a call is received from the home device 1 on the calling side to the home device 1 on the receiving side, the signal control unit 19 stores the data from the storage position of the power supply state storage device 17 corresponding to the home device 1 in the home. When the power supply state information or the power supply stop information for the device 1 is read, and when the read information is the power supply stop information, a message indicating that the power supply is stopped for the home device 1 on the sending side is sent to the switch unit 16, the subscriber line. When information is transmitted or read through the terminal device 7, the optical subscriber line 5, and the line terminating device 3 and the information is power supply state information, a normal subscriber line signal message is sent to the home device 1 on the calling side. The control for transmitting the message is performed.

As described above, the power supply monitoring device of the subscriber line terminal device according to the embodiment of the present invention is configured. Next, the operation will be described.

Whether or not the power is supplied from each power supply unit 11 to the home device 1 and the line terminating device 3 is determined by the operation of each subscriber, but each power supply performed by the operation of each subscriber. The power supply state or the power supply stop state from the unit 11 to the home device 1 and the line terminating device 3 is constantly monitored by the power supply state monitoring unit 15, and the power supply state of the monitoring result, that is, the power supply state information or the power supply stop information is the power supply state monitoring unit. From 15 to the optical subscriber line 5 and the subscriber line terminal device 7, the data is stored in the power supply state storage device 17 of the switching device 9, and the power supply state storage device 17 always stores all the home appliances 1 and the line termination devices 3. The latest power supply state is stored for each home device.

In such a state, if there is an incoming call from the home device 1 on the calling side to the home device 1 on the called side, the signal control unit 19 of the exchange device 9 supplies the power supply state corresponding to the home device 1 receiving the call. The storage position of the storage device 17 is accessed to read the information on the power supply state for the home device 1. As a result,
When the power supply stop information is read, the power supply to the in-home device 1 that is about to receive an incoming call is stopped, and the in-home device 1 is stopped. Therefore, the signal control unit 19 of the exchange apparatus 9 indicates that the in-home device 1 is A message indicating that the power supply is stopped is sent to the calling-side home device 1 via the switch unit 16, the subscriber line terminal device 7, the optical subscriber line 5, and the line terminating device 3, and the home device that is about to receive the call 1 indicates that power supply is stopped. As a result, the originating side can clearly identify that the incoming side is simply not supplying power, not the defective subscriber-side equipment on the receiving side.

If the information read from the power supply state storage device 17 by the signal control unit 19 is the power supply state information indicating that the power supply state is being set, a normal subscriber line signal message is sent to the home device 1 on the calling side. At the same time as sending, the home device 1 on the calling side is connected to the home device 1 on the receiving side via the optical subscriber line 5, the switch section 16 of the switching device 9 and the like.

In addition, even though the signal control unit 19 can access the power feeding state storage device 17 and identify that power is normally supplied to the called-side home device 1, On the other hand, if the call path for the incoming call cannot be formed, it can be clearly identified that the subscriber-side equipment on the receiving side is defective. Message is sent out.

In the above embodiment, the power supply state monitoring unit 15 has a built-in float type battery with a commercial power source at the subscriber's house,
This enables constant operation. Further, the power feeding state storage device 17 is provided in the line terminating device 3, shares the battery with the power feeding state monitoring unit 15, and the power feeding state storage device 17 provided in the line terminating device 3 from the switching device 9 each time a call is connected. May be used to read the power supply status information. However, for example, when the power supply from the commercial power supply at the subscriber's house is stopped for a long time, the battery capacity becomes insufficient, or the switching device 9 accesses the power supply status storage device 17. Therefore, it is preferable to provide the power supply state storage device 17 in the switching device 9 because the activation time of the subscriber line terminal device 7 may be required and the hold time of the incomplete call may be lengthened.

[Effects of the Invention] As described above, according to the present invention, the power supply state to each line terminal device is monitored, and when an incoming call is made in the power supply stop state, the power supply to the originating side is stopped. Since a message to that effect is being sent, whether or not the inability to connect to the called subscriber is due to the stop of power supply to the line terminal equipment or the defective subscriber-side equipment on the called side Since it can be clearly identified, the serviceability to the calling side is improved, and in the case of equipment failure, this can be detected and repaired immediately, and the maintainability of the exchange can be significantly improved. .

[Brief description of drawings]

FIG. 1 is a block diagram of a power supply monitoring device of a subscriber line terminal device according to an embodiment of the present invention. 1 ... Home equipment, 3 ... Line terminating device 5 ... Optical subscriber line, 7 ... Subscriber line terminal device 9 ... Switching device, 11 ... Power supply unit 15 ... Power supply status monitoring unit, 16 ... … Switch section 17 …… Power supply status storage device, 19 …… Signal control section

Claims (2)

[Claims] 1. A power supply state detecting means for detecting a power supply state of a power supply to a line terminating device connected to an optical subscriber line of a switching device, a terminal device connected to the line terminating device, and an incoming call to the terminal device. At this time, an identifying means for identifying the power supply state to the line terminating device and the terminal device based on the detection signal from the power supply state detecting means, and a power source for supplying power to the line terminating device or the terminal device based on the identification result by the identifying means. And a control means for transmitting a message indicating that the power supply is stopped to the calling side when the power supply is stopped. 2. The power feeding state detecting means is provided for each of the line terminating device and the terminal device in the line terminating device, and the identifying means supplies power to each line terminating device and the terminal device detected by the power feeding state detecting means. When there is an incoming call in the power supply state storage means for storing the state and the terminal device, the power supply state for the line termination device and the terminal device is read from the power supply state storage means and the power supply state for the line termination device and the terminal device is identified. 2. The power supply monitoring device for a line terminating device and a terminal device according to claim 1, characterized in that the read identifying means is provided in the switching device body.