JPH08191273A - Subscriber's optical line terminal equipment and its feeding method - Google Patents

Abstract

PURPOSE: To attain a high power supply backup function and low prices by reducing power consumption at the stand-by state of a subscriber's line terminal in an optical subscriber system connecting a subscriber to a communication equipment such as an exchange and a transmitter through optical fibers and capable of transmitting/ receiving an optical signal. CONSTITUTION: In the subscriber's optical terminal equipment 80, a backup battery 42 for the countermeasure against service interruption is built in a power supply block and a feeding route is divided into a normal feeding route A and a feeding route B to be used after detecting a call/terminating call. When a detection part 50 detects a terminating call signal to its own equipment which is received from a receiving part 22 and a detection part 35-3 detects a call, a feed switch 431 is turned on by a control signal to supply a current to the route B. Consequently power consumption in a stand-by state can sharply be reduced and the battery 42 can be functioned as a sufficiently effective back-up power supply at the time of service interruption though it is compact. An wavelength multiplex signal or a time-division multiplex signal can also be used as an optical signal to be transmitted between a communication equipment and the terminal equipment and the backup battery 42 can also be used as a backup power supply or a main power supply for the terminal equipment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a communication system for transmitting / receiving a signal to / from a subscriber by using an optical signal, and more particularly to a structure of an apparatus for terminating an optical signal and a power feeding method thereof.

[0002]

2. Description of the Related Art In a communication network, particularly a relay communication network composed of transmission lines and nodes for relaying signals, a high-speed wide-band communication network introducing optical transmission is being developed. On the other hand, in each home, in addition to conventional telephones that communicate only with voice, image input / output devices that obtain image information with personal computers, CATVs, etc. and communication devices compatible with various types of multimedia have been introduced to provide various types of communication. It is considered to use communication services. In order to meet the demand for communication services of such households (hereinafter, also referred to as subscribers), for example, the 8th edition of "B-ISDN Picture Book Reader" issued by Ohmsha in January 1993. Chapter (p175
~ P188) or as described in Chapter 3 Research and Development (p132-p141) of Nikkei New Media's separate volume "Scenario for Communication and Broadcasting" published by Nikkei BP in July 1994. By introducing FTTH (Fiber to the home), which provides subscribers with high-speed broadband communication services, by connecting optical fibers between communication persons and communication facilities such as telephone offices and transmitting and receiving optical signals. There is. As the configuration of the optical subscriber system for transmitting and receiving optical signals between the subscriber and the communication equipment such as the exchange and the transmission device, as described in the above-mentioned literature, (1) the current metallic cable is used. As in the case of a telephone, a single star system is used in which a subscriber and a communication facility are connected to each other by an optical fiber in a one-to-one manner, and (2) Japanese Patent Publication No. 01-502470 discloses details. As described above, a passive optical star coupler is provided between the optical transmission lines of a plurality of subscribers and communication equipment,
By branching or merging the signals multiplexed for each subscriber in the communication equipment with each optical star coupler,
A passive double star system in which optical communication is performed between each subscriber and communication equipment is known as a typical configuration. Depending on the characteristics of each, a configuration that is advantageous for the application site other than the above two systems is available. We are trying to select and introduce from each method including the method.

In a conventional communication system that mainly uses telephone services and uses a metallic cable between a subscriber and communication equipment, the communication equipment commonly installed on the telephone station side joins via the metallic cable. A common power supply method (for example, DC) that provides subscribers with the power required to operate the terminal.
A voltage of -48V) was used. However, if the optical subscriber system configuration as described above is adopted, it is difficult to supply power to the optical cable unlike the metallic cable. Therefore, each subscriber supplies the power required for the operation of the subscriber terminal to a general commercial power source ( For example, it becomes necessary to receive optical power from AC100V) and perform optical communication with communication equipment. Therefore, the optical signal terminating device on the subscriber side is basically designed to operate with a general commercial power supply, and also provides the minimum required communication (for example, voice communication) even when the commercial power supply is interrupted. A backup power source such as a battery or a charger is provided so that it can be used for a certain period of time.

[0004]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Assuming various communication services that would be provided to general subscribers in the case of the introduction of the above, when commercial power provided to each home fails, for example, CA
There are many communication services that allow you to give up the usage, such as image provision services such as enjoying movies on TV, but as mentioned earlier, you can use the emergency contact in the event of a disaster or the complaint inquiry in the event of a power outage. The conventional telephone service is mainly used for the communication that is required to provide the minimum required service, and in these circumstances, it is considered to be a communication service that has high utility value and frequency. To be That is, in order to guarantee the operation of the subscriber side terminating device of the communication system that employs the optical subscriber system, the function of backing up the power supply is an essential function regardless of the frequency of use.

[0007] The period of power failure that can actually occur and the frequency with which the subscriber uses the terminal during the power failure vary, and it is not easy to determine how much backup capacity the terminal device should have. Of course, since it is desirable to have a backup capability that most of the subscribers are satisfied with based on various statistical information in the operation of the actual communication system and power system, it is sufficient to provide the terminal device with a large-capacity power source backup function. However, if a large number of batteries or a large-capacity charger is provided for this purpose, the terminating device becomes large and expensive, and handling of power supply maintenance and management becomes complicated. In particular, when the above-mentioned passive double star system is used, a passive optical element is inserted in the middle of the fiber, and moreover, it is branched to a plurality of subscribers, so that the loss of the optical signal on the optical transmission line is large (the number of branches is 3 for every double
The optical interface circuit provided in the terminating device requires high sensitivity and high output. Optical signals to other subscribers are also transmitted. It is necessary to monitor the signal to detect whether it is a call to itself and operate, or because it is connected to other subscribers by optical fiber, it is necessary to have a secret talk function, a failure diffusion prevention function, etc. Due to the restriction, the power consumption of the terminating device is large (approximately 9 W during operation), and therefore a large capacity backup capacity is required.

Considering the current commercial power supply situation (almost no power outage except in the case of an unexpected disaster), the terminal device is large and expensive because of the power backup function which is required only in the case of power outage and is not normally used. However, it is not desirable for the subscriber that the handling of battery replacement and charger maintenance becomes complicated. Moreover,
Although it is an indispensable function, it is FT
Even if there is a merit that various communication services can be enjoyed by introducing TH, this is to newly provide what was not necessary in the conventional communication system. You may feel complicated. If the subscriber delays the introduction of the terminating device due to the subscriber's awareness of the cost of the terminating device and maintenance and handling, the spread of the optical communication system to each home will be delayed, and it will be difficult to reduce the cost of the entire communication system. However, it is not desirable from the economical point of view.

Therefore, an object of the present invention is to solve the above-mentioned problems in the optical subscriber system. That is, the power supply backup function provided in the termination device on the terminal side of the subscriber is reduced in capacity, downsized, and made economical so as to provide an economical termination device which is easy for the subscriber to use. Then, by providing a terminating device that makes the handling of the terminating device economically expensive from the perspective of the subscriber and facilitates handling, the spread of communication systems using optical subscriber systems is promoted, and the entire communication system Is to contribute to cost reduction. Furthermore, by adopting a configuration that does not require a backup function from a commercial power source, and providing a terminating device that realizes smaller capacity, smaller size, and economy, we will promote cost reduction of communication systems using optical subscriber systems. Is.

More specifically, the present invention provides a terminating device configuration and a method of using the terminating device on the subscriber side so as to reduce the power consumption of the terminating device. It is to provide a terminating device that does not require a backup function. It also provides a configuration and usage of an optical subscriber system that reduces the power consumption of the termination device on the subscriber side, and a termination device that can operate sufficiently even with a small-capacity backup function or a termination that does not require a backup function. It is to provide a device. Another object of the present invention is to provide a circuit and a backup method that constitute a small-sized and low-priced power backup device having an excellent power backup function.

Further, as a backup method at the time of a power failure, there is provided a configuration and a backup method of a communication system and a terminating device capable of backing up a power source at the time of a power failure by the communication system itself which uses an optical subscriber system and does not depend on a commercial power source. To provide. Then, not only during a power outage, the communication system using the optical subscriber system itself supplies the power required during the operation of the terminating device so that the terminating device provided in the subscriber's home operates with a configuration that does not depend on the commercial power supply. An object of the present invention is to provide a configuration of a communication system and a terminating device that can be supplied and a method of supplying power to the terminating device.

[0010]

As means for solving the above-mentioned problems, an optical subscriber line terminating device of the present invention connects an optical signal between a subscriber and a communication facility such as a switchboard or a transmission device to provide an optical signal. The terminating device on the subscriber side in the optical subscriber system that transmits and receives is configured to include means for reducing the power consumption of the terminating device during standby when communication with the communication facility is not actually performed.

With this configuration, an optical communication interface and a signal which is connected to the optical communication interface and is transmitted to communication equipment such as an exchange or a transmission device is assembled into a fixed format or a signal received from the communication equipment is analyzed and called. A communication processing device that performs signal processing for processing signals and call processing with various terminals connected to a terminating device, and a secondary power supply (generally a DC power supply) for operating the optical communication interface and the communication processing device are added. A terminal device comprising a power supply device having a power supply conversion means for generating from a primary power supply (generally a commercial AC power supply) existing in a house and a power supply backup means for accumulating the secondary power supply, in the optical communication interface and communication. For each of the processing devices, a signal is sent from the transmitting device that sends a signal to the communication device and a signal is received from the communication device. In a receiving side device for separating the power supply system, 2 to the transmitting-side apparatus in the standby end device
A means for stopping the supply of the next power source or for separating the functional blocks of the transmission side device and the reception side device to stop the operation of the transmission side device when the termination device is on standby is provided. Then, the receiving side device is provided with a detecting means for detecting that the signal received by the optical communication interface is a signal to the self-terminating device. Further, there is provided control means for performing secondary power supply to the transmission side device or operating the transmission side device in response to the output of the detection means.

The detecting means and the control means detect a call request from various terminals connected to the terminating device, and supply and stop the secondary power source in the same manner as the above operation. A configuration in which a detection unit and a control unit are added so as to stop or start the operation of the transmission side device may be adopted.

As the detecting means, an optical sensing means for monitoring an optical signal received by an optical communication interface to detect its frequency or level and a pattern detecting means for detecting a specific pattern contained in the optical signal are used. Of course, the frequency and level of the signal or the specific pattern may be similarly detected by the electric signal after the photoelectric conversion is performed by the optical communication interface. Further, the new detection means as described above may not be provided, and only the call detection means originally provided in the communication processing device may be powered, and the detection result of the incoming call or the outgoing call of the own device may be used. . As an alternative to the other detecting means, if the self-terminating device is provided with a timer and the self-terminating device is in a standby state where it is not communicating with the communication device, the self-terminating device outputs the timer, and at a predetermined interval for a predetermined period only, It may be configured such that the detection means operates and the outgoing call or the incoming call of the terminating device is monitored, or the detection means in which this timer and the detection means described above are combined may be used.

The control means and the means for stopping the power supply include a plurality of output systems as means for stopping the secondary power supply, and a control circuit and control for stopping / supplying the output of the power supply for each output system. A configuration or method of connecting the detection means and the control signal input terminal using a power conversion means having a signal input terminal, or dividing the output of the power conversion means into a plurality of power output systems, An openable and closable contact means typified by a relay or a switch is provided for each output of the power supply as a means for stopping the secondary power supply, and the output of the power supply is stopped by controlling the opening and closing of the contact means by the output of the detection means. Use the configuration and method of supply.

When the means for stopping the operation is controlled by the control means, it is represented by a signal such as a clock or a frame signal for driving a device or a circuit other than the device or the circuit necessary for the operation of the detecting means. Controls the operation of the device or circuit by stopping / supplying the drive signal of the device or circuit by the contact means or gate circuit similar to the above-mentioned power supply stop, or stopping the oscillation of the drive signal represented by the clock by the output of the detection means. / Use a configuration or method that operates.

As for the method of separating and feeding the power supply system in the terminating device, the configuration in which the transmitting side device and the receiving side device are separated has been shown above, but at least the incoming call to the own device is required as the part that requires constant power feeding. Since it suffices to include the part to be detected, the power supply path may be separated and power supply / stop may be performed in a part of the reception side device similarly to the transmission side device, or constant power supply is required. Even in the case of the portion, power may be intermittently supplied by the timer means or the like. Of course, the power supply system may be divided into a plurality of power supply systems so that the detection means and the control means supply power to a plurality of functional blocks stepwise in accordance with the operating state of the terminal device.

In addition to the above, the optical subscriber line terminating device of the present invention has a structure in which a backup function from a commercial power source is miniaturized or unnecessary, and the optical subscriber line terminating device of the present invention transmits / receives data to / from a communication device as a power source backup means for storing a secondary power source. In addition to the opto-electric conversion circuit provided for the signal to be transmitted, a photoelectric conversion unit represented by a solar cell or a laser receiver is provided around the optical signal receiving unit of the optical communication interface, and laser light or solar light is transmitted via an optical fiber. It was equipped with a means for receiving light such as light and room illumination light, converting it to electricity, and storing it. This storage means
Since the secondary power source generated by the power source conversion means may be used for power source backup as an auxiliary of a charger or a battery for charging and storage, or as a main means for power source backup, the storage capacity and termination may be used. Depending on the power consumption of the device, the terminating device is used without the charger or the battery or with the power conversion means.

In this configuration, the optical signal transmitted between the communication device and the terminating device is a wavelength-multiplexed or time-division multiplexed signal, one light for signal communication and the other light for the photoelectric conversion means. The optical signal may be used as a backup power source or a main power source of the terminating device.

[0019]

[Function] The power supply system of the terminating device is divided into a plurality of parts according to the function and operating state of the circuit to supply power, and an appropriate power supply system is selected for each divided functional block to supply power. Therefore, the detection means operates to detect an incoming call to the self-terminating device or an outgoing call from the self-terminating device, and in the standby state of the terminating device, which is a state in which signals are not transmitted and received with the communication device, Power is supplied only to the devices and circuits required for call origination and incoming call detection, or the control means operates so that devices and circuits other than the necessary devices and circuits do not operate due to the configuration that stops the operation. Similar to the stop control, the power consumption of the terminal device in the standby state is drastically reduced. As a result, the terminals of general subscribers are often in the standby state and the terminator is also in the standby state for a long period of time. Therefore, a power backup device provided to guarantee the minimum required operation of the terminator in the event of a power failure is required. A small capacity is sufficient, and it is effective for downsizing the terminal device and making it economical.

Further, by controlling the supply of power to the device or the circuit and the stop of the operation by the combination of the timer means or the timer means and the detection means, the power consumption of the termination device in the standby state is further reduced. It is more effective in making the terminal device smaller and more economical.

Further, if the power supply is carried out stepwise according to the operating state for each functional block constituting the terminating device or the required devices and circuits are operated, the signal with the communication device is not only in standby. Since the power consumption of the relay device can be reduced in the process of reaching the use state during transmission / reception (communication), the power supply backup device may have a smaller capacity, which is more effective for the downsizing of the terminating device. .

Since the photoelectric conversion means can provide a backup power source for the terminating device and a power source for operating the terminating device, the power source backup device provided to guarantee the operation of the terminating device in the event of a power failure may have a small capacity. Alternatively, since it can be eliminated, it is effective in reducing the size and cost of the terminating device.

In particular, when the optical subscriber system is of the passive double star system, the optical signals for other subscribers are also input to the optical interface of the termination device of the own subscriber, that is, almost always the optical signal. Is inputted to the photoelectric conversion means, the electric power obtained by the photoelectric conversion means becomes large, and the power source backup capability becomes significantly large. Furthermore, if the optical transmission line is multiplexed and the optical signal for the photoelectric conversion means is used, the efficiency of photoelectric conversion is increased and the power backup capability is further improved.

As described above, since the power supply is backed up or assisted by the light supplied from the communication equipment, this is because the power supply system to the terminating device approaches the common power system of the conventional telephone system. From the subscriber's point of view, it is possible to reduce the price sense when introducing the optical subscriber terminal device, promote the spread of the optical communication system, and effectively reduce the cost of the entire system. Furthermore, if the configuration and method for reducing the power consumption as described above and the power supply by the photoelectric conversion means are combined, and the power consumption during the operation of the termination device is also reduced, the termination device can be operated only by the energy from the optical communication path. The optical communication system can be operated and can be used in the same manner as the conventional telephone system by the co-electric system.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an optical subscriber line terminating device and its power feeding method according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing an example of a communication system including an optical subscriber terminal device according to the present invention. The communication system shown in the figure is an optical subscriber line transmission system of the passive double star system introduced by Nikkei New Media shown in the section of the conventional technology, and the optical subscriber terminal device and its power feeding method according to the present invention are used. This is the system in which the effect applied is most noticeable. In the following embodiments, an explanation will be given focusing on an example in which the optical subscriber terminal device of the present invention and its power feeding method are applied to this system. However, as will be apparent from the following description, the optical subscriber terminal of the present invention is The device and its power feeding method are, of course, effective in other optical communication systems such as the single star system. Less than,
An outline of the configuration and operation of the optical subscriber line transmission system will be described.

The optical subscriber line transmission system 1 shown in FIG. 1 includes a communication device 2 installed on the station side and a plurality of subscriber homes 7-1 to 7-.
n is used for communication with an optical signal, and a communication device-side terminating device (hereinafter also referred to as OSU) 3 provided in the communication device 2 and a plurality of subscriber homes 7-1 to 7 -N
OS between the optical subscriber line terminating device (hereinafter also referred to as ONU) 8 according to the present invention provided in each of the
The U3 to the passive star coupler 5 are connected by one single mode optical fiber 4, and further, the passive star coupler 5 to the ONU 8 of each subscriber home 7-1 to 7-n are individually single mode for each subscriber. Optical fiber 6-1
By connecting with 6-n, the communication device 2 connects each subscriber's home 7
Various communication services such as image communication are provided to the terminals -1 to 7-n. That is, the optical signals multiplexed for transmission / reception with the subscriber homes 7-1 to 7-n in the communication device 2 are demultiplexed in the passive star coupler 5, and the optical fibers 6-1 to 6-1 for individual subscribers. It is transmitted and received at each subscriber's home 7-1 to 7-n via -n. In the present embodiment, the subscriber terminal 1 (image terminal) 9 and the subscriber terminal 2 (IS) are used as terminals of the subscriber homes 7-1 to 7-n.
Two telephone terminals (DN compatible telephone terminal) 10 are provided.

FIG. 2 shows the communication device 2 and each subscriber home 7-1.
7 is a signal configuration diagram showing a format of a signal transmitted / received to / from a 7-n terminal. FIG. The passive double star system shown in FIG. 1 has one optical fiber (4, 6).
−1 to 6-n), the optical signal is bidirectionally transmitted and the passive star coupler 5 multiplexes the optical signal.
A signal using an NRZ scramble binary code having a transmission rate of 28.8 Mb / s) as shown in the signal configuration diagram ((1) (a)) of FIG. 1 to
The time-division bidirectional multiplexing (TCM) is used to transmit the downstream signal going to 7-n separately in time.

The signal transmission operation will be described below. Since a downlink signal to a subscriber needs to transmit a signal addressed to a plurality of subscribers within the TCM downlink signal transmission time,
A signal 700 in which signals addressed to a plurality of subscribers are multiplexed by time division multiplexing (TDM) is transmitted (FIG. 2 (1) (a)). The downstream signal 700 is branched in common by the passive star coupler 5 (16 branches in this embodiment), and each subscriber 7-1.
Up to 7-n, but optical fiber lengths 6-1 to 6-
Since n is different, each subscriber 7-1 to 7-n arrives at a different time when the beginning of the downlink signal 700 is received (FIG. 2 (1) (b)). The ONU 8 provided for each subscriber 7-1 to 7-n separates the time slot assigned to each subscriber from the downlink signal 700, and outputs the continuous signal 710 which is a signal of the terminal interface. (In this embodiment, 192 kb /
In step s), speed conversion and format conversion are performed to establish a communication connection with the subscriber terminal (Fig. 2 (2) (a)). On the other hand, the continuous upstream signal 720 from the terminal is
Signal 730 that has been time-axis compressed by ONU8 for transmission
Is transmitted to the optical subscriber line after being converted into a signal 730.
In order to prevent upstream signals from each subscriber from colliding with each other due to variations in transmission delay due to differences in optical fiber length during transmission, and to arrange the subscribers in orderly arranged in the subscriber arrangement determined by the upstream frame. The time-division multiple access control (TDMA control) for transmitting an upstream signal in anticipation is performed, and the signal 74 multiplexed by the passive star coupler 5 is used.
It becomes 0 and is sent to the communication device 2 (FIG. 2 (1) (a)).

As can be seen from the system configuration of FIG. 1 and the signal configuration of FIG. 2, in the above optical subscriber line transmission system, the passive star coupler 5 branches the optical signal to each subscriber 7-1 to 7-n. It is a configuration, and ONU8 prepared for each subscriber,
Since optical signals transmitted and received by the communication device 2 to and from other subscribers that the subscriber's own ONU 8 does not need to process (FIG. 2 (1) (b)), the subscriber's own ONU 8 is input. It is necessary to identify the signal required for the ONU 8 from the optical signal and perform the transmission / reception operation with the communication device 2 (FIG. 2 (2) (a)
(b)).

Below, several embodiments of the optical subscriber line terminating device 8 and its power feeding method according to the present invention applied to the above-mentioned passive double star type optical subscriber line transmission system will be described with reference to the drawings. To do. <Embodiment 1> FIG. 3 is a block diagram showing a configuration of an optical subscriber line terminal device according to the present invention. The optical subscriber line terminating unit (ONU) 8 is a passive star coupler 5 for each subscriber 7
The optical module 20 is connected to the optical fiber 6 branched into -1 to 7-n and performs the electrical signal conversion of the downstream optical signal 700 and the optical signal reverse conversion of the upstream electrical signal, and the downstream burst electrical signal. In addition to synchronizing (separating the signal from the communication device 2 to the ONU), terminating the control information of various transmission lines and converting the frame into the terminal interface signal 710, the upstream signal 720 from the terminal is framed. An optical subscriber line terminating device body functional block 30 for converting and assembling the upstream data 730;
Optical subscriber line terminating device main body function 30 and optical module 2
As a power supply for operating 0, a power supply conversion unit 41 for converting a commercial AC power supply provided at home into a DC power supply and a power supply block 40 including a backup battery-42 for charging the DC power supply for power failure countermeasures. More specifically, the optical module 20 is composed of an optical signal transmitter 21, a receiver 22, and an optical coupler 23. The terminal device main functional block 30 includes a PLL 32, a frame synchronization terminal 33, and a frame converter. 34, an interface 35 (transmitting side: 35-1, receiving side 35-2) with a terminal compliant with the T point defined by the ITU, and an upstream data assembling section 31.

In the ONU having the configuration shown in FIG. 3, the block that needs to be constantly supplied with power even when in standby during non-communication is turned on by itself.
A part for detecting an incoming call and an outgoing call to U, a receiving section 22 for converting an optical / electrical signal in an optical module 20 for detecting an incoming call signal, and a T point reception for detecting an outgoing call signal from a terminal. Part 35
-1 corresponds to this. For other blocks,
Even if power is not supplied during standby, communication is established within 250 ms with a general communication device that receives power after receiving a trigger to start communication (after detection of incoming / outgoing call) and is currently used in large numbers. If it does, it does not pose a problem in operation.

FIG. 4 is also a block diagram showing the structure of the ONU according to the present invention, and shows the detailed structure for realizing the above-described power feeding method. In this figure, ONU8
The function block that is constantly supplied with power in 0 is a receiving unit 22 for converting an optical / electrical signal in the optical module 20 whose power supply path is indicated by a circle A, an incoming signal detecting unit 50, and a terminal. The other points are the T-point receiving unit 35-1 and the call detection unit 35-3 that detect the call signal of FIG. This block receives power when closed. In the present embodiment, the power supply switch 431 is an external circuit of the power supply unit 40. However, the power supply switch 431 uses a power supply in which the power supply unit 40 is built, and the power supply path circle B is generated by an incoming / outgoing call detection trigger (control signal). Power may be supplied.

The power feeding operation will be described more specifically. The receiving section 22 uses the optical subscriber line downlink signal 7 shown in FIG.
Incoming call signal transmitted in its own time slot of 00 (this is a unique pattern with a fixed length predetermined by the system).
Signal is converted into an electric signal, the incoming call signal detection unit 50 determines it as an incoming call signal, and the control unit of the incoming call signal detection unit 50 turns the contact of the power feeding SW 431 from OFF to ON and the power supply path circle B
The power is supplied to the circuit section that is supplied with. Further, in detecting a call from the terminal, a call signal (I
In SDN 64 kb / s service, INFO1
Signal is received by the T-point receiving unit 35-1, and the calling signal detection unit 35-3 determines the calling, and then the control unit turns the contact of the power feeding SW 431 from OFF to ON in the same manner as the above-mentioned incoming call. Power is supplied. Since the control unit of the incoming call signal detection unit 50 receives the incoming call signal and the outgoing call signal only at the head of the call (since they do not come continuously), the incoming call signal and the outgoing call signal are temporarily determined at the time of determination by the respective detection units. If the detection signal is detected, a latch type control is performed in which the power feeding SW 431 is not changed from ON to OFF even after the detection signal disappears. Turn on the main power supply SW431
The control for returning from N to OFF is performed by receiving a stop command from an upper exchange (not shown) at the end of communication.

The above-mentioned incoming / outgoing call detection and power feeding operation will be described in detail below. FIG. 5 is a block configuration diagram showing the configuration of the incoming call signal detection unit 50 provided in the ONU 80 of the present invention, and FIG. 6 is an operation diagram showing the incoming call operation detection method of the incoming call signal detection unit 50. . The incoming call signal detection unit 50 receives an incoming call activation pattern (for example, a fixed pattern such as 1010) in a time slot for notifying an incoming call from the optical subscriber line downstream frame (700 in FIG. 2) to the own terminal. The receiver 22
The fixed pattern (FIG. 6, a) converted into an electric signal is passed through a frequency pass filter 501 to obtain a frequency spectrum like a waveform b in FIG. This output is the peak detection circuit 50.
2 and then the waveform (FIG. 6, c) is passed through the comparator 50.
It is possible to determine that the incoming call activation pattern is received as shown by the waveform d in FIG. That is, this waveform can be used as a trigger signal for supplying power to the main body of the ONU 80. In this embodiment, the power supply is configured to control the power feeding SW 431 by the relay 505, and in order to operate the relay 505, the waveform of d is converted to a continuous wave (e in FIG. 6) by the integrator 504. A signal obtained by converting and opening / closing the relay contact 506 (FIG. 6, f) is a power feeding SW4
The opening and closing of 31 contacts was controlled. As an alternative to the relay 505, it is possible to use an analog switch having a function equivalent to that of the relay 505 and capable of outputting a signal for controlling the opening and closing of the contact as shown in FIG. In any case, as described above, once the incoming call activation pattern is received, even if the incoming call activation pattern is lost after that, the switch operation of the power feeding SW 431 is of a latch type so as to maintain the ON state, Alternatively, the power supply 507 is used and then the power is used to maintain the operation. When this switch is returned to its original position, a stop command from the exchange is received, and the relay contact 506 is controlled to be released by the electric power supplied from the power source 507. With the configuration and the power feeding method of the ONU of the present invention as described above, the receiving unit 22 and the T-point receiving unit 35-1 in the standby state.
Since the power supply to the blocks other than the above is stopped and the power supply is started after the communication start trigger is received, the power consumption of the ONU during standby is approximately 0.5 W and the power consumption of the conventional ONU that operates constantly (approximately 9 W). Greatly reduced.

In the above embodiment, the power supply path of the power source is divided into the constant power supply path A and the power supply path B which performs power supply after the calling / incoming call is detected.
If the configuration is further divided and a plurality of power feed SWs are sequentially operated according to the state of the incoming call signal detection unit 50 to sequentially feed power in detailed functional block units, the power consumption can be further reduced. . Explaining a specific configuration example with reference to FIG. 4, in the case of an incoming call, first, in the direction from the optical module 20 to the T point interface, the PLL 32, the frame synchronization 33, the frame conversion 34, the T point transmitting unit 35- The data assembling unit 3 is supplied in the direction from the T point interface to the optical module 20 by sequentially supplying power from the power supply SW in the order of 2.
1. Power may be supplied in the order of the optical module transmitter 21, or power may be sequentially supplied in the order of a block in which several functional blocks arranged in this order are combined. In the case of a call, the power is supplied in the reverse order of the call reception. do it.

<Embodiment 2> In this embodiment, an ONU configuration and a power feeding method for improving the ONU configuration and the power feeding method described above to further reduce the power consumption during standby will be shown. Figure 7
FIG. 7 is a block diagram showing another configuration of the ONU of the present invention. In the ONU 80 of FIG. 4 shown in the previous embodiment, the backup battery 42 is charged and the A
Since the C / DC converter 41 always operates, even if the power on the secondary side (ONU internal circuit) is reduced, AC / DC
Due to the internal conversion efficiency of the converter itself, there is a limit to the power reduction of the AC power supply that operates the ONU 80. Therefore, the ONU 81 of this embodiment is the ONU 80 shown in FIG.
In addition, the counter or timer circuit unit 530 is provided, and during standby, the AC / DC converter is further intermittently operated by the counter or timer circuit unit 530. The intermittent operation is performed only during standby, and during communication, the intermittent operation is stopped in order to supply electric power to maximize the efficiency of the AC / DC converter. Even with the configuration of this embodiment, the low power consumption as shown in the previous embodiment or the low power consumption by another method is realized, so that the AC / DC converter 41 is intermittently provided during normal standby. Even if it is operated, it can be operated by the electric power charged in the backup battery-42, so that it does not hinder the operation of the ONU 81. Of course, the backup battery 42 is also intermittently charged, which causes a problem that the charging time becomes long, but this is only a temporary start of use and is not a problem in practice.

An example of the intermittent operation of the ONU 81 shown in this embodiment will be described below. FIG. 8 is a time chart showing an intermittent operation example of the ONU 81. In the intermittent operation of the AC / DC converter 41, the counter or timer unit 530 integrates the downlink data a (700 in FIG. 2) of the optical subscriber line received from the receiving unit 22 of the optical module 20 in FIG. Then, it is converted into a continuous signal b in frame units (this can be obtained by a well-known tank circuit or the like). The counter or timer unit 530 divides this signal b as a clock source of the counter or timer, and the AC / DC power supply 41 controls the ON / OFF of the power supply so that the output voltage is stable (the power supply of the present embodiment has a relation. Is normally 0.5 s).
A pulse d for controlling ON / OFF of the C / DC power supply is created, and when the ONU 81 is in a standby state, ON / OFF control of the AC / DC power supply is repeatedly performed by this pulse d.
As described above, the backup battery-42 supplies power to the circuit that requires constant power supply even in the standby state, as shown by the power supply path circle A in FIG. 7 (of course, the AC / DC power supply 41 in the standby state). If is ON, this AC / D
The C power source 41 may supply power), so incoming and outgoing calls can be detected. When the call state or the call incoming state is detected from the standby state and the communication state is established, the control operation of the counter or the timer unit 530 is stopped by the signal for controlling the power feeding SW 431 shown in the previous embodiment.

When the ONU 81 of this embodiment is applied to a passive double star optical subscriber line transmission system, another ONU 81 as shown in the time chart of FIG.
The signal received from the optical subscriber line is used as the clock source of the counter or the timer unit 530 because the signal to the optical subscriber line is also received. It is also possible to provide a single oscillator inside the counter or the timer unit 530 to perform timer control without using the received data, and the same power reduction effect can be obtained. According to this embodiment, the ON / OFF time of the AC / DC power supply in the standby state is almost the same as in FIG. 8, so that the power consumption of the ONU in the standby state can be further reduced to about half. .

<Embodiment 3> In the following, the ON according to the present invention is performed.
Several other configurations of U and power feeding methods are shown. In particular,
In the ONU shown in the above-described embodiment, the backup battery is charged by the AC / DC power source, whereas in the present embodiment, the backup battery is charged by a power source other than the AC / DC power source. Or the configuration of the ONU that can realize the power feeding method like the conventional telephone system by eliminating the AC / DC power source of the ONU itself by this configuration and the power feeding method. As a power source other than an AC / DC power source, a method of charging the energy obtained by converting an optical signal transmitted / received by an optical fiber into an electric signal by a photoelectric conversion means to use as a power source, and installing an ONU body by a solar cell or the like The configuration of two types of ONUs, which is a method of charging the energy obtained by converting a light source indoors or outdoors into an electric signal and using it as a power source, will be described. .

FIG. 9 is a block diagram showing another configuration example of the ONU according to the present invention. Although not specifically shown in the block diagram of the present embodiment, the functional block separation configuration and the power feeding method for reducing the electric power when the ONU is on standby are the same as those in the first or second embodiment. ON of the present invention
U82 is for branching a part of the current generated by the down signal of the photodiode 201 in the receiver 22 of the optical module 20 to charge the backup battery 42 in the power source 40 via the diode 91. is there. Further, the optical signal of the receiving unit 22 is branched by the optical coupler (FIG. 11, 212) as in the embodiment (FIG. 11) described later, and then this light is converted into electric energy by the photoelectric conversion means (FIG. 11, 213). The backup battery-42 may be charged by means of charging. As a result, the backup battery by the AC / DC converter 41
It is possible to reduce the charging current to 42. Furthermore, if the photoelectric conversion means (FIGS. 11 and 213) has a function of accumulating electric energy, which has been developed in recent years, the backup battery 42 can be reduced or eliminated. With the ONU 82 of this configuration, it is possible to extract the charging current from the photodiode 201 and charge the backup battery 42 even during communication, and in particular, the ONU of the passive double star system. ONU 8 as in this embodiment
2 is used, the downlink optical signal for communication is always received even in the standby state during non-communication as shown in FIG. 2, so that the photodiode 201 and the photoelectric conversion means for receiving the optical signal are Therefore, the electric energy is always obtained, and the backup battery-42 can be easily charged. Alternatively, depending on the photoelectric conversion efficiency, a backup battery
The charge capacity of 42 is reduced, or A as in the previous embodiment is used.
The C / DC converter 41 may be an ONU that can operate with an unnecessary configuration.

FIG. 10 is also a block diagram showing another configuration example of the ONU according to the present invention. In the ONU 82 shown in FIG.
On the other hand, the ONU 83 of this embodiment is different from the charging current for charging the backup battery 42 obtained from the receiving side.
When the transmitter 21 in the optical module 220 during communication is equipped with a photodiode 216 for transmission monitor, the monitor light is used to obtain a charging current to charge the backup battery 42. Is to do. This configuration is for turning on the passive double star system.
When the output power is U, the output power is set high so that the optical output on the transmission side can be transmitted to the OSU 3 (7 km at maximum in this embodiment) even if it is attenuated by the passive star coupler 5 in the optical transmission line. Photodiode 216 for transmission monitor
Since a large charging current can be obtained from the backup battery 42, the charging current can be reduced to the backup battery 42 to extend the power supply time by the backup battery 42 or from the AC / DC converter 41 to the backup battery 42. This configuration focuses on the fact that the charging current to 42 can be reduced. Even with such a configuration, the backup battery 42 is charged during communication, so that the ONU can be used even in an emergency such as a power failure.

FIG. 11 is also a block diagram showing another example of the configuration of the ONU according to the present invention, in which the signals in the optical fiber of the optical subscriber transmission system are wavelength-multiplexed so that the OSU and the ONU.
2 shows the configuration of an ONU used in a system that transmits and receives a plurality of types of optical signals to and from. ONU of this embodiment
Reference numeral 84 denotes a communication signal λ by an optical wavelength division multiplexing service in an optical subscriber transmission system of a passive double star system.
_When providing a video service with a wavelength λ ₂ (wavelength of 1.5 μm in this embodiment) different from that of ₁ , the downlink signal of the optical subscriber line is the same as that of the communication signal. In addition to the service signal, a video service signal for another terminal is also input, that is, utilizing the fact that the video service signal comes almost always, the charging current is extracted from the video service signal and the backup battery- Is a way to charge.

The specific structure and charging method will be described.
The NU 84 is provided with a WDM filter 211 for separating the wavelength-multiplexed signal in the optical module 230 for each wavelength, and after separating the communication signal and the video service signal, the video service signal is sent by the optical coupler 212. The video service signal and the charge current are separated into a photodiode 213. Then, as in the embodiment shown in FIG. 9, the backup battery -4 is generated by the current generated by the photodiode 213.
2 is to be charged. Although the present embodiment uses the video service signal, even in a system in which such a service is not provided to the subscriber, the charging optical signal is exclusively transmitted by the wavelength multiplexing technique as in the present embodiment. Then, the backup battery-42 may be charged. As a specific example, the optical signal of wavelength λ ₂ is wavelength-multiplexed with the communication signal λ ₁ as an optical signal for charging, and the ONU 84 uses the optical signal of wavelength λ ₂ separated by the WDM filter 211 as an optical coupler 212. The backup battery 42 can be easily charged by directly supplying it to the photodiode 213 without going through.

If the backup battery 42 is charged by such wavelength multiplexing, an optical signal can be constantly supplied at a wavelength different from the signal for communication, so that the optical signal of the passive double star system of this embodiment is used. Not only the subscriber transmission system but also the single star optical transmission system makes it easy to charge the backup battery,
An ONU capable of operating with a configuration in which the charging current to the backup battery 42 by the AC / DC converter is reduced or the charging capacity is reduced, or the AC / DC converter 41 as shown in the previous embodiment is unnecessary is realized. It can be done.

FIG. 12 is also a block diagram showing another configuration example of the ONU according to the present invention, and shows a configuration of an ONU 85 which is a combination of all the configuration examples of the ONU shown in FIGS. 9 to 11 described above. Of course, this configuration is one embodiment of the configuration of the ONU, and the ONU may be configured by appropriately combining the configuration examples of the ONUs shown in FIGS. Absent. If such a combination is implemented, the effect brought about by the configuration of the ONU according to the present invention described above becomes more remarkable.

Next, an embodiment of the ONU for charging the backup battery using the photoelectric conversion means such as a solar cell will be described. FIG. 13 is a block diagram showing another configuration example of the ONU according to the present invention, in which the backup battery 42 of the ONU 86 is charged by the solar cell 90. The solar cell 90 is installed in the body of the ONU 86 and connected to the backup battery-42, or O
It may be installed in a unit different from the NU86 and connected to the backup battery-42, and the installation place is free. Further, the solar cell 90 may be installed near the joule in the ONU 86, and photoelectric conversion may be performed by the light received by the optical module, as in the above-described embodiment. If the solar cell is used as in the present embodiment, the solar cell itself has a power storage function, so depending on the storage capacity and the power backup capacity required for the ONU, the backup battery-42 or AC / DC conversion is performed. ON without device 41
It can also be operable as U. Further, if the ONU is configured by selecting the configurations shown in the above-described various embodiments (the configuration and the power feeding method for reducing the power stoppage, and the configuration and the method for charging) in a combination required for the system. , A
An ONU without the C / DC converter 41, that is, a co-electric system similar to that of a conventional telephone is mainly used, and the minimum necessary communication function is secured even in an emergency, and it is economical.
The NU will be able to provide the subscriber.

[0047]

According to the optical add / terminate device of the present invention, the power consumption in the standby state can be greatly reduced, so that the power supply backup device at the time of power failure can be downsized, or can be dispensed with. The terminating device on the subscriber side of the system is downsized, is low in price, and is easy to handle, and even if it is small, it has sufficient power source backup capability. Therefore, while normally using various communication services with various multimedia-compatible communication devices,
Even if an emergency situation such as a power failure occurs, the subscriber can build a highly reliable optical subscriber communication system that enables reliable communication.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a communication system including an optical subscriber line terminal device of the present invention.

FIG. 2 is a signal configuration diagram showing a configuration of signals similarly transmitted and received in the communication system.

FIG. 3 is a block diagram showing an example of an optical subscriber termination circuit used in an optical subscriber communication system.

FIG. 4 is a block diagram showing an embodiment of an optical subscriber termination circuit according to the present invention.

FIG. 5 is a block diagram showing a detailed circuit configuration of the same.

FIG. 6 is an operation explanatory diagram illustrating an operation of the optical subscriber termination circuit of FIG.

FIG. 7 is a block diagram showing another embodiment of the optical subscriber termination circuit according to the present invention.

8 is an operation explanatory diagram explaining an operation of the optical subscriber termination circuit of FIG.

FIG. 9 is a block diagram showing another embodiment of the optical subscriber termination circuit according to the present invention.

FIG. 10 is a block diagram showing another embodiment of the optical subscriber termination circuit according to the present invention.

FIG. 11 is a block diagram showing another embodiment of the optical subscriber termination circuit according to the present invention.

FIG. 12 is a block diagram showing another embodiment of the optical subscriber termination circuit according to the present invention.

FIG. 13 is a block diagram showing another embodiment of the optical subscriber termination circuit according to the present invention.

[Explanation of symbols]

1 ... Optical subscriber transmission system, 2 ... Communication device, 3
... Termination device (OSU), 4, 6 ... Optical fiber,
5 ... Passive star coupler, 7 ... Subscriber home,
8 ... Optical subscriber line side terminating device (ONU),
9, 10 ... Subscriber terminal, 20 ... Optical module, 21 ... Transmitting unit, 22 ... Receiving unit,
23 ... Optical coupler, 30 ... Main body function part,
31 ... Data assembling unit 32 ... PLL, 33 ... Frame synchronization termination, 34 ... Frame conversion, 35 ... T point transmitting / receiving unit, 40 ... Power supply unit, 41 ... AC
/ DC conversion, 42 ... Backup battery, 50 ...
Incoming call detection unit, 80-86 ... Optical subscriber line side terminal device (O
NU), 90 ... Solar cell, 91-93 ... Diode, 200, 220, 230, 240 ... Optical module, 211 ... WDM, 201, 213, 216 ... Photo diode, 212. ..Optical couplers, 431 ...
Power feeding SW, 530 ... Timer, 700 ... Optical subscriber line down signal, 710 ... Terminal interface down signal, 720 ... Terminal interface up signal, 73
0 ... Optical subscriber line upstream signal, 740 ... Optical subscriber line upstream signal (TDMA).

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location H04B 10/12 10/02

Claims (29)

[Claims] 1. A subscriber-side terminating device of a communication system for transmitting and receiving an optical signal between a subscriber and a station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface to perform signal processing and A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device including a storage means for controlling, a control means for detecting an incoming call from the station side equipment and a control for controlling the supply stop of the second power source in response to the output of the detection means. Means for separately supplying power to the first system that constantly supplies power to the second power supply system and the second system that has a function to start and stop power supply, The control means output means during an incoming call detection, optical network unit formed by supplying the second power source to the second system. 2. A subscriber-side terminating device of a communication system for transmitting and receiving optical signals between a subscriber and station-side equipment, which is connected between an optical interface and a terminal interface and between the optical interface and the terminal interface. A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device including a storage means for controlling, a control means for detecting an incoming call from the station side equipment and a control for controlling the supply stop of the second power source in response to the output of the detection means. Means for separating the second power supply system into a first system that constantly supplies power and a second system that has a function to start and stop power supply, and the first system is Power is supplied to the receiving unit, the detecting unit, and the control unit of the optical interface, and the second system is configured to supply power to the transmitting unit, the terminal interface, and the communication processing unit of the optical interface, and the detecting unit detects the incoming call. The control means is an optical subscriber line terminating device configured to supply the second power source to the second system. 3. The first system supplies power to the receiving section of the optical interface, the receiving section of the communication processing means, the detecting means and the control means, and the second system supplies the transmitting section of the optical interface. 3. The optical subscriber line terminating device according to claim 2, wherein power is supplied to a transmission section of the communication processing means and a terminal interface. 4. The detecting means also has a function of detecting a call from a terminal, and the terminal interface comprises a signal transmitting section to the terminal and a signal receiving section from the terminal, wherein the signal receiving section is the first system. Power is supplied to the signal transmission unit by the second system, and the control unit supplies the second power to the second system when the detection unit detects a call or an incoming call. The optical subscriber line terminating device according to claim 2 or 3. 5. A subscriber-side terminating device of a communication system for transmitting and receiving an optical signal between a subscriber and a station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface to perform signal processing and A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device provided with a storage means for operating the optical interface, the terminal interface and the communication processing means in response to the detection means for detecting an incoming call from the station side equipment and the output of the detection means. Control means for controlling the stop start of the optical interface, the receiving unit, the detection means and the control means of the optical interface are always operated, The interface transmission unit, the terminal interface, and the communication processing unit are configured to be operated by the control unit, and when the detection unit detects an incoming call, the control unit controls the operations of the optical interface transmission unit, the terminal interface, and the communication processing unit. Optical subscriber line termination equipment started. 6. The receiving unit of the optical interface, the receiving unit of the communication processing unit, the detecting unit, and the control unit are always operated, and the transmitting unit of the optical interface, the terminal interface, and the transmitting unit of the communication processing unit are controlled by the control unit. 6. The optical subscription according to claim 5, wherein the detection means detects the incoming call, and the control means starts the operations of the transmission unit of the optical interface, the terminal interface, and the transmission unit of the communication processing unit. Line termination equipment. 7. The detecting means also has a function of detecting a call from the terminal, and the terminal interface comprises a signal transmitting section to the terminal and a signal receiving section from the terminal, and the signal receiving section is always operated, 7. The optical subscription according to claim 5, wherein the signal transmission section is configured to be operated by the control means, and the control means operates the entire optical subscriber line termination device when the detection means detects a call or an incoming call. Line termination equipment. 8. A subscriber-side terminating device of a communication system for transmitting and receiving an optical signal between a subscriber and a station-side facility, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface to perform signal processing and A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device equipped with a storage means, the operation of the power supply conversion means corresponding to the detection means for detecting an incoming call from the station side equipment, the timer means, and the output of the detection means and the timer means. And a function for starting or stopping the optical subscriber line termination device, the power conversion means corresponds to the output of the timer means when the optical subscriber line terminating device is in a standby state. Period to supply the second power supply, said power conversion means detecting means when an incoming call detected, the optical network unit formed by continuously supplying the second power supply. 9. A subscriber-side terminating device of a communication system for transmitting and receiving an optical signal between a subscriber and a station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface to perform signal processing and A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device including a storage means for controlling, a control means for detecting an incoming call from the station side equipment and a control for controlling the supply stop of the second power source in response to the output of the detection means. Means, timer means, a function for starting or stopping the operation of the power supply converting means in response to the outputs of the detecting means and the timer means, First for feeding continuously the power supply system
And a second system having a power supply stop start function, the first system supplies power to the receiving unit, the detection means, and the control means of the optical interface, and the second system includes
Power is supplied to the transmission unit of the optical interface, the terminal interface, and the communication processing unit, and when the optical subscriber line terminating device is on standby, the power supply conversion unit turns on the second power supply for a period corresponding to the output of the timer unit. When the incoming call is detected by the detection means, the power supply conversion means continuously supplies the second power supply, and the control means supplies the second power.
An optical subscriber line terminating device configured to supply the second power source to the system. 10. The first system supplies electric power to a receiving section of the optical interface, a receiving section of the communication processing section, a detecting section, a control section and a timer section, and the second system supplies the optical interface of the optical interface. 10. A structure in which power is supplied to the transmission unit, the transmission unit of the communication processing unit, and the terminal interface.
The optical subscriber line terminating device described. 11. The detecting means also has a function of detecting a call from a terminal, and the terminal interface comprises a signal transmitting section to the terminal and a signal receiving section from the terminal, wherein the signal receiving section is provided in the first system. Power is supplied to the signal transmission unit by the second system, and when the detection unit detects a call or an incoming call, the control unit sets the second system to the second system.
The optical subscriber line terminating device according to claim 9 or 10, which is supplied with the power supply. 12. A subscriber-side terminating device of a communication system for transmitting and receiving an optical signal between a subscriber and a station-side facility, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface to perform signal processing and A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. An optical subscriber line terminating device comprising a storage unit for storing the output of the photoelectric conversion unit in the storage unit. 13. A subscriber-side terminating device of a communication system for transmitting and receiving optical signals between a subscriber and station-side equipment, which is connected between an optical interface and a terminal interface and between the optical interface and the terminal interface. A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device including a storage means for converting the optical signal to the second power source, a photoelectric conversion means is provided, and an output of the photoelectric conversion means is stored in the storage means. Line termination equipment. 14. A subscriber-side terminating device of a communication system for transmitting and receiving an optical signal between a subscriber and a station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface. In an optical subscriber line terminating device including communication processing means for performing call processing, photoelectric conversion means for converting the optical signal into an optical interface, a terminal interface, and a power supply for operating the communication processing means, and an output of the photoelectric conversion means. An optical subscriber line terminating device comprising: storage means for storing 15. The optical subscriber line terminal device according to claim 12, wherein the photoelectric conversion means also has a power storage function. 16. An optical signal received from the station side equipment is terminated by a first signal received by a terminal connected to the terminal interface and a terminal different from the terminal or a device different from a self-terminating device. The second signal is a multiplexed signal, and the photoelectric conversion means separates the second signal and converts it into a power supply for operating the optical interface, the terminal interface, and the communication processing means. 16. The optical subscriber line terminating device according to any one of 1 to 15. 17. The optical signal received from the station side equipment includes an optical signal of a first wavelength including a signal received by a terminal connected to the terminal interface and a second signal having a wavelength different from the first wavelength. A signal obtained by multiplexing an optical signal of a wavelength, wherein the photoelectric conversion means separates the optical signal of the second wavelength and converts it into a power supply for operating the optical interface, the terminal interface and the communication processing means. Items 12 to 1
6. An optical subscriber line terminating device according to any one of 6 above. 18. The optical signal of the second wavelength is an optical signal continuously supplied to the optical subscriber line terminating device.
The optical subscriber line terminating device described. 19. The optical subscriber line terminating device operates the optical interface, the terminal interface and the communication processing means in response to the detection means for detecting an incoming call from the station side equipment and the output of the detection means. Control means for supplying or stopping power, and separating the power supply system of the power supply into a first system for constantly supplying power and a second system having a function of stopping and supplying power, The receiving unit, the detecting unit, and the control unit are powered by the first system, and the transmitting unit of the optical interface, the terminal interface, and the communication processing unit are powered by the second system, and the detecting unit is installed. The optical subscriber line terminating device according to any one of claims 12 to 18, wherein the control means supplies the power to the second system when a call is detected. 20. A subscriber-side terminating device of a communication system for transmitting and receiving optical signals between a subscriber and station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface to perform signal processing and In an optical subscriber line terminating device provided with communication processing means for performing call processing, a storage means for storing a power source for operating the optical interface, the terminal interface and the communication processing means by the output of the photoelectric conversion means and the photoelectric conversion means. A first means for detecting the incoming call from the station-side equipment, and a control means for controlling the stop of the power supply in response to the output of the detection means;
System and a second system having a function of starting and stopping the power supply separately, and the control means supplies the power source to the second system when the detection means detects an incoming call. Line termination equipment. 21. A subscriber-side terminating device of a communication system for transmitting and receiving an optical signal between a subscriber and a station-side facility, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface to perform signal processing and A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device including a storage unit, a detection unit for detecting an incoming call from the station side equipment and a control unit for controlling the stop of the supply of the second power source are provided. The power supply system is configured to separately supply power to the first system that constantly supplies power and the second system that has a function to start and stop power supply, and when the optical subscriber line terminating device is on standby. An optical subscriber line terminating device that supplies the second power supply to the second system when the second power supply is supplied to the first system and the detection means detects an incoming call. Power supply method. 22. A subscriber-side terminating device of a communication system for transmitting and receiving optical signals between a subscriber and station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface to perform signal processing and A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device including a storage means, a detection means for detecting an incoming call from the station side equipment, a control means for controlling stop start of operations of the optical interface, terminal interface and communication processing means. And a receiving unit, a detecting unit, and a controlling unit of the optical interface are always operated, and when the detecting unit detects an incoming call. Feeding method for an optical network unit to start operation of the transmission unit and the terminal interface and the communication processing means of the optical interface in the control unit. 23. A subscriber-side terminating device of a communication system for transmitting and receiving an optical signal between a subscriber and station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface. A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device provided with a storage unit for storing the optical subscriber line, the optical subscriber line termination device is provided with a detecting unit for detecting an incoming call from the station side equipment, a timer unit, and a function for starting and stopping the operation of the power source converting unit. When the power line terminating device is on standby, the power conversion means supplies the second power for a period corresponding to the output of the timer means,
When the detection means detects an incoming call, the power conversion means,
A power feeding method of an optical subscriber line terminating device for continuously supplying the second power source. 24. A subscriber-side terminating device of a communication system for transmitting and receiving optical signals between a subscriber and station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface. A communication processing means for performing call processing and a power supply conversion means for generating a second power supply for supplying power to the optical interface, the terminal interface and the communication processing means from a first power supply provided on the subscriber side and the second power supply are accumulated. In the optical subscriber line terminating device provided with a storage unit, a detection unit that detects an incoming call from the station side equipment, a control unit that controls the supply stop of the second power supply, a timer unit, and the power supply conversion unit. And a function for starting or stopping the operation of the second power supply, a first system for constantly supplying power to the supply system of the second power source, and a function for starting and stopping the power supply. A structure for separating the feed into two lines,
When the optical subscriber line terminating device is on standby, the power conversion means supplies the second power for a period corresponding to the output of the timer means, and when the detection means detects an incoming call, the power conversion means, A power feeding method for an optical subscriber line terminating device, wherein the second power source is continuously supplied and the control means supplies the second power source to the second system. 25. A subscriber-side terminating device of a communication system for transmitting and receiving optical signals between a subscriber and station-side equipment, which is connected between an optical interface and a terminal interface and the optical interface and the terminal interface. In an optical subscriber line terminating device including communication processing means for performing call processing, photoelectric conversion means for converting the optical signal into an optical interface, a terminal interface, and a power supply for operating the communication processing means, and an output of the photoelectric conversion means. A power supply method for an optical subscriber line terminating device, wherein the photoelectric conversion means or the storage means supplies power to the optical interface, the terminal interface, and the communication processing means. 26. A subscriber-side terminating device of a communication system for transmitting and receiving optical signals between a subscriber and station-side equipment, which is connected between an optical interface and a terminal interface and between the optical interface and the terminal interface. In an optical subscriber line terminating device provided with communication processing means for performing call processing, a storage means for storing a power source for operating the optical interface, the terminal interface and the communication processing means by the output of the photoelectric conversion means and the photoelectric conversion means. The system includes a detection unit that detects an incoming call from the station-side equipment and a control unit that controls the supply stop of the power supply, and has a first system that constantly supplies power to the power supply system and a power supply stop start function. The second system is configured to separately supply power, and the photoelectric conversion means or the storage means is in the first system when the optical subscriber line terminating device is on standby. Feeding and, when said detecting means detects an incoming call, the feeding method of the optical network unit to said control means also supply power to the second system to. 27. The optical signal received from the station side equipment is terminated by a first signal received by a terminal connected to the terminal interface and a terminal different from the terminal or a device different from the self-terminating device. 27. The optical signal according to claim 25 or 26, wherein the second signal is a multiplexed signal, and the photoelectric conversion means converts the second signal into a power supply for operating the optical interface, the terminal interface and the communication processing means. Power supply method for subscriber line termination equipment. 28. The optical signal received from the station side equipment includes an optical signal of a first wavelength including a signal received by a terminal connected to the terminal interface and a second optical signal having a wavelength different from the first wavelength. 28. A signal in which an optical signal of a wavelength is multiplexed, and the photoelectric conversion means converts the optical signal of the second wavelength into a power supply for operating the optical interface, the terminal interface and the communication processing means. A method for supplying power to the optical subscriber line terminating device described in 1. 29. A power feeding method for an optical subscriber line terminating device according to claim 28, wherein the optical signal of the second wavelength is continuously supplied to the optical subscriber line terminating device.