JP3465069B2 - Home adapter diagnosis method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention controls a plurality of home units etc. which are installed in respective dwelling units such as dormitories and condominiums for controlling various abnormalities such as fire sensors and gas sensors and which are housed in a private branch telephone exchange. Home adapter diagnostic method for confirming the operation of the home adapter of

[0002]

2. Description of the Related Art Conventionally, a telephone interface of a private branch exchange cannot control a sensor for detecting various abnormalities or a home adapter for managing a home unit or the like. For this reason, when this kind of home adapter is housed in a private branch exchange, it is constructed by using a special interface capable of data communication, and the diagnosis of the home adapter is made depending on whether data communication is possible or not.

[0003]

However, in the above-mentioned conventional technique, when it becomes necessary to connect a home adapter for controlling various sensors and home units, it is necessary to change the telephone interface, and accordingly, it is necessary to change the telephone interface. The problem arises that the processing of the private branch exchange for controlling the home adapter becomes complicated.

The present invention has been made in view of the above circumstances, and an object thereof is to check the normality of the home adapter from the private branch exchange that accommodates the home adapter installed in each dwelling unit at any time and at any number of times. It is to provide a home adapter diagnostic method capable of diagnosing.

[0005]

In order to achieve the above-mentioned object, the invention of claim 1 has a plurality of home adapters installed in each dwelling unit such as an apartment and controlling a plurality of functions; A method of diagnosing a home adapter having a private telephone exchange housed via a wire analog interface, wherein, when diagnosing the home adapter, by sending a polarity reversal signal from the private telephone exchange to the home adapter, First means for activating the home adapter and transmitting a diagnostic signal for confirming normality from the private branch exchange to the home adapter by receiving a response signal from the home adapter upon activation of the home adapter Second means, and by receiving and analyzing the diagnostic signal from the home adapter to the local And a third means for transmitting a disconnect signal after transmitting a reply signal to the switch, which confirms the normality of the home adapter by receiving the reply signal and the cutting signal in the private branch telephone exchange.

According to a second aspect of the present invention, the private branch exchange is capable of diagnosing a home adapter that controls a plurality of functions, an arbitrary number of times in an arbitrary time zone.

[0007] The invention of claim 3 is <br/> accommodated in the private branch telephone exchange, check-in registration to the home adapter
Recording and includes a multi-function telephone having a registration means for performing checkout registration, check-in by the registration means
Only the registered home adapter is diagnosed.

According to a fourth aspect of the present invention, when an abnormality occurs in the diagnosis of the home adapter, the private branch exchange notifies the multi-function telephone of the abnormal state by a visible lamp, a ring, and a display. .

[0009]

According to the invention of claim 1, the diagnosis of the home adapter can be performed from the private branch exchange.

According to the second aspect of the invention, the diagnosis of the home adapter can be performed any number of times in any time zone.

According to the third aspect of the present invention, check-in and check-out registration can be performed with respect to the home adapter from a multifunction telephone having function buttons, which are extension terminals, and a display. Diagnosis can only be made to the home adapter inside.

Further, according to the invention of claim 4, when the abnormality occurs in the diagnosis of the home adapter, the private branch exchange is visually displayed and visually informed to the multi-function telephone. Information can be displayed.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram of a telephone exchange system equipped with a home adapter diagnosis function of the present invention installed in a dormitory or condominium.

In FIG. 1, a private branch exchange 100 is
A call path switch 101 that forms a call path between various terminal devices or between a terminal device and a trunk, a central control device 102 that controls the entire private branch exchange 100, various programs such as a switching operation control program, station data, And storage device 103 for storing various data tables and the like
Is equipped with.

Call path switch 1 of the private branch exchange 100
Reference numeral 01 designates a plurality of telephone interface circuits 110 for controlling an analog line type general telephone, a plurality of station line trunks 132 for controlling an interface with a station line, and a P
A PB signal receiving trunk 130 for receiving a B signal and analyzing the contents thereof (numeric information of the received PB signal, etc.), and a PB
A PB signal transmission trunk 131 for transmitting a signal, a multi-function telephone interface circuit 120 for controlling the multi-function telephone 121, and a doorphone interface circuit 122 for controlling a doorphone 154 installed at a collective entrance are accommodated.

In each dwelling unit 111 such as a dormitory or condominium, a home adapter 1 serving as a terminal device of the private branch telephone exchange 100 is provided.
12 is provided, and this home adapter 112 is
Telephone interface circuit 11 of the private branch exchange 100
It is connected to 0. Further, the home adapter 112 is connected with a home unit 115 that detects abnormalities in the dwelling unit by various sensors 114 such as a fire sensor and notifies the home adapter 112 of these abnormalities, and a general analog two-wire telephone 113. ing.

A camera 150 is installed at the gathering entrance, and the camera 150 is connected to the video control device 151. The video control device 151 uses the video signal from the camera 150 via the video signal line 153 to connect the dwell units 111.
It is to be distributed and sent to the home adapter 112 inside.

In addition, a manager's room 140 such as a dormitory or condominium
Is equipped with a multi-function telephone 121 for displaying the state of each dwelling unit 111 and for notifying when it is young. When the home unit 115 in each dwelling unit 111 detects an abnormality, the home adapter 112 and the private branch exchange 100 are connected. It is configured to notify the multi-function telephone 121 of this via the.

FIG. 2 is a diagram showing an outline of a case where the telephone exchange system shown in FIG. 1 is installed in an apartment house such as a dormitory or condominium.

In FIG. 2, an entrance machine composed of an intercom 154, a camera 150, and an image control device 151 is installed at a collective entrance 200 of an apartment house 2 such as a dormitory or condominium. Line 155 is connected to private branch exchange 100. Also, camera 1
A video signal line 153 for transmitting a video signal obtained from the video control device 151 through the video control device 151 is connected to the home unit 115 of each dwelling unit 111. Further, a call line (subscriber line) from the private branch exchange 100 is connected to the home adapter 112 of each dwelling unit 111. A multi-functional telephone 121 is installed in the manager's room 140.

FIG. 3 shows the home adapter 112 shown in FIG.
3 is a block diagram showing the internal configuration of FIG.

In FIG. 3, terminals LIN-A and LIN-
B is a terminal connected to the telephone interface circuit 110, and a DC cut capacitor C1 is provided between these terminals.
And an incoming detection circuit a04 are connected in series.
The incoming call detection circuit a04 is the telephone interface circuit 110.
A call signal sent from the device (for example, AC 75V, 1
6 Hz continuous signal) is detected.

Further, a relay contact dtr is connected to each of the terminals LIN-A and LIN-B, and the telephone interface circuit 110 supplies between the lines after the break side contact of the relay contact dtr. A polarity reversal detection circuit a05 for detecting the polarity reversal of the power supply and a call detection circuit a06 for detecting the call state of the line are connected. Further, a relay contact ch is connected to the line in the latter stage of the polarity reversal detection circuit a05 and the call detection circuit a06, and the break side contact of this relay contact ch is the terminals TEL-A and TEL that connect the telephone 113. −
B is connected to the home side of the home unit 1.
It is connected to terminals HU-A and HU-B connecting 15 to each other.

Terminal L of make-side contact of relay contact dtr
A direct current loop line a09 for opening or closing the terminals is connected between IN-A and LIN-B, and terminals LIN-A and LIN-B are provided for DC cutting at a stage subsequent to the loop circuit a09. It is connected to the primary winding of the transformer T via a capacitor C2. A relay contact pb is connected to both ends of the secondary winding of the transformer T.
A PB signal receiving circuit a07 for receiving a PB signal is connected to the break side contact of b, and a PB generating circuit a08 for sending a PB signal is connected to the contact of the break side.

A home unit interface circuit a10 for transmitting and receiving control information to and from a home unit for monitoring and controlling the security of the dwelling unit is connected to the control bus a11. In the home adapter 112, a control signal from the private branch exchange 100 ( The PB signal) is analyzed, and the control information corresponding thereto is notified to the home unit 115 via the terminal HU-cont.
It has a function of converting the control information from 15 into a corresponding control signal (PB signal) and notifying it to the private branch exchange 100.

The home adapter 112 has a microprocessor a00, and the microprocessor a00 controls the entire home adapter 112.

In addition to the home unit interface circuit a10, the microprocessor a00 stores a fixed storage device a02 in which a control program and the like are stored, and temporary data and a data table generated when the control program is executed. Temporary storage device a01 and relay DT
R, a relay driver a03 for driving the relay PB and relay CH, and PB signal receiving circuit a07, PB signal generating circuit a08 is connected via the control bus a 11.
As a result, the relay driver a03, the PB signal receiving circuit a07, and the PB signal generating circuit a08 operate under the control of the microprocessor a00. Further, the output signals from the incoming call detection circuit a04, the polarity reversal detection circuit a05, and the call detection circuit a06 are fetched by the microprocessor a00, and the microprocessor a00 performs processing according to the detection result.

FIG. 4 shows the home unit 115 shown in FIG.
3 is a block diagram showing the internal configuration of FIG.

In FIG. 4, each dwelling unit has a gas sensor for detecting a gas leak, a fire sensor for detecting a fire, a water leak sensor for detecting a water leak in a kitchen or a bathroom, and whether or not there is a person in the dwelling unit. A sensor inside the dwelling unit, which detects whether or not the person is out, is provided, and further, a sensor control circuit b for reading information detected by each of these sensors 114.
05, a lamp control circuit b04 for controlling ON / OFF of a plurality of lamps (LEDs) for notifying an abnormality in the dwelling unit and other states, and a key / scan control circuit b03 for reading the pressed states of a plurality of input switches. It

Further, the home unit 115 is connected to the video interface circuit b07 which receives the video signal from the video signal line 153, and the monitor b08 which is connected to the video interface circuit b07 and displays (outputs the video) the video information. And a monitor control circuit b06 for performing on / off control of the monitor b08.

Further, the terminals HU-A, H of the home adapter
It has terminals HA-A and HA-B directly connected to UB, and these terminals HA-A and HA-B are connected to a speech circuit b13 that controls the input and output of voice signals. Call circuit b
13, a microphone b14, a speaker b15,
A message generation circuit b12 that outputs a message to that effect when an abnormality occurs is connected, and a voice (call) signal coming from the private branch exchange 100 to the call circuit b13 via the home adapter 112 is input to the microphone b14 and the speaker b15. To make a response (call), and to send a message from the message generation circuit b12 to the speaker b15.
It is configured to be output from.

Home adapter interface circuit b11
Is the home adapter 112 via the terminal HA-cont.
Is connected to the terminal HU-cont of and the control information from the home adapter is transmitted and received.

Further, the home unit 115 is a microprocessor b00 for controlling the entire home unit.
And a control bus b1 of this microprocessor b00
The 6, the fixed storage device b02 which control programs are stored, along with a temporary storage device b0 1 to store temporary data and tables produced on performing the control program is connected, the sensor control Circuit b05, lamp control circuit b04, key scan control circuit b03,
A monitor control circuit b06, a call circuit b13, a message generation circuit b12, and a home adapter interface circuit b11 are connected.

FIG. 5 is a sequence diagram showing transmission / reception of control signals between the home adapter 112 and the private branch exchange 100. Hereinafter, the normal operation of the diagnosis of the home adapter 112 will be described with reference to FIG.

First, when there is a request for home adapter diagnosis, the private branch exchange 100 uses the home adapter 112.
In order to activate, the telephone interface circuit 110 is controlled, the polarity of the power supply to the home adapter 112 is inverted (step 200), and the polarity inversion signal 220 is notified to the home adapter 112.

On the other hand, the home adapter 112 detects the reversal of the polarity, forms a loop to the private branch exchange 100 to notify the response signal 221, and prepares to receive the function selection signal (PB signal) (step). 210). The private branch exchange 100 monitors the response signal 221 after sending the polarity inversion signal 220, and when receiving the response signal 221, sends the home adapter diagnosis PB signal 222 to the home adapter 112 (step 201).

The home adapter 112 reads the PB signal, analyzes the received PB signal, and performs processing according to the function (step 211). In the diagnosis in step 211, after sending the PB signal 223 of the response signal, the loop is released and the disconnection signal 224 is sent. As a result, the private branch exchange 100 receives the reply signal 223, waits for the normal confirmation disconnection signal (step 202), then receives the disconnection signal 224, and ends the diagnosis.

Next, a method for detecting an abnormality in the home adapter 112 will be described.

In FIG. 5, the private branch exchange 100 is
When the time (230) for detecting the response signal 221 after transmitting the polarity inversion signal 220 exceeds a certain time t1,
Alternatively, when the time (231) for detecting the reply signal 223 after the private branch exchange 100 sends the home adapter diagnostic signal 222 exceeds a certain time t2, or the private branch exchange receives the reply signal 223. When the time (232) from the reception of the disconnection signal 224 to the predetermined time t3 exceeds the home time of the home adapter 112,
Is abnormal.

FIG. 6 shows a configuration example of a control data memory area stored in the storage device 103 for diagnosing the home adapter 112.

In FIG. 6, reference numeral 300 represents the overall structure of the control data. Time to start diagnosis (24 hour system from 0 to 23:00) 301 in one day, time to end diagnosis ( (0 to 23:00, 24-hour system) 302, diagnosis cycle (1 hour unit), and home adapter 1 during diagnosis
Diagnosing home adapter data 304 showing 12 identifications
Composed of.

FIG. 7 shows the relationship between the diagnosis start time 301, the diagnosis end time 302, and the activation cycle 303 by a number line with the horizontal axis representing time.

Next, the time of diagnosis will be described with reference to FIG.

For example, if the diagnosis start time 301 is set to 1 o'clock, the diagnosis end time 302 is set to 6 o'clock, and the start cycle 303 is set to 2 hours, the diagnosis is started when the current time becomes the diagnosis start time 1 o'clock.

When the diagnosis is started, first, one home adapter 112 is searched from among the plurality of home adapters 112, and the home adapter data 304 under diagnosis is set to identify which home adapter 112 it is. Perform the series of diagnostics shown. When this diagnosis process is completed, the in-diagnosis home adapter data 304 is changed to the next home adapter 112, and the same process is executed.

The above processing is performed for all the home adapters 112, and when all the processing is completed, one diagnosis is completed. The time to perform the next diagnosis is 3 o'clock (X1: 401), which is the time when the diagnosis was started at 1 o'clock and the start cycle 303 (2 hours) was added, and when the current time becomes 3 o'clock, new diagnosis is started. To be done.

Similarly, the activation cycle 303 (2 hours) at 3 o'clock
The diagnosis is also started at 5 o'clock (X2: 402) when the above is added.
At this time, if the diagnosis of all the home adapters 112 is not completed within 2 hours (startup period 303), it is 3:00 (X
The process of 1: 401) is not performed, and the diagnosis is performed at 5:00 (X2: 402). Further, at the diagnosis end time 302 (6:00), the diagnosis process is forcibly ended.

As described above, the diagnosis can be performed any number of times in any time zone.

FIG. 8 shows an example of the structure of data stored in the storage device 103 of the private branch exchange 100 for managing the state of each extension.

In FIG. 8, reference numeral 500 is a memory area of data for managing the state of the extension. The extension state management data 500 is composed of n blocks in order to manage n extension states, with one block of information of various data corresponding to each accommodation position. This extension state management data is provided with a bit for identifying whether it is in check-in or check-out, and it is determined by this bit whether or not the extension at the accommodation position is in check-in.

FIG. 9 shows a diagnostic processing procedure in the private branch exchange 100.

In step 601, it is monitored whether or not the present time is the diagnosis request time. If the current time is the diagnosis start time, the process proceeds to step 602, and it is determined whether the check-in is in progress by the check-in bit of the accommodation position of the extension state management data 500. If you are checking in, step 603
Then, the procedure goes to step S3, and the home adapter 112 is diagnosed.

At the next step 604, diagnosis is performed on one home adapter 112. After a series of diagnosis,
The process proceeds to step 605 to search for the next home adapter. If there is, the process returns to step 602. If not, the process proceeds to step 606 to set the next diagnostic request time.

10 to 14 are state transition diagrams showing the diagnostic process of step 604 in FIG.

FIG. 10 is a state diagram in which the home adapter 112 connected to the private branch exchange 100 is empty.
When the diagnosis occurs in step 603 in FIG. 9, the private branch exchange 100 sends the polarity inversion signal 220 to the home adapter 112 and further sends the diagnostic signal 222, so that the private branch exchange 100 operates the PB signal receiving trunk 130. It is captured and transits to the state shown in FIG.

FIG. 11 is a state diagram in which the private branch exchange 100 waits for reception of the response signal 221 from the home adapter 112. In FIG. 11, when the private branch exchange 100 receives the response signal 221 from the home adapter 112, it transmits a diagnostic signal 222 to the home adapter 112,
Transition to the state of FIG. Here, the private branch exchange 10
0 is the response signal 22 during t1 after the state shown in FIG.
If 1 is not received, the timeout t1 is activated and the home adapter 112 recognizes that it is abnormal.

FIG. 12 is a state diagram in which the private branch exchange 100 is transmitting the diagnostic signal 222 to the home adapter 112. When the private branch exchange 100 finishes transmitting the diagnostic signal 222, the home adapter 112 starts preparing for transmitting the disconnect signal 224 following the reply signal 223, and transits to the state of FIG.

FIG. 13 is a state diagram in which the home adapter 112 is transmitting the reply signal 223 to the private branch exchange 100. When the private branch exchange 100 receives the reply signal 223, it transits to the state of FIG. Here, the private branch exchange 100 recognizes that the home adapter 112 is abnormal when the timeout t2 is activated unless the reply signal 223 is received during t2 after the state of FIG.

FIG. 14 is a state diagram in which the private branch exchange 100 waits for reception of the disconnection signal 224 from the home adapter 112. When the private branch exchange 100 receives the disconnect signal 224, the diagnosis ends. Here, the private branch exchange 1
00 is a disconnection signal 2 during t3 after the state shown in FIG.
If 24 is not received, the timeout t3 is activated and the home adapter 112 recognizes that it is abnormal. Also, when the disconnection signal 224 is received from the home adapter 112, it becomes the empty state.

FIG. 15 shows an example of the board of the function buttons and the display of the multi-function telephone 121 installed in the manager's room 140.

In FIG. 15, reference numeral 1200 is a layout of the function buttons and the display panel, and 1201 is a function button portion provided on the multi-function telephone 121. In the function button portion 1201, check-in registration, The function button assigned to the checkout registration and the abnormality notification of the home adapter 112 is 1202. A visible lamp 1203 is provided corresponding to the function button 1202 and displays the status of the function. Reference numeral 1204 is a display device for displaying each information such as the telephone number of the other party.

Next, a case where the administrator room 140 performs check-in and check-out registration for each dwelling unit will be described.

The extension state management data 500 is obtained by pressing the function button 1202 assigned to check-in / check-out registration from the multi-functional telephone 121 set in the manager's room 140 and dialing the extension number of the unit to be registered. The check-in bit of the corresponding accommodation position of is set / reset, and the registration is completed.

FIG. 16 shows an example of the structure of the management data of various necessary information stored in the storage device 103 in the private branch exchange 100 when an emergency call occurs.

In FIG. 16, reference numeral 1300 is a memory area of emergency call history management data for recording an emergency call that has occurred. In order to record necessary information such as the location of the emergency call and the date and time of the emergency call, and to manage the history of the emergency call, n
It is composed of blocks.

FIG. 17 shows that when an emergency call occurs,
In order to manage the administrator room 140 to be notified, the storage device 1
A configuration example of the control data stored in 03 is shown.

In FIG. 17, reference numeral 1400 denotes an administrator room 1 which the central control unit 102 calls when an emergency call is made.
Multifunctional telephone 1 for determining and notifying 40 groups
21 is a memory area of management data for managing 21. This management data memory area 1400 is configured by m blocks for managing m emergency call reception extension groups, with n emergency call notification extensions as one block 1401.

Next, a case will be described in which the home adapter 112 is recognized as abnormal from FIG. 18 and an emergency call is made to the multifunction telephone to notify.

First, in step 1501, when the private branch exchange 100 recognizes an abnormality in the home adapter 112, the process proceeds to step 1502. Step 150
In 2, the abnormality information is registered in the emergency call history management data 1300 and the process proceeds to step 1503. Step 150
In 3, the manager room 14 according to the point where the emergency call occurred
0 group for emergency call reception extension group management data 1
Search from 400.

In the next step 1404, the function button 12 assigned to the home adapter 112 abnormally is given to the multifunction telephone 121 extracted as the emergency call notification extension.
The visible lamp 1203 of No. 02 is blinked, and at the same time, the ringer is sounded to read out the necessary items to be displayed on the display 1204 from the emergency call history management data 1300 to notify the emergency readout.

At this time, if the multi-function telephone 121 to be notified cannot be connected due to busy or the like, only the visible lamp blinks to notify that there is an emergency call. Next, in step 1505, it is determined by checking the control data whether or not all the multifunction telephones 121 in the registered emergency call reception extension group have been notified based on the control data of the emergency call reception extension group management data 1400. To do. If it is determined that the notification is ended, the notification control is ended. If the notification is not completed, step 150
Return to step 3 and execute notification control.

[0073]

As described above, according to the present invention, the operation of confirming the normality of the home adapter having a plurality of functions accommodated in the private branch exchange can be periodically performed from the private branch exchange side. . Therefore, for example, the normality of the home adapter can be diagnosed during a time period when the home adapter is rarely used.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a telephone exchange system to which a home adapter diagnosis method according to the present invention is applied.

FIG. 2 is a diagram showing an outline of a case where the telephone exchange system shown in FIG. 1 is installed in an apartment house.

FIG. 3 is a block diagram showing an internal configuration of the home adapter shown in FIG.

FIG. 4 is a block diagram showing an internal configuration of the home unit shown in FIG.

FIG. 5 is a sequence diagram showing a diagnostic operation of the home adapter in the present embodiment.

FIG. 6 is a configuration diagram of data for managing necessary information for diagnosis according to the present embodiment.

FIG. 7 is a diagram illustrating a diagnosis start time in the present embodiment.

FIG. 8 is a configuration diagram of data for managing a check-in registration state for each extension in the present embodiment.

FIG. 9 is a flowchart showing a diagnostic processing procedure in this embodiment.

FIG. 10 is a state transition diagram of diagnosis in the present embodiment.

FIG. 11 is a state transition diagram of diagnosis in the present embodiment.

FIG. 12 is a state transition diagram of diagnosis in the present embodiment.

FIG. 13 is a state transition diagram of diagnosis in the present embodiment.

FIG. 14 is a state transition diagram of diagnosis in the present embodiment.

FIG. 15 is a schematic explanatory diagram of a board surface and a display unit of the multi-function telephone according to the present embodiment.

FIG. 16 is a configuration diagram of data for managing necessary information regarding an emergency call according to the present embodiment.

FIG. 17 is a configuration diagram of data for managing a group configuration of multi-function telephones to be notified when an emergency call is made in the present embodiment.

FIG. 18 is a flowchart showing a call processing procedure when an abnormality is notified by diagnosis in the present embodiment.

[Explanation of symbols]

100 private branch exchange 101 channel switch 102 central control unit 103 storage unit 110 telephone interface circuit 111 dwelling units 112 home adapter 113 telephone 114 various sensors 115 home unit 120 the enhanced phone interface off Esu circuit 121 the enhanced phone 130 PB signal receiving trunk 131 PB signal transmission trunk 140 Management room

(72) Inventor Shuji Okawa 4-6 Kanda Surugadai, Chiyoda-ku, Tokyo Hitachi, Ltd. 56) References JP-A-2-205167 (JP, A) JP-A-4-241563 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04M 11 / 00-11 / 10 H04Q 3/58

Claims (4)

(57) [Claims] 1. A home adapter having a plurality of home adapters installed in each dwelling unit of a condominium or the like for controlling a plurality of functions and a private branch exchange for accommodating the respective home adapters via a two-wire analog interface. A diagnostic method, in the case of diagnosing the home adapter, a first means for activating the home adapter by sending a polarity inversion signal from the private branch exchange to the home adapter, and for activating the home adapter. Along with this, second means for transmitting a diagnostic signal for confirming normality from the private branch exchange to the home adapter by receiving a response signal from the home adapter, and the home by receiving and analyzing the diagnostic signal Third, after transmitting a response signal from the adapter to the private branch exchange, and then transmitting a disconnection signal And means, home adapter diagnostic method, characterized in that to check the normality of the home adapter by receiving the reply signal and the cutting signal in the private branch telephone exchange. 2. The home adapter diagnosing method according to claim 1, wherein the private branch exchange performs a diagnostic operation on a plurality of the home adapters an arbitrary number of times in an arbitrary time period. 3. A accommodated in the private branch telephone exchange, the ho
Check-in registration and check for system adapter
2. The home adapter diagnosis system according to claim 1, further comprising a multi-function telephone having a registration unit for performing out registration, and performing diagnosis only for the home adapter that is checked in and registered by the registration unit . 4. The private branch exchange, when an abnormality occurs in the home adapter, notifies the abnormal state by a visible lamp, a ring, and a display of the multi-function telephone. Home adapter diagnostic method.