JPH0247919B2 - BOTANDENWASOCHI - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement in a button telephone device comprising a main device accommodating a central office line from a telephone office and a plurality of button telephones connected to the main device. It is.

[Prior art]

Generally, with the adoption of microprocessors in key telephone devices, data signals are sent and received at regular intervals between the main device and each button telephone (hereinafter referred to as telephone), and operation data from the telephone is transferred to the main device. While receiving the data, control data is transmitted from the main device to the telephone, thereby controlling the telephone according to its operation status and controlling in response to incoming calls from the central office line.

However, if an abnormality occurs in one of the telephones and the reception of operation data is in an error state, there is a risk that the overall operation will be disrupted. A patent application was filed in 1983 for a means to automatically prohibit the sending and receiving of
-125356 (Japanese Unexamined Patent Publication No. 58-27455).

However, when this method is used, it is impossible to automatically release the prohibited state in response to recovery from an abnormality, and a reset operation is required.In addition, for uninstalled telephones, uninstalled lines can be removed by a switch on the main device. Because specification is required, when installing new or expanding equipment,
Alternatively, it is necessary to operate a switch when attaching or detaching the telephone for maintenance, which is troublesome to operate and also causes disadvantages such as the possibility of erroneous operation.

[Summary of the Invention] The present invention has the purpose of fundamentally eliminating such drawbacks of the conventional technology, and includes continuous error detection means for detecting that an error has continuously occurred a predetermined number of times in data received from a telephone; A storage means for storing the abnormality registration of the telephone according to the detection power of the detection means, a reset means for resetting the operating state of the telephone according to the detection power, and a storage means for storing the abnormality registration of the telephone in accordance with the detection power, and a storage means for storing the abnormality registration of the telephone in accordance with the detection power. This device is equipped with a prohibition means for prohibiting transmission, and an erasing means for erasing the abnormality registration when the received data from the telephone that is registered as abnormal is normal. A highly effective key telephone device is provided for initiating the transmission and reception of data signals.

〔Example〕

Hereinafter, details of the present invention will be explained with reference to figures showing examples.

Figure 1 is a block diagram of the main unit KSU.
The office lines CO ₁ to _{CO 5} are accommodated, and as the office line CO ₁ is shown as a representative, it is connected to this telephone TELm via a disconnector K _t , a contact di for sending dial pulses, and a contact ds for a bypass. ¹ , contact h for sending out hold music, and
Via contact point DS ² for sending dial back tone,
It is connected to the matrix circuit for exchange connection,
Depending on the switching on of contact xp, the telephone _{ST 1 to}
Each is connected to ST ₁₆ by a separate telephone line.

In addition, an incoming call detection circuit RDT is connected between the disconnector Kt and the contact di, and is used to detect a calling signal from the central office line, as well as a DP sending circuit.
The DSP controls contacts di, ds ¹ , and ds ² to send dial pulses, and contact h is provided with a hold tone sending circuit HTS and a hold tone generating circuit HTG. On-hold music, such as a melody, generated by the circuit HTG is sent to the on-hold music sending circuit HTS.
is sent to the office line via contact h, and contact ds ² is equipped with a dial back tone sending circuit DBS and a dial back tone generating circuit DBG. The dialback tone sending circuit DBS sends the dialback tone to the telephone ST which is in the outgoing state via contact ^ds2 .

On the other hand, processors such as microprocessors
A control unit CNT _n consisting of a CPU and a memory MM is provided, and receives the detection power of the incoming call detection circuit RDT, and also receives signals connected to the transmission control circuit SRC, the transmission circuit SRK, and each of the telephones ST ₁ to ST ₁₆ individually. Simultaneously transmits and receives data signals to and from the telephones ST ₁ to _{ST 16} via the line, receives operation data from the telephones ST ₁ to ST ₁₆ , makes control decisions based on these, and then sends the data to the DP sending circuit DPS. , hold music sending circuit HTS, contact xp and corresponding relays XP
The driver DR ₁ drives the relays F ₁ - F ₅ corresponding to the contacts f ₁ - _{f 5} that connect the telephones ST ₁ - _{ST 5} individually to the central lines CO ₁ - _{CO 5} during a commercial power outage. Tone generation circuit that sends extension dial tone, extension busy tone, waiting tone, extension ring tone, etc. to driver DR ₂ and telephones ST ₁ to _{ST 16} .
It controls the TSG and the intercom control circuit DPC, and also sends control data to the telephones ST ₁ to ST ₁₆ .

Note that the memory MM consists of a fixed memory ROM and a variable memory RAM.The fixed memory ROM stores instructions, which are executed by the processor CPU and performs various judgments and controls. The RAM is divided into multiple areas, and each area has central lines CO ₁ to _{CO 5.}
, the status of the telephones ST ₁ to _{ST 16} , the status of the extension link described below, etc., are sequentially stored, and the processor CPU performs the above-mentioned judgment and control while checking the stored contents.

In addition, extension links iTCM ₁ to iTCM ₃ are provided, and the transformers T ₁ to _{T 3} capacitors C ₁ to _{C 3} and the power supply E circuit supply power for communication during extension calls. The doorbell DRP is connected via the doorbell control circuit DPC and the transformer T ₁ to the extension link iTCM ₁ and the answering telephone
By turning on the contact xp corresponding to ST,
A conversation is to be made with the telephone ST that responded.

In addition, the driver DR ₂ is given the outputs of the contacts l 1 - l ₅ of the relays L ₁ - L 5, and the outputs of the contacts l ₁ - _{l 5} of the relays L 1 - L ₅ are given, and
Even if a commercial power outage occurs while ST ₅ is talking to the office lines CO ₁ to _{CO 5} , the contacts xp corresponding to the office lines CO ₁ to _{CO 5} will remain on for, say, 20 minutes due to the backup power supply. If the relays L ₁ - _{L 5} are operating due to the loop current from the station lines CO ₁ - CO ₅ , then these and the corresponding relays F _{1 - L 5 will be activated based on the outputs of the contacts L 1 - L 5} when a power outage occurs. _F5 will not be restored immediately.

Note that the output of the switch board SWB is given to the processor CPU, and
A switch in the SWB allows settings such as restrictions on incoming and outgoing calls for the telephones ST ₁ to ST ₁₆ .

Figure 2 is a block diagram of the telephone set ST, in which the telephone line Lt is connected to the telephone circuit via the switch ^HS1.
In addition to being connected to TKC, when on-hook, a communication line Lt is connected to the amplifier A via the switch HS ¹ , the capacitor C _s , the varistor VR, the transformer T _s and the switch circuit SW ₁ , and the switch circuit SW ₁ is turned on and amplifier A is in operation, the speaker is activated by various tone signals or audio signals sent from the telephone line L _t .
The SP is now ringing.

Note that a resistor Rs is connected to the input side of the capacitor Cs.
A series circuit of AC and contact AC is connected in parallel, and when contact AC is turned on by the operation of relay AC, a DC loop is closed while the hook is on, making it possible to monitor when dialing on the hook.

In addition, an oscillator circuit OSC is provided that generates station line ring tone, extension tone ring tone, extension voice call notice tone, hold alarm tone, door phone ring tone, etc., and the output of this is sent to amplifier A via switch circuit _SW2 . When the switch circuit SW ₂ is turned on and the amplifier A is in operation, the speaker SP will be sounded by the various tone signals mentioned above.

On the other hand, a control unit CNTs consisting of a processor such as a microprocessor, memory, etc. is provided, and the main unit KSU is connected via a transmission circuit SRS and a signal line Ls.
By transmitting and receiving data signals with
The information from the keyboard KB with PBD and function key FUK and the switch SH ² is sent as operation data, and according to the received control data, the generation signal of the oscillation circuit OSC is specified, the operation of the relay AC, and the switch circuit SW ₁ ,
It controls the on/off status of SW ₂ , the operating state of amplifier A, and the blinking of the indicator light of the display circuit LDP.

Note that a DC power supply is superimposed on the signal line L _s by the power supply circuit omitted in Fig. 1, and the DC power supply separated by the transmission circuit SRS is connected to the power supply circuit PS.
After stabilizing at
Supplied as Vcc and Vss.

In addition, the keyboard KB's function keys FUK include the number of office line buttons corresponding to the office lines CO ₁ to CO ₅ , a single hold button to place the office line on hold, and the speaker SP for monitoring and rejecting incoming extension calls. There are a single monitor button, a single recall button for redialing, a single transfer button for transfer after holding the central office line, a single extension button for internal calls, etc. There is an indicator light for the display circuit LDP.

Fig. 3 is a flowchart of the control status of the main unit KSU by the processor CPU, where A shows normal processing, B shows interrupt processing, and A shows "initialization processing" when the power is turned on. After getting older, the operation data from each telephone ST ₁ to _{ST 16} is stored in the variable memory RAM, and "received data processing" is performed to make judgments and controls according to the data, and then the central office lines CO ₁ to CO ₅ are After checking the status of the switch board and storing this data in the variable memory RAM, as well as carrying out "station line processing" that performs judgment and control accordingly, the switch board SWB settings and the clock circuit in the processor CPU are performed. Based on the time measurement, a "daytime/nighttime switching process" is performed that allows the central office lines _CO1 to _CO5 to be connected only to specific telephones _ST1 to _ST16 at night.

Then, by the timer in the processor CPU,
If the other party does not respond even if the ringing state continues for, for example, 30 seconds, "extension timeout processing" such as canceling the ringing state is performed, and if there is an incoming call from the doorphone DRP, "doorphone incoming call processing" is performed. ”, control is performed accordingly, and the steps after “Received data processing” are repeated.

In FIG. 3B, interrupt processing is performed at a cycle of 16.5 msec, and detection for the above-mentioned "daytime/nighttime switching processing" is performed using "TNGHT", and
Depending on “TCO”, contact xp control, station line CO ₁ ~
Dial pulse sending control for CO ₅ , central office line
After detecting incoming calls from CO ₁ to CO ₅ ,
"TST" transmits and receives data to and from the telephones ST ₁ to _{ST 16} , and then "TiTCM" transmits command data for causing the speakers SP of the telephones ST ₁ to _{ST 16} to ring intermittently with a tone signal, and After performing the timeout detection for the above-mentioned "extension timeout processing", "TDR" is used to detect the doorphone DRP used for the above-mentioned "doorphone incoming call processing".
Even if the incoming call from ST 1 is detected and the call from the doorbell DRP continues for up to 30 seconds, the phone ST ₁
~ If ST ₁₆ does not respond, timeout detection is performed to release the calling state.

In addition, transmission control circuit SRC and transmission circuit SRK
The transmission and reception of data signals with the telephones ST ₁ to _{ST 16} is carried out all at once at a cycle of 66 msec, and the control data and operation data are temporarily stored in the memory in the transmission control circuit SRC, which consists of a microprocessor, memory, etc. It has become,
In “TST”, this memory and processor CPU
Each data transfer between the two is performed.

Figure 4 is a flowchart of transmission control by the processor in the transmission control circuit SRC, in which the transmission circuit SRK is controlled to perform "transmission" and "reception", and a parity check is performed to check for errors in the received data. Yes?”, and if it is YES, it performs “error counting”, and if the error occurs continuously a predetermined number of times, “count value = 16?” is YES.
If so, "error data creation/memory storage" is performed, whereas if "error occurred?" is NO, "count value clear" is performed and then "received data/memory storage" is performed. At the time of storing the received data in the memory, abnormality registration, which will be described later, is also erased.

Therefore, if an error occurs consecutively for a predetermined number of 16 times in any of the operation data from the telephones ST ₁ to _{ST 16} , the error data will be stored in the memory accordingly, and the continuous error will be detected. It will be done.

Next, the processor asked, “Is there a specification from the CPU?”
If the chip select indicates YES, it is determined whether a request for received data has been made from the processor CPU using “Receive data request?”, and this indicates YES.
If so, “receive data transfer” transfers the received data or error data in memory to the processor.
The data is sent to the CPU and then the memory is cleared, whereas if "receive data request?" is NO, the control data is transferred from the processor CPU by "send data transfer" and stored in the memory. , “Is there a specification from the CPU?” and the subsequent steps are repeated.

Also, when "Specified by CPU?" is NO, the timer in the transmission control circuit SRC determines "Start transmission?", and if this is YES, the transition will be to "send" and "receive", but if it is NO, If so, repeat the steps after “Is there a specification from the CPU?”

Figure 5 shows the processor that responds to error detection.
This is a flowchart showing CPU reset control. When "error data transfer/reception" is performed, it is stored in the variable memory _RAM and "abnormality registration" is performed. ”, ”Public line on hold?”, ”Purchased extension?”, ”Incoming extension call?”, and “Missed call forwarding status?” are sequentially determined according to the contents of the variable memory RAM. According to YES, "Call to central office line is disconnected/Release of the central office line", "Call on hold/Release of the central office line", "List of extension is disconnected/Release of the central line", "Call incoming extension is disconnected", "Releases call forwarding status"
After that, the process moves on to "processing operation data from the next telephone."

Therefore, all operating states regarding the telephone ST _o are reset.

FIG. 6 is a flowchart of the extension call control by the processor CPU when an extension call is made from another telephone ST _{n .} It enters the "extension call request" state, and in response to this, it determines "is the destination registered abnormally?" based on the contents of the variable memory RAM. If the destination is the telephone ST _o , the determination result is YES, so the telephone ST _n In addition to "sending busy tone" to the telephone, "setting the shift call enabled state" enables shift calls to other telephones in the same group as the predetermined telephone ST _o , and then "Next". Processing of operation data from the telephone.

On the other hand, if the destination is other than the phone ST _o ,
“Destination registered abnormally?” is NO and “Extension call”
transition to state.

Note that even if the phone ST _o is not installed, errors are detected and "abnormality registration" is performed, so
Treated in the same way as above.

In addition, the "extension call request" is processed as shown in Figure 6, and specific control data (data that accesses only the handset that is registered as abnormal, such as extension call reception data, central office line transfer data, etc.) is processed as shown in Figure 6 _. However, data other than the above-mentioned specific control data, such as incoming calls from central office lines and doorbell calls, is now normally sent to data telephones ST _o . If the operation data is transmitted from the telephone ST _o and is received normally, "error data creation/memory storage" is not performed in Fig. 4, and accordingly, the
Since the “abnormal registration” shown in the figure is deleted, the phone ST _o
Data signal transmission and reception to and from the device automatically resumes.

Therefore, in the device of this embodiment, transmission of specific data to a malfunctioning telephone or a non-equipped telephone is automatically prohibited, as explained with reference to FIG. Note that Figure 6 is an example of an extension call request, but since the specific data is data that accesses only telephones that have been registered as abnormal, it is necessary to access only telephones that have also been registered as abnormal, such as when transferring to a central office line. Similarly, transmission of specific data is automatically prohibited.

In addition, prohibiting the transmission of specific control data is because a telephone that has registered an abnormality is not guaranteed to be able to perform processing (for example, displaying a call) using control data sent only to itself, and other telephones have no way of knowing this.
This is due to the reason that processing cannot be done on your behalf. On the other hand, there is no problem even if data other than the above that is targeted at all phones is sent to the phone that is registering the error and is not processed.If the error is resolved by resetting, the response operation in response to it will cause no problem. This will trigger deletion of abnormal registration.

In this way, if the transmission of specific control data to a malfunctioning telephone or a non-implemented telephone is automatically prohibited, the overall operation will not be disrupted, and the transmission of specific control data to a malfunctioning telephone or a non-implemented telephone will not be disrupted. Transmission and reception of normal data signals to and from the telephone automatically starts in response to normal operation data from the telephone, and it is possible to omit a reset operation by a switch, an operation for specifying a non-mounted telephone, and the like.

FIG. 7 is a block diagram summarizing the configuration of the present invention, showing the processor CPU and corresponding control section.
CT, reset section RES, erase section IRS, inhibition section INH,
A memory MEM corresponding to the variable memory RAM, a transmission section SR corresponding to the transmission control circuit SRC and a transmission circuit SRK, and a continuous error detection section CED are provided, and the control section CT controls the connection section CN, and the telephone ST ₁ to
While performing exchange connections between ST ₁₆ and between these and central office lines CO ₁ to CO ₅ , the transmission unit SR controls the transmission unit SR and sends and receives data signals to and from the telephones ST ₁ to _{ST 16} . When error detection is performed in the received data, the continuous error detection unit CED detects continuous errors a predetermined number of times in response to this,
This detection power is stored in the memory MEM to memorize the abnormality registration, and the reset unit RES
The system also provides detection power to the telephone, and resets the replacement operation for telephones in which continuous errors have occurred by using the output of the reset section RES.

Also, depending on the contents of the memory MEM, the prohibited part INH
controls the transmission unit SR and prohibits the transmission of specific data to telephones that have experienced continuous errors.

Furthermore, when the transmission unit SR detects that the received data from the phone that caused the continuous error is now normal, the erasing unit IRS erases the abnormality registration in the memory MEM accordingly, so the above-mentioned state is automatically restored. It will be canceled in

However, the output of the memory MEM is reset by the reset section RES.
The same applies to the case where the connection part CN is reset after abnormality registration.

In addition, in FIG. 1, the number of central office lines CO ₁ to _{CO 5} and the number of telephones ST ₁ to _{ST 16} may be determined depending on the conditions, and the main unit KSU and telephones ST ₁ to ST ₁₆ may be A common connection may be made between
Each button on the phone ST ₁ to ST ₁₆ is non-locking,
In addition, the configurations in Figures 1 and 2 can be arbitrarily selected depending on the situation, and in Figures 3 to 6, the steps may be replaced or unnecessary depending on the conditions. Various modifications are possible, such as the possibility of omitting this step.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, the transmission of specific data to a non-implemented telephone is prohibited without the switch or the like specifying the non-implemented telephone, and the same applies to a malfunctioning telephone. In addition, normal data transmission is automatically resumed in response to recovery from an error or implementation without the need for switch operations such as resetting or changing specifications, making handling, maintenance, and inspection easier. A remarkable effect is obtained in telephone equipment.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Figure 1 is a block diagram of the main device, Figure 2 is a block diagram of a telephone, and Figure 3 is a block diagram of a telephone.
The figure is a flowchart of the control status by the processor of the main device, and Figure 4 is a flowchart of transmission control.
FIG. 5 is a flowchart of reset control, FIG. 6 is a flowchart of extension control, and FIG. 7 is a block diagram summarizing the configuration of the present invention. CO ₁ to CO ₅ ...Station line, ST ₁ to ST ₁₆ ... Telephone (button telephone), xp ... Contact, CPU ... Processor, MM, MEM ... Memory, SRC ... Transmission control circuit, SRK, SRS ...transmission circuit, KB...keyboard, FUK...function key, CNT _s ,
CT...control section, SR...transmission section, CED...continuous error detection section, RES...reset section, INH...inhibition section, IRS...erasure section, CN...connection section.

Claims (1)

[Scope of Claims] 1. In a key telephone device that transmits and receives control data signals between a main device and a key telephone at regular intervals, it is detected that an error has continuously occurred a predetermined number of times in data received from the key telephone. continuous error detection means for detecting a fault, storage means for storing an abnormality registration of the key telephone according to the detection power of the detection means, and reset means for resetting the operating state of the key telephone according to the detection power. , a prohibiting means for prohibiting transmission of specific control data to the button telephone set in the abnormality registration, and an erasing means for erasing the abnormality registration when the received data from the button telephone set in the abnormality registration is normal. Features a button telephone device.