JPH0131839B2 - - 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]

In general, key telephone devices are equipped with an automatic incoming call answering function that answers an incoming call simply by going off-hook, making it possible to omit the selection of the incoming line using the office line button or extension button. If an automatic incoming call answering function is provided for both incoming calls from the central office line and incoming calls from extension lines, if calls are received from both parties at the same time, a functional conflict will occur and the control situation will be confused.

Therefore, in the past, the automatic incoming call answering function was provided only for either the central office line or the extension line, and it required button operations for the other, making the operation difficult. This resulted in some troublesome drawbacks.

[Summary of the invention]

The present invention has an object of fundamentally eliminating such drawbacks of the conventional technology, and includes a storage means for storing the incoming call state of the telephone, and a storage means for storing the incoming call state of the telephone after off-hook based on the contents of the storage means. comprising a determining means for determining whether or not it is a call, and a controlling means for setting the off-hook telephone to an extension capture state, regardless of whether or not there is an incoming call from a central office line, according to the determination result of the determining means, The present invention provides an extremely effective key telephone device that realizes automatic responses to incoming calls from central office lines and extensions by giving priority to automatic responses to extensions.

[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.
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 Kt, a contact di for dial pulse sending, and a contact ds ¹ for a bypass. , a 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}
It is designed to be connected to each telephone line by a separate communication line.

In addition, an incoming call detection circuit RDT is connected between the disconnector Kt and the contact di to detect a calling signal from the central office line, and a DP sending circuit.
DPS 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. The hold tone sending circuit HTS sends hold tones such as melodies generated by HTG to the central office line via contact h, and for contact ds ² , dial back tone sending circuit DBS and dial back A tone generation circuit DSG is provided, and a dialback tone transmission circuit DBS transmits the dialback tone generated by the circuit DBG to the telephone set ST which is in a calling state via a contact ^ds2 .

On the other hand, processors such as microprocessors
A control unit CNTm consisting of a CPU and a memory MM is provided to receive the detection power of the incoming call detection circuit RDT, and also to receive the detection power of the incoming call detection circuit RDT through signal lines 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 with the telephones ST ₁ to ST ₁₆ , receives operation data from the telephones ST ₁ to _{ST 16} , makes control decisions based on these, and sends the DP sending circuit DPS and hold music. Sending circuit HTS, driver DR ₁ that drives each relay XP corresponding to contact xp, contacts f ₁ to f ₅ that individually connect telephones ST ₁ to ST ₅ to central office lines CO ₁ to CO ₅ during a commercial power outage. Driver DR ₂ that drives _the corresponding relays F ₁ to _{F 5} , extension dial tone, extension busy _tone , waiting tone,
In addition to _controlling the tone generation circuit TSG, which sends out
~ _ST16 , control data is sent.

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 sequentially stores the status of central office lines CO ₁ to _{CO 5} , the status of telephones ST ₁ to _{ST 16} , and the status of extension links described below. The above-mentioned judgment and control are performed while the processor CPU checks the information.

In addition, extension links iTCM ₁ to iTCH 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 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 If the relays L ₁ - _{L 5} are operated by the loop current from the lines CO ₁ - _{CO 5} , then based on the output of the contacts L ₁ - _{L 5} when a power outage occurs, these and the corresponding relays F ₁ - F ₅ 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, during off-hook, the communication line Lt is connected to the amplifier A via the switch HS ¹ , capacitor Cs, varistor VR, transformer Ts, and switch circuit SW ₁ , and the switch circuit SW ₁ is turned on. , and when amplifier A is activated, the speaker is activated by various tone signals or audio signals sent from the communication line Lt.
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 are connected in parallel, and when contact AC is turned on by the operation of relay AC, a DC loop is closed while off-hook, making it possible to monitor off-hook dialing, etc.

In addition, an oscillator circuit OSC is provided that generates station line ringtone, extension tone ringtone, extension voice call notice tone, hold alarm tone, doorphone ringtone, etc., and the output of this is sent to amplifier A via switch circuit _SW2 . is given, switch circuit SW ₂ is turned on, and
When the amplifier A is activated, the speaker SP is made to sound using the various tone signals described 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 PBO and function key FUK and the switch HS ² is sent out as operation data, and according to the received control data, the generation signal specification of the oscillation circuit OSC, the operation of the relay AC, 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 Ls by the power supply circuit omitted in Figure 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 is a single monitor ribbon, a single recall button for redialing, a single transfer button for transferring 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 by the processor CPU of the main unit KSU, 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 by
Performs "daytime/nighttime switching processing" that allows connection of CO ₁ to CO ₅ .

Next, if the other party does not respond even if the calling state continues for, say, 30 seconds using the timer in the processor CPU, the "extension timeout process" such as canceling the calling state is performed, and the incoming call from the door phone DRP is processed. If there is, a corresponding control is performed using "door phone incoming call processing", and the "received data processing" and subsequent steps are repeated.

In FIG. 3B, interrupt processing is performed at a cycle of 16.5 m sec, and the above-mentioned "daytime/nighttime switching processing" detection is performed using "TNGHT", and then
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
Transmission and reception of data signals with the telephones ST ₁ to _{ST 16} is performed simultaneously 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.
In “TST”, this memory and processor CPU
Each data transfer between the two is performed.

FIG. 4 is a flowchart of automatic response control. When an incoming call is received on any telephone STn, when the telephone STn goes off-hook, the processor CPU responds to this and remains off-hook. Whether or not a reserved line is set on the telephone STn by operating the central office line button or extension button is stored in a variable memory using "Reserved line?"
Judgment is made based on the contents of RAM, and if this is YES, the telephone STn will be transferred to the reserved line by “line capture”.
After connecting, move on to "processing operation data from the next phone".

On the other hand, if "Is there a reserved line?" is NO, it will be determined "Is there an extension individual call?" according to the contents of the variable memory RAM, and if this is YES, the telephone STn will be linked to the extension that is receiving the call. Connect and enter the “extension call response” state.

Also, if "Is there an individual extension call?" is NO, it will be determined in the same manner as described above whether there is an incoming call on the central office line, and in response to YES, the telephone STn will be connected to the incoming central office line, and the answer will be "Incoming call on the central office line. Set to “response” state.

On the other hand, when a call is received from both the central office line and the extension line at the same time, the processor CPU in FIG.
Send extension lamp blinking data and central office line lamp blinking data. As a result, on the called side in Figure 2, the extension tone ringing tone is transmitted from the outgoing circuit OSC to the speaker.
A voice is emitted via the SP, and the extension lamp and the corresponding office line lamp on the display circuit LDP flash. Therefore, on the called side, an extension ringing tone and an extension lamp are used to notify an extension call, and a central office line lamp blinks to notify an incoming call.

Therefore, even if a call arrives from both the central office line and an extension line at the same time, unless a reserved line is set, the automatic answer to the extension line will be given priority.
Conflicts between automatic call answering functions for both the central office line and extension lines are avoided.

However, by operating the central office line button and then off-hooking, the automatic answering function is canceled, so even if calls are received from both parties at the same time, it is possible to respond to the central office line.

Note that if you select YES for "Is there a reserved line?", the reserved line has priority for outgoing calls regardless of whether it is a central office line or an extension, so at least extension calls will be busy, incoming calls will be blocked, and calls from the central office line and extension will be blocked. Duplicate calls will not occur. On the other hand, in the case of an incoming call from an outside line, the outside line ringtone sounds, but the reserved line is picked up by off-hook.

Further, incoming calls from a central office line only need to be answered by another telephone, whereas calls to individual extensions must be answered by the telephone itself, so it is reasonable to give priority to automatic incoming call responses to extensions.

FIG. 5 is a block diagram summarizing the configuration of the present invention. When there is an incoming call from the central office line CO ₁ or CO ₂ , the connection unit CN controls the selector SEL to generate a central office line ringing tone. Output of signal generator SG ₁ to phone
While sending to STa and STb, for example, the telephone STa
If the switch HS is turned on due to off-hook and an extension call is made to the telephone STb, the connecting part CN
controls the selector SEL and sends the output of the signal generator SG ₂ , which generates the extension ring tone, to the telephone STb.
Each STa and STb is stored in a variable memory RAM and a corresponding memory MEM.

In addition, the judgment unit JUD corresponding to the processor CPU
and a control unit CT, such as a telephone
Assuming that STb has received a call and has taken off-hook, the judgment unit JUD determines whether or not the incoming call to the telephone STb is an extension individual call based on the contents of the memory MEM. If the result is an extension individual call, the controller CT
controls the connection unit CN and puts the telephone set STb in an extension capture state regardless of whether there is an incoming call from the central office line.

Note that the same applies when the telephone STa enters the incoming call state.

However, 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 number of main unit KSU and telephones ST ₁ to _{ST 16} may be determined according to the conditions. It is also possible to use a common connection between
Each button on the phone ST ₁ to ST ₁₆ is non-locking,
In addition, the configurations shown in Figures 1 and 2 can be arbitrarily selected depending on the situation, and in Figures 3 and 4, 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 description, according to the present invention, it is possible to simultaneously provide an automatic incoming call answering function for a central office line and an extension line without causing functional conflict, and answering operations are simplified. A remarkable effect can be obtained in the button telephone device.

[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.
4 is a flowchart of the control situation by the processor of the main device, FIG. 4 is a flowchart of automatic response control, and FIG. 5 is a block diagram summarizing the configuration of the present invention. CO ₁ ~ CO ₅ ……Station line, ST ₁ ~ ST ₁₆ , STa, STb
...Telephone (button phone), xp...Contact, CPU
...Processor, MM, MEM...Memory, SRC
...Transmission control circuit, SRK, SRS...Transmission circuit,
KB...Keyboard, FUK...Function key, CNTs, CT...Control unit, JUD...Judgment unit,
HS...Switch switch, SG ₁ , SG ₂ ...Signal generator, SEL...Selector.

Claims (1)

[Claims] 1. In a button telephone device having an automatic answering function for answering incoming calls on outside lines and extensions only by off-hook, the key telephone device has a memory means for storing the incoming call state of the key telephone, and an off-hook is performed based on the contents of the memory means. A determining means for determining whether or not the incoming call state of the key telephone is an extension individual call, and a determining means for determining whether or not the incoming call state of the key telephone is an extension individual call; and a control means to
A button telephone device characterized by giving priority to automatic response to extensions.