JPS6410994B2 - - 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, key telephone devices are equipped with an extension camp-on function or a busy call function, and when the called telephone is busy, a waiting tone is sent to the calling telephone to indicate that it is on standby. , when the called telephone ends the call, an extension individual tone paging signal is automatically sent to the called telephone, and a ring back tone is sent to the calling telephone instead of the waiting tone. There is.

In addition, in the case of a busy call, even if the called telephone is busy, an extension individual tone paging signal is sent to it, and a ring back tone is sent to the calling telephone, so that the called telephone This state is connected from the time the call ends to the time the call is answered.

However, conventionally, in the case of extension camp-on, even if the called telephone has ended the call, the waiting tone simply switches to the ringback tone, making it difficult to confirm that the called telephone has ended the call. In the case of a busy call, the ring back tone continues even when the called phone is in the call end state, so it is impossible to confirm that the called phone is out of the call state, and the calling phone There are many cases where people give up on making a call because they are waiting for a response from the called telephone.

[Summary of the invention]

The present invention has the purpose of fundamentally solving such conventional problems, and if an extension individual voice call state is used,
Focusing on the fact that the sending of tone signals to the calling telephone is stopped and the telephone becomes silent, in response to an extension individual call request for which the key telephone that is seizing the line is the called telephone, the calling telephone is notified of the ringing and A button telephone device that transmits a tone signal indicating whether the telephone is on standby includes a detection means for detecting an on-hook state of the called telephone, and a detection means that stops transmitting the tone signal according to the detecting power of the detection means and detects whether the called telephone is on-hook or not. An extremely effective button telephone device is provided with a control means for forming a voice calling circuit between the telephone and the calling telephone, and automatically shifts to an extension individual voice call in response to the called telephone being on-hook. This is what we provide.

〔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, and depending on _{the ON of} contact It is designed to be connected by a communication 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 DPS controls the contacts di, ds ¹ and ds ² and sends out dial pulses, and the contact h is provided with a hold tone sending circuit, HTS, and a hold tone generating circuit HTG. A circuit that sends out held music such as melodies generated by the same circuit HTG.
HTS is configured to send out 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 dial back tone generated by the dial back tone is sent by the dial back tone sending circuit DBS to the telephone set ST which is in the calling state via the contact point ^ds2 .

On the other hand, processors such as microprocessors
A control unit CNTm consisting of a CPU and a memory MM is provided, and receives the detection output of the incoming call detection circuit RDT, and also receives signal lines connected to the transmission control circuit SRC, the transmission circuit SRK, and each of the telephones ST ₁ to ST ₁₆ individually. It 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, Hold music sending circuit HTS, contacts XP and corresponding relays XP
A driver DR ₁ drives the contacts f 1 to f 5 and corresponding relays _{F 1} to _{F 5} that connect the telephones ST ₁ to _{ST 5} individually to the central office lines CO ₁ to _{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 door phone 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 telephones ST ₁ to ST ₁₆ , and the status of extension links described below, etc., are successively stored, and the processor CPU checks these stored contents to perform the above-mentioned judgment and control. .

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, the telephone 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 if amplifier A is in operation, the speaker will be 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 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 a central office line ring tone, an extension tone ring tone, an extension voice call notice tone, a non-attendance alarm tone, a door phone ring tone, etc., and the output of this circuit is sent to the amplifier A via the switch circuit _SW2 . , the 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 PBD and function key FUK and the switch HS ² is sent as operation data, and in accordance with the received control data, the generation signal specification of the oscillation circuit OSC, the operation of the relay AC, and the switch circuit SW ₁ are performed. ，
It controls the on/off 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 current separated by the transmission circuit SRS is transferred to the power supply circuit.
After stabilization in PS, local power supply V to each part,
Supplied as Vcc and Vss.

In addition, the keyboard KB's function keys FUNK 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 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 performing "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 clock, 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 30 seconds, the "extension timeout process" such as canceling the ringing state is performed, and if there is an incoming call from the doorphone DRP, "doorphone call incoming 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 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" performs data transmission/reception signals with telephones ST ₁ to _{ST 16} , and then "TiTCM" transmits command data to make the speakers SP of telephones ST ₁ to _{ST 16} continuously ring with tone signals, and After performing the timeout detection for the above-mentioned "extension timeout processing", "TDR" is used to detect the doorphone used for the above-mentioned "incoming call processing".
Even if the incoming call from DRP is detected and the call from the doorbell DRP continues for 30 seconds, the phone
If ST ₁ to ST ₁₆ do not respond, timeout detection is performed to release the call 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 carried out all at once at a cycle of 66 msec, and the control data and operation data are stored all at once in the memory within the transmission control circuit SRC.
In “TST”, this memory and processor PU
Each data transfer between the two is performed.

FIG. 4 is a flowchart of extension call control. When you operate the off-hook and extension buttons on any calling telephone STn and then dial the number of the called telephone STm, an "extension call request" is issued. The processor CPU determines "Is the other party busy?" according to the contents of the variable memory RAM, and if this is YES, determines "Does the callee have a hold line?" according to the contents of the variable memory RAM. Moreover, when this is YES, it is an "extension call request" that requires transfer, and an immediate response from telephone STm is required. At the same time, a ring back tone is sent to the calling telephone STn, and the telephone STm determines whether the call is on a local line based on the contents of the variable memory RAM. If YES, the extension indicator light is not lit.
After flashing this to display an "extension incoming call", a "timer set" for use in the "extension timeout process" shown in FIG.

Also, if "Do you have a hold line?" is NO, set "Extension camp on mode setting",
Sends a waiting tone to the telephone STn, and sends a waiting tone for example 1 sec to the telephone STm.
After transmitting a camp-on tone only during
If YES, "extension incoming call display" is performed.

For the above, if “Is the other party busy?” is NO,
Depending on the contents of the variable memory RAM, it is determined whether the other party is off-hook or a monitor. If the answer is YES, it is assumed that the exchange is in a transient state before the line is captured, so it is treated as impossible to connect to the exchange, and the telephone STn is notified of an extension call. In addition to performing "midtone transmission", "shift call enable state setting" is performed.

On the other hand, “Is the other person off-foot or on monitor?”
If NO, the telephone will be called by “extension individual call”.
After sending an extension individual tone call signal to STm or setting the extension individual voice call status, "extension incoming call display" is performed as described above.

FIG. 5 is a flowchart of response control,
If the opponent is on the hook, the processor CPU
determines “camp on mode setting?” according to the contents of the variable memory RAM, and if this is YES,
After stopping the transmission of waiting tones by "stopping the camp-on state" and forming a voice calling circuit between telephones STn and STm by "setting the extension voice transmission state", "processing the operation data from the next telephone" ”.

Also, if "camp on mode setting?" is NO, "extension individual tone ringing?" is selected as above.
If this is YES, the system will stop transmitting the extension individual tone ringing signal and the ringback tone by "stopping the extension individual tone ringing state", and then
Move to “Extension voice call status setting”.

FIG. 6 is a flowchart of extension call control showing another embodiment, and similarly to FIG. 4, the telephone STn
is in the “extension call request” state, the variable memory
Based on the contents of the RAM, the processor CPU determines ``Has the other party acquired the extension?'' If the telephone STm has acquired the extension link, the determination result is YES, and as in Figure 4, ``Does the own station have a hold line?'' After determining this, if YES is selected, “extension individual tone ringing” will be performed.
After doing this, a ``timer set'' for ``extension timeout processing'' is performed, and then the process moves to ``processing operation data from the next telephone.''

Also, if "Do you have a station line on hold?" is NO, "extension camp on mode setting" is performed, and then "timer setting" is performed.

On the other hand, if "Did the other party acquire the extension?" is NO, it determines "Did the other party acquire the central office line?" according to the contents of the variable memory RAM, and if this is YES, "call the extension individual tone" and "timer set". After doing so, perform the "extension incoming call display".

In response to the above, if "Did the other party have access to the central office line?" is NO, it is determined "Is the other party off-hook or on monitor?" as in Fig. ``Medium tone transmission'', ``shift call availability status setting'', and ``timer setting'' are performed, but if the answer to ``Is the other party off-hook or monitor?'' is answered, the process immediately shifts to ``extension individual calling.''

Therefore, in FIG. 4, the telephone STm
If the telephone STm is busy, whether the call destination is a central office line or an extension, the call will change to a busy call by either an extension camp-on or an "individual extension tone ring."In Fig. 6, the telephone STm Only when the extension is being captured, the call will change to a busy call assuming that the telephone STn is on hold, but if the telephone STn is not on hold, the call will be switched to extension camp-on, and the telephone STm will be able to capture the central line. If the call is in progress, the call will go to busy regardless of the condition of the telephone STn, and in any case, the "extension voice call status setting" will be performed as shown in Figure 5 in response to the on-hook of the telephone STm. .

However, sending the camp-on tone can be optionally omitted depending on the conditions, and in FIG. It may also be a time constraint.

FIG. 7 is a block diagram summarizing the configuration of the present invention, in which the exchange section EX corresponding to the processor CPU and matrix circuit of _FIG .
CO ₅ and the communication lines of the telephones ST ₁ to ST ₁₆ are accommodated, and the detection unit OHD and control unit CT corresponding to the processor CPU contain the communication lines of the telephones ST ₁ to _{ST 16.}
Output wires from the switch HS ² and the telephone
A telephone that accommodates the control line for the switch circuit SW ₁ of ST ₁ to _{ST 16} and that is capturing either the extension link within the exchange EX or the central office line CO ₁ to CO ₅ .
When STm becomes the called telephone, the detection unit OHD detects the on-hook of the telephone STm, and the control unit CT responds based on this detection power, and the control unit CT controls the tone generation circuit TSG. and stops sending the tone signal to the calling telephone STn, and also stops the switch circuit of the telephone STm.
Controls SW ₁ and exchange EX, and connects the telephone STn and
After forming a voice call circuit with STm, the voice from the telephone STn via the switch _HS1 is amplified by an amplifier A, and then the speaker SP is driven.

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 according to the situation, and in Figures 3 to 6, steps may be replaced or unnecessary depending on the conditions. Various modifications are possible, such as the possibility of omitting steps.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, when the called telephone that is seizing the line goes on-hook in response to the end of the call, it automatically shifts to the extension individual voice calling state and sends a tone signal to the calling telephone. Since the call is stopped, it becomes easy for the calling telephone to confirm that the called telephone has terminated the call, and a remarkable effect can be obtained in various key telephone devices.

[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 situation by the processor of the main device, Figure 4 is a flowchart of extension call control, Figure 5 is a flowchart of response control, and Figure 6 is a flowchart of extension call control showing another embodiment. , 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...Memory, SRC...Transmission control circuit,
SRK, SRS...Transmission circuit, KB...Keyboard,
FUK……Function key, CNTs, CT……
Control section, EX...Exchange section, TSG...Tone generation circuit, OHD...Detection section, HS ¹ , HS ² ...Hook switch, TKC...Talking circuit, SW ₁ ...Switch circuit, A...Amplifier, SP ...Speaker.

Claims (1)

[Claims] 1. In a button telephone device that transmits a tone signal indicating either ringing or standby to a calling telephone in response to an extension individual calling request in which a button telephone that is seizing a line is the called telephone, the called telephone a detection means for detecting on-hook of the detection means; and a control means for stopping the transmission of the tone signal and forming a voice calling circuit between the called telephone and the calling telephone according to the detection power of the detection means. established,
A key telephone device characterized in that the telephone automatically transitions to an extension individual voice call in response to an on-hook of the called telephone.