JPH018060Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement of a button telephone device consisting of 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, in a button telephone device, a button telephone (hereinafter referred to as a telephone) is equipped with a monitor button and a DND (DO Not Disturb.) button for rejecting an extension call. The signal can now be monitored through the speaker, or dialing can be made while on-hook.
Depending on the operation of the DND button, a DND state is set in which incoming calls from other telephones or doorbells are rejected.

However, in the past, the monitor button and
Each device has a separate DND button, which increases the number of buttons on the operation surface, which hinders the miniaturization of the telephone and causes disadvantages such as easy operation errors.

[Summary of the idea]

The present invention aims to eliminate such drawbacks of the conventional technology at once, and includes a storage means that alternately and repeatedly stores the setting and release of the monitor mode in response to repeated operations of the monitor button on the telephone, and other devices. A control means is provided which checks the contents of the storage means in response to an extension call request from the key telephone, and if a monitor mode is set, prevents the extension call from being received to the key telephone. Extremely effective, dual-purpose
A button telephone device is provided.

[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 TEL _n via a disconnector K _t , as well as a contact di for sending dial pulses, and a contact for a bypass. ds ¹ is connected to the matrix circuit for exchange connection via contact h for sending hold tone and contact ds ² for sending dial back tone, and when contact xp is turned on, the relay for loop current detection is activated.
Via L ₁ ~ L ₂ or directly, phone ST ₁ ~ _{ST 16}
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, and is used to detect a calling signal from the central office line, as well as a DP sending circuit.
The 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. 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. It simultaneously transmits and receives data signals to and from the telephones ST ₁ to _{ST 16} via the wire, 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
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 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. 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 links 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 ₃ 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 the outputs of the contacts l ₁ - _{l 5} of the relays L ₁ - L 5 are given,
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 .

FIG. 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 L _t is connected to amplifier A via the switch HS ¹ , capacitor C ₂ , varistor VR, transformer Ts and switch circuit SW ₁ , and the switch circuit SW ₁ is turned on and amplifier A is in operation, the speaker SP is activated by various tone signals or voice signals sent from the telephone line _Lt.
It has become a sound.

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 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 PBD and function key FUK and the switch HS ² is sent 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.
After stabilization in PS, local power supply V to each part,
Supplied as Vcc and Vss.

In addition, the keyboard KB's function keys FUK include the number of station line buttons corresponding to the station lines CO ₁ to CO ₅ , a single hold button for placing station lines on hold, and a single hold button for monitoring with speaker SP and DND. A monitor button for redialing, a single recall button for redialing, a single transfer button for transferring calls after the central office line is put on hold, a single extension button for internal calls, etc. A circuit LDP indicator light is provided.

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, 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” is used to send and receive data between the telephones ST ₁ to _{ST 16} , and then “TiTCM” is used to transmit and receive data between the telephones
After sending the command data to make the speakers SP of ST ₁ to _{ST 16} intermittently ring with a tone signal and detecting the timeout for the above-mentioned "extension timeout processing", "TDR" is used to perform the above-mentioned " Door phone DRP used for “door phone 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 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.

Figures 4 and 5 show MON (monitor)/
This is a flowchart of DND control, and in Fig. 4, when the "monitor button operation" of any telephone ST _o is performed, the processor CPU selects "MON/DND mode setting?" according to the contents of the variable memory RAM. Judge, if this is NO,
This information is stored in the variable memory RAM by “MON/DND mode setting” and then “MON/DND display” is displayed.
turns on the monitor indicator light of the phone ST _o , and then turns on the phone ST _o according to the contents of the variable memory RAM.
If the answer is YES, set the telephone ST _o to relay “AC operation”, switch circuit “SW ₁ on”, and amplifier “A operation”, and then After performing "station line acquisition",
"My Line Display" causes the station line indicator light corresponding to the captured station line on the telephone ST _o to blink by repeating, for example, 15/8 seconds on and 1/8 seconds off, and the corresponding station line indicator light on other telephones. After lighting up continuously to display a "busy display", the process moves on to "processing operation data from the next telephone".

Also, if "MON/DND mode setting?" is YES, "MON/DND mode release" updates the contents of the variable memory RAM to the release state, and then
“Turn off the MON/DND display”.

Therefore, in response to repeated operations of the monitor button, the monitor mode and the DND mode are repeatedly set and canceled alternately.

In addition, setting the monitor mode according to the purpose of monitoring has a short setup time from an operational point of view, and has little effect on incoming calls.
When setting the mode, the other party is not connected, and the circuit configuration is only performed within the own phone, so there is no effect on others, and the same button is pressed.
There is no particular problem even if it is used for both MON and DND.

In FIG. 5, if any of the telephones ST _o is in the "off-hook" state, as in FIG. 4,
A decision is made as to “MON/DND mode setting?”
“MON/DND mode release” according to YES of this
Then, the "MON/DND display is turned off" and the process moves to "operation data processing from the next telephone".

Therefore, if the MON/DND mode is set, the MON/DND mode is automatically canceled by off-hook.

Figure 6 is a flowchart of on-hook dial control, and when the "office line button operation" is performed on any telephone ST _o , the determination of "MON/DND mode setting?" is made in the same way as in Figure 4. If this is YES, the relay “AC operation”, the switch circuit “SW ₁ on”, and the amplifier “A operation” are set in _the telephone ST o, and the telephone ST _o After the "my line display" of the telephone and the "busy display" of the other telephone are performed, the process moves to "operation data processing from the next telephone".

Therefore, on-hook dialing becomes possible after "acquiring the central office line."

FIG. 7 is a flowchart of extension call control. If you off-hook, operate the extension button, and dial a 2-digit number corresponding to the destination telephone number on any telephone ST _o , the state will be "extension call request". Depending on this, the processor CPU
performs “destination detection” and uses variable memory
Determines whether the destination is in MON/DND mode according to the contents of the RAM. If the answer is NO, the destination phone is sent an extension ring tone, and then the operation data processing from the next phone is performed. ”.

In response, “Is the destination in MON/DND mode?”
If YES, it will "send an extension busy tone" to the telephone ST _o , set a timer to release the "extension call request" state after 30 seconds, for example, and then issue a "shift call". Perform "enabled state setting".

Please note that shift calls must be made by dialing the phone ST ₁ in advance.
~ST ₁₆ is divided into multiple groups, and for each group, the destination is shifted from the first destination phone to the next phone in sequence. For example,
When phones numbered 11 to 14 are in a group, if number 11 is in MON/DND mode,
Dial "1" to enable a shift call, dial "2" to set number 12 as the destination, dial "3" to set number 13 as the destination, and dial "4" to set number 14 as the destination.

In addition, as shown in Figure 6, if you operate the central office line button while the MON/DND mode is set, you can perform on-hook dialing. , doorbell monitoring, etc., so there is no need to specifically cancel DND mode depending on the purpose of monitoring.

FIG. 8 is a block diagram summarizing the configuration of the present invention, and shows the monitor buttons of telephones ST _a and ST _b.
When SW _n is repeatedly operated, the variable memory RAM and the corresponding memory MEM alternately and repeatedly set and cancel the monitor mode and store it for each phone ST _a and ST _b . When the monitor mode is set in _a , turning on the hook switch HS with the off hook on the telephone ST _b , operating the extension button SW _i , and
A dial call is made using impulse contact D _i ,
When a request to make an extension call is made to the telephone ST _a , the processor CPU and the corresponding control unit CT check the contents of the memory MEM in response to the request, and control the connection part CN to prevent the extension call from being received to the telephone ST _a . It is becoming.

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,
Any lock type may be used, and Fig. 1 and 2
The structure of the diagram can be selected arbitrarily depending on the situation.
In FIGS. 3 to 7, various modifications can be made such as replacing the steps or omitting unnecessary steps depending on the conditions.

[Effect of idea]

As is clear from the above explanation, according to the present invention, the monitor mode and the DND mode can be selected alternately and repeatedly using a single monitor button, which reduces the number of buttons on the operating surface of the phone and reduces the size of the phone. In addition to this, it also prevents the occurrence of erroneous operations, and a great effect can be obtained in various key telephone devices.

[Brief explanation of the drawing]

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 Figures 4 and 5 are MON/DND.
FIG. 6 is a flowchart of on-hook dialing and control, FIG. 7 is a flowchart of extension control, and FIG. 8 is a block diagram summarizing the configuration of the present invention. CO ₁ ~ _{CO 5} ……Station line, ST ₁ ~ ST ₁₆ , ST _a , ST _b
...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, SW _n ...Monitor button, SW _i ...Extension button, HS...Full switch, D _i ...Impulse contact, CN...Connection Department.

Claims (1)

[Scope of utility model registration request] In a button telephone device that is capable of monitoring signals from a telephone line while on-hook by operating a monitor button on the button telephone, the monitor mode is alternately set and canceled in response to repeated operations of the monitor button. A storage means for repeatedly storing the information, and a control means for checking the contents of the storage means in response to an extension call request from another key telephone and, if the monitor mode is set, preventing the extension call from being received by the key telephone. What is claimed is a button telephone device, characterized in that it is provided with a monitor button and an extension call rejection button.