JPH0450712Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a button telephone device that enables dialing from a central office to a central office line while on-hook.

[Prior art]

In a button telephone device consisting of a main device that accommodates a central office line from a telephone office and a plurality of key telephones (hereinafter referred to as telephones), there is an on-hook system that allows dialing to the central office line even when the telephone is on-hook. A hook-dial system is generally used, making dialing operations simple.

[The problem that the idea aims to solve]

In the above-mentioned conventional button telephone device, when performing on-hook dialing, after operating the central office line key of the telephone, the monitor key etc. must be operated before dialing, which reduces the number of keys required on the operation panel. As the number of devices increases, the operating procedures become more complicated, resulting in disadvantages such as errors in operation and increased time required for operation.

[Means to solve the problem]

In order to solve such problems, the button telephone device of the present invention includes a first detecting means for detecting the operation of the office line key provided on the telephone, and a second detecting means for detecting the hook state based on the handset of the telephone. a detection means, a memory for storing the state of the central office line, and a first
control means for capturing a designated office line in an on-hook dial mode based on the content of the corresponding office line stored in the memory and the on-hook detection output of the second detection means when the detection output of the second detection means occurs; It is equipped with the following.

[Effect]

When the operation of the central office line key is detected by the first detection means, the central office line is on-hook based on the contents of the central office line stored in the memory and the on-hook detection output detected by the second detection means. Captured in dial mode. As a result, in the on-hook state, it is possible to make an on-hook dial call simply by operating the open line key.

〔Example〕

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

Figure 1 is a block diagram showing the configuration, and the main device
The ME is provided with line terminals L ₁ and L ₂ to which the central office line from the telephone office is connected and accommodated, while one pair each is connected between the main device ME and the plurality of telephones TEL ₁ to TELn. The relay L of the main device ME and the relay TK of the telephones TEL ₁ to TELn are normally operated, and the contact l ¹
The telephone line LT is connected to the secondary winding of the transformer Tm by ~l ² , and the telephone power supply VB is supplied through the circuit of the resistor R _B and the capacitor C _B , but the contact tk
Even if the line between the telephone line and the telephone circuit TKC is cut, and the switch HS ¹ is turned on by the on-hook, the telephone circuit TKC will not be connected to the telephone line LT unless the relay TK is restored.

In addition, the main device ME and telephones TEL ₁ to TELn have
Control circuits CTm and CTt consisting of a microprocessor, memory, etc. are provided, and the transmitter/receiver circuit
It sends and receives data via SRm, SRt and signal line LS, exchanging information between each other, and also controls other parts based on information from other parts, and control circuits CTm and CTt. The device is designed to operate under controlled conditions.

Here, if there is an incoming call from the central office line, the incoming call detection circuit RDT using a photocoupler detects the ringing signal via the DC blocking capacitor C _R ,
In order to provide this information to the control circuit CTm, the control circuit CTm starts the oscillator OSCm in response to this,
Sends the station line ring tone to the telephone line LT via the transformer Tm, transmits control data via the signal line LS, restores the relays TK of telephones TEL ₁ to TELn, and operates the relay SP at the same time. ,and,
Turn on amplifier A and turn on the key/display circuit.
By blinking the KDP office line indicator light, the office line ringing tone via contacts sp ¹ , sp ² , tk and transformer Tt is amplified by amplifier A and given to speaker SPK, which rings to alert the office line. The incoming call is notified by the blinking of the office line indicator light.

In response, for example, the telephone TEL ₁ responds,
When you operate the central line key of the key/display circuit KDP along with the off-hook, this information is transferred to the key/display circuit.
Control circuit from KDP and switch HS ²
CTt, control circuit via signal line LS
Since it is sent to CTm as operation data, control circuit CTm restores relay L in response to this,
The telephone line LT is connected to the central office line by contacts l ¹ and l ² as central office line connection means, while all telephones TEL ₁
~ Send control data for TELn, restore these relays SP, and connect the communication circuit TKC to the communication line.
At the same time as disconnecting from the LT, the station line indicator light is turned on, thereby indicating that a call to the station line is in progress.

In the telephone TEL ₁ , the telephone circuit TKC is connected to the telephone line LT by the turned on switch ^HS1 and the contact tk which is being restored, and a telephone conversation with the central office line is performed.

In addition, when performing a hold transfer, operate the hold key on the key/display circuit KDP and specify the transfer destination using the pushbutton dial PD. This operation data is given to the control circuit CTm, and the The same circuit CTm operates relay HL, turns on the contact hl of the hold circuit HLD, and closes the hold resistor.
R _L closes the hold loop and the phone
Sends control data to TEL ₁ to TELn, flashes the office line indicator light, sends control data to the forwarding destination phone, operates relay SP, restores relay TK, and , turns on amplifier A, operates relay L, and activates oscillator OSCm, so that the speaker SPK of the telephone at the transfer destination rings with the central office line ring tone.

When the transfer destination telephone goes off-hook in response to this, a call is made between the extensions, and if the central office line key is then operated, a call is made to the central office line in the same manner as described above, while the operation data of the central office line key is is the control circuit
The holding loop is released because the circuit CTm restores the relay HL.

When the call ends and on-hook is performed, this operation data is given to the control circuit CTm, and in response, the circuit CTm operates the relay L to open the central office line and send signals to the telephones TEL ₁ to TELn. transmits control data, operates relay TK, and turns off the station line indicator light to enter standby mode.

Then, for example, when oscillating from telephone TEL ₁ to the central office line, when the off-hook and central office line keys are operated on telephone TEL ₁ , these operation data are given to the control circuit CTm, and the circuit is activated accordingly. CTm restores relay L,
While connecting the telephone line LT to the central office line,
Send control data to TEL ₁ and relay TK
and connects the communication circuit TKC to the communication line LT, transmits control data to all telephones TEL ₁ to TELn, and lights up their office line indicator lights.

Therefore, a display indicating that the office line is in use is displayed, the telephone call circuit TKC is connected to the office line, and the dial pulse generating circuit DPG operates in response to the operation of the pushbutton dial PD. Since the switch is turned on and off, dialing to the central office line can be made freely, and the call is completed when the other party responds.

In addition, if on-husk is performed due to the end of the episode,
The standby state is entered in the same way as above, and hold transfer is also performed in the same manner as above, but when making a call, if the central office line key is operated before going on-hook, the operation data of the central office line key will be transferred to the control circuit CTm even in the on-hook state. In response to this, relay L is restored, control data is sent to telephone TEL ₁ , relay SP is operated and relay TK is restored, and the contact point as a dial connection means is detected.
Turn on tk and sp ¹ , and use the telephone circuit TKC including the dialing switch as the dialing circuit.
Since it connects to LT, on-hook dialing is possible.

In addition, when you operate the push button dial PD,
As a result, the control circuit CTt responds and the transmitting circuit
In order to activate OSC _t and turn on amplifier A, an operation sound is sent from speaker SPK.

In addition, for inter-extension calls, e.g.
With off-hook at TEL ₁ , telephone TEL ₂
When a dial operation is performed to specify , the operation data is given to the control circuit CTm, and in response, the circuit CTm operates the oscillator OSCm for a certain period of time and sends control data to the telephones TEL ₁ and TEL ₂ . Then, in addition to restoring the relay TK of both parties, the relay SP of the telephone TEL ₂ was activated, and
In order to turn on amplifier A, the extension incoming warning sound is sent from the speaker SPK of telephone TEL ₂ for a certain period of time, and then the ringing sound from telephone TEL ₁ is output to the telephone.
Sent from TEL ₂ speaker SPK.

If telephone TEL ₂ answers by off-hook,
According to the operation data of this, control circuit CTm transmits control data to telephone TEL ₂ , and relay SP
In order to restore the communication status, the two parties enter a conversation state, and if an on-hook is performed due to the end of the call, the control circuit CTm sends control data to both parties according to the operation data, operates relay TK, and goes into standby state. shall be.

In addition, if there is an incoming call from the door phone DP, the control circuit CTm detects this via the door phone control circuit DPC, starts the oscillator OSCm, and transmits control data to the telephones TEL ₁ to TELn.
In order to restore the relay TK, operate the relay SP, and turn on the amplifier, a doorbell ring tone is sent from the speaker SPK. If any telephone goes off-hook in response to this, the operation data of this Control circuit CTm is oscillation circuit OSCm
stops and controls the door phone control circuit DPC, connects the door phone DP to the primary winding of the transformer Tm, transmits control data, and restores the relay SP while leaving the relay TK of the off-hook telephone in the recovery state. By turning off the amplifier A and putting the other telephones into standby mode, a call is made between the door phone DP and the off-hook telephone, and when the telephone goes on-hook, the entire system returns to the standby state in the same way as described above. Become.

Please note that the doorbell is not activated during a call to the central office or extension line.
If there is an incoming call from the DP, or if there is an incoming call from the central office line during a call between extensions, the control circuit
CTm sends control data to start the oscillator OSCt and turn on amplifier A, so the speaker
The SPK is designed to send out a doorbell ringtone during a call or a central office line ringtone during an extension call.

FIG. 2 is a flowchart of a call operation to a central office line based on the control of the control circuit CTm. For example, when the central office line key "LK operation" of telephone TEL ₁ in an on-hook state is performed, the operation data of this is transmitted to the central office line by the control circuit CTm. When the station line is received, it is checked against the contents of the memory to determine whether the station line is idle or not. Processing to respond to incoming calls, on hold, etc., or disabling "LK operation" assuming a call is in progress, but if the judgment result is Y (YES), relay "L recovery" is performed. Then, each control data is sent sequentially to the telephone TEL ₁ , and the relay “TK recovery” and relay “SP
After turning on the amplifier "A on" and making it possible to make a dial call captured on the central office line, transmit control data to the telephones TEL ₁ to TELn,
Each station line indicator light is turned on.

Then, it is configured in the control circuit CTm.
"Timer start" is performed for a timer with a set time such as 30 seconds, operation data indicating off-hook of telephone TEL ₁ is received, and if "Off-hook?" is Y, control data is sent to telephone TEL ₁ . , relay “SP recovery”, amplifier “A”
"off" and "timer stop"
After the call has ended, operation data indicating on-hook is received from the telephone TEL ₁ , and when "On-hook?" becomes Y, the relay "L operation" is performed and the telephone TEL ₁ is After transmitting control data to the telephones to perform the relay "TK operation", transmit control data to the telephones TEL ₁ to TELn, turning off each "office line indicator light", and opening the office line. and transitions to standby state.

In addition, when the "off hook?" after "timer start" is N, the central office line key is operated again.
If the central line key “LK operation?” becomes Y, the relay “SP recovery” and amplifier “A off” are activated as described above.
is carried out, the relay moves to “L operation” and later, and the station line is opened. However, if the station line key “LK operation?” is N and “Timer time up?” is Y, the relay “ Immediately move on to "SP Recovery" and release the central office line.

Therefore, the central office line can be acquired only by operating the central office line key, and dialing can be made even in the on-hook state, making the on-hook dialing operation simple and easy.

In addition, if you do not go off-hook and operate the station line key again while the station line is captured by operating the station line key, the station line will be automatically released when the timer times up and the station line will remain in the station line capture state. This will be prevented.

However, in Figure 1, each telephone TEL ₁ ~
TELn and the main device ME may be connected by individual communication lines and signal lines, and the same is true even if multiple office lines are accommodated in the main device ME, and instead of the dial pulse generation circuit DPG. Various modifications are possible, such as providing a dial signal generation circuit and sending out a dial signal using a composite frequency.

[Effect of idea]

As is clear from the above explanation, according to the present invention, on-hook dialing is possible only by operating the central office line key, and the operating surface of the telephone has at least the central office line key, hold key, dial, and central office line indicator light. Since it is sufficient to provide only a limited number of buttons, it is possible to prevent erroneous operations from occurring, reduce the time required for operation, and achieve remarkable effects in various key telephone devices.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, FIG. 1 is a block diagram showing the configuration, and FIG. 2 is a flowchart of the calling operation for the central office line. ME...Main device, TEL ₁ ~ TELn...Telephone (button phone), L ₁ , L ₂ ...Line terminal, LT...Talking line, LS...Signal line, CTm, CTt...Control circuit, SRm, SRt……Transmission/reception circuit, L, TK, SP…
…Relay, KDP…key/display circuit, PD…push button dial, DPG…dial pulse generation circuit.

Claims (1)

[Scope of utility model registration request] In a button telephone device equipped with an on-hook dialing mode that captures a central office line by a specific operation of a button telephone in an on-hook state and enables dialing while in an on-hook state, an operation of a central office line key provided on the button telephone is detected. a first detection means for detecting a hook state based on a handset of the key telephone;
A memory for storing the state of a central office line, and specification based on the content of the relevant central office line stored in the memory when the detection output of the first detection means occurs and the on-hook detection output of the second detection means. 1. A button telephone device, comprising: a control means for capturing a vacant office line in the on-hook dial mode, and is capable of making an on-hook dial call only by operating an empty office line key in an on-hook state.