JPS59158191A - Key telephone set - Google Patents

Abstract

PURPOSE:To eliminate the need to arrange and operate a monitor key, etc., to facilitate on-hook dialing operation and eliminate misoperation, and to shorten a necessary operation time by connecting a trunk line acquisition dial originating circuit with the trunk line by the operation of only a trunk line key in an on- hook state. CONSTITUTION:When a talk ends and the on-hook operation is performed, the operation data is supplied to a control circuit CTm, control data is transmitted to telephone sets TEL1-TELn to operate a relay TK, and trunk line pilot lamp is extinguished to enter a standby state. When the trunk line key is operated for origination before the off-hook operation, the operation data on the trunk line key is detected by the control circuit CTm even in the on-hook state to restore a relay L and transmit the control data to the telephone set TEL1; and a relay SP is operated and the realy TK is restored to make contacts tk and sp<1> as a dial connecting means. Then, a talking circuit TKC including switches for dialing is connected as a dial originating circuit to a channel LT, so the on- hook dialing is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a button telephone device that allows dialing from a telephone 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), an on-hook system that allows dialing to the central office line even when the telephone is on-hook is used. The dialing method is generally adopted and makes dialing operations simple. Conventionally, when performing on-hook dialing, you must first operate the monitor key etc. after operating the office line key on the telephone. This requires dialing, which increases the number of keys required on the operation panel, complicates the operating procedure, and causes disadvantages such as erroneous operations and increased time required for operation.

[Summary of the invention]

The present invention has an object of fundamentally solving the drawbacks of the conventional system, and in an on-hook state, by operating only the office line key, a central office line is captured and a dialing circuit is connected to the central office line, and a monitor key, etc. [Example] Hereinafter, the present invention will be explained with reference to the drawings showing the example. Detailed explanation.

FIG. 1 is a block diagram showing the configuration. The main device ME is provided with line terminals Ll and L2, to which the central office line from the telephone office is connected and accommodated. Devices L and N are connected by one pair of communication lines LT and one pair of signal lines LS, and normally the main device M
The relay L of the telephone TgLt and the relay TK of the telephone TgLt to position n are activated, and the contact 11.12 is connected to the secondary winding of the transformer LT, and the resistor RB and the capacitor C are connected.
Although the telephone power supply VF3 is supplied through the circuit B, even if the line between the telephone line and the telephone circuit TKO is cut by the contact tk and the hook switch HS l is turned on by the on-footer, the relay TK is not activated. Call circuit T unless restored.
It is assumed that KC is not connected to the communication line LT.

The main device ME and the telephone devices L to N also include control circuits CTm and CT consisting of a microprocessor, memory, etc.
It transmits and receives data via the transmitter/receiver circuits SRm and SRt and the signal line LS, exchanges information between them, and controls other parts based on information from other parts. , control circuit CTm,C
The device operates under the control of Tt.

In this case, if there is an incoming call from the office line, the incoming call detection circuit RDT using a photocoupler detects the ringing signal via the DC blocking capacitor CR and provides this information to the control circuit CTm. In response to h, the control circuit CTm turns on the oscillator O8Cm, sends out a telephone ring tone to the telephone line LT via the transformer Trn, and transmits control data via the signal line LS, thereby transmitting the control data to the telephone line LT. PlacenIJ)suL/
-At the same time as TK is restored, relay SP is activated, amplifier A is turned on, and key display circuit K is activated.
By flashing the DPO office line indicator light, the signal is given to the contact, which instantly announces an incoming call from the office line, and the blinking of the office 1C indicator light indicates an M call. It will be done.

For example, telephone '1'E1. If you respond with ``1'' and operate the central line key on the key/display circuit KDP while going off-hook, this information? It is given to the control circuit C'f't from the key/display circuit Kl)P and the hook switch H82, and is transmitted as data to the control circuit CTm via the signal LS. ]Control circuit C
'll'm restores the relay L and connects the telephone line LT using contacts 1.l and 12 as the station line connection means, while controlling the city-wide clogging meter ~ T E L I+. The data is transmitted, these relays SI) are used to disconnect the telephone line TKC from the telephone line LT, and the station line indicator light is turned on to indicate that a call is in progress with the station line. do.

In addition, in L;5 episode 1・d i," E Ll,
The telephone circuit TKO is connected to the telephone line LT from the contact #kK of the hook switch H81g which was on and is currently being restored.
A call is made to the central office line.

In addition, when performing pending transfer, the key/display circuit KDP
When the hold key is operated and the transfer destination is specified on the pushbutton dial PD, the operation data is transferred to the control circuit C.
Tm, and in response, the same circuit CTm
L is activated, the contact hl of the hold circuit HL D is turned on, the hold loop is closed by the hold resistor RL, and control data is transmitted to the telephone fed position l - position n, and the central office line is displayed. After turning on the light and activating it, it sends control data to the transfer destination telephone, operates relay SP, restores relay TK, and turns on amplifier A, while operating relay L. , and oscillator O8Cm
to activate the speaker SP on the destination phone.
K rings as a central office line ring tone.

When the transfer destination box 5 goes off-hook in response to ChK, a call is made between extensions, and if the central office line key is then operated, a call with the central office line is performed in the same manner as described above, while the central line key operation The data is given to the control circuit CTm, which restores relay 1 (L), thereby opening the holding loop.

When the call ends and on-hook is performed, this operation take is given to the control circuit CTm, and in response, the circuit CTm operates the relay L to open the central office line, and at the same time,
Control data is transmitted to the telephones (TEL 1 to N), the relay TK is operated, and the office line indicator lamp is turned off to be in a standby state.

Next, for example, when making a call to the central office line from the telephone device l, when the central office key is operated along with off-hook on the six-phone machine, these operation data are given to the control circuit CTm, and the control circuit CTm responds accordingly. Then, the same circuit CTm restores relay L and connects the 6-way line LT to the office line, while transmitting a control take to 'Tun-a-T8Ll and restores the relay TK. At the same time, connect the telephone circuit TKC to the telephone iLT, and also connect the telephone circuit TKC to the telephone iLT. 'E
Control data is transmitted to L t to T E L n, and these station line indicator lights are turned on.

Therefore, an indication that the office line is in use is displayed, and the communication circuit TKO is connected to the office line, and the push button dial l)
In response to the operation of D, the dial pulse generation circuit DPG operates and turns on the dial switch in the telephone call circuit TKC.
Since the telephone is turned off, dialing to the central office line can be made freely, and the call is completed when the other party responds.

Note that if on-hook is performed due to ending the call, the call will go into standby mode as described above, and transfer on hold will also be performed in the same manner as above. Even if there is, the operation data of the office line key is detected by the control circuit CTm, and in response to this, the relay L is restored and the control data is transmitted to the electric circulation device i, and the operation of the relay SP and the relay TK are
contact point tk as a dial connection means.
lsI)' is turned on and the call circuit TKC including the dialing switch is connected to the call edge LT as a dialing circuit, so on-hook dialing becomes possible.

In addition, when the pushbutton dial PD is operated, the control circuit CTt responds to start the oscillation circuit 08Ct and turn on the amplifier A, so the speaker SP
An operation sound is sent from K.

Further, for mutual communication between extensions, for example, when the telephone device L goes off-hook and a touch operation is performed by touching the telephone device 2, the operation data is given to the control circuit CTm, and the circuit CTm is activated accordingly. While operating the oscillator O8Cm for a certain period of time, transmitting control data to the phone +91 and station z, restoring the relay TK of both, and operating the relay SP of the telephone 1'EL2, and
In order to turn on the amplification 5A, the speaker 5P of the telephone device 2
After the extension call warning sound is sent out for a certain period of time from I(), the ringing sound from the telephone set is sent out from the speaker 8PK of telephone device Z.

When the telephone device 2 responds by going off-hook, the control circuit CTm transmits control data to the telephone device 2 according to its operation data, and in order to restore the relay SP, the two parties enter a communication state, and the call is terminated. On-hook was made N
For example, in response to the operation data, the control circuit CTm transmits control data to both of them, and operates the relay TK to put it in a standby state.

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,
At the same time as starting the oscillator O8Cm, the telephone device 1-TBL
In order to transmit control data to n and cause it to restore relay TK, operate relay SP, and turn on the amplifier, speaker SPK sends out a doorbell ring tone, and in response to this, G) one of the telephones When off-hook, the control circuit CTm turns on the oscillation circuit O according to its operation data.
8Cm and controls the doorphone control circuit DPC, and connects the doorphone DP to the primary winding of the transformer Tm, while transmitting control data and keeping the relay TK of the off-hook telephone set in the recovery state, relay SP is switched on. By restoring and turning off amplifier A, and putting the telephone into standby mode, a call is made between the doorphone I)P and the off-hook telephone. It will return to the standby state.

Furthermore, if a call is received from the door phone DP while a call is being made to a central office line or an extension, or if a call is received from a central office line while a call is being made between extensions, the control circuit will send control data and the oscillator will Since osct is activated and amplifier A is turned on, the speaker SPK outputs a doorbell ringing tone during a call or an extension +Wf1 ringtone during a call.

FIG. 2 is a flowchart of the transmission operation for the central office line based on the control of the control circuit CTm.
When the BLx central line key ``LK operation'' is performed and the operation data is received by the control circuit CTm, it is determined that the BLx is in a standby state by comparing it with the contents of the memory.
If this is N (No), move to "other processing" and perform processing corresponding to incoming calls from the central office line, on hold, etc., and disable "LK operation" that assumes the call is busy. However, if the judgment result is Y (YES), the relay "L recovery" is performed, and each control data is transmitted to the telephone installation IK at the 11th order, and the relay "TK recovery" and the relay "SP operation" are executed. , the amplifier ``A is turned on'' to establish a state in which dialing can be made by capturing the office line, and then control data is transmitted to the telephone metering device n, and each one-game win indicator light is turned on.

Next, a "timer start" command is sent to the timer configured in the control circuit CTm, which has a set time such as type 30.
If the operation data indicating off-hook is received and "Off-hook?" is Y, the telephone is not connected.
Send control data to l, relay "SP recovery",
The amplifier is turned off, the timer is stopped, and the call status is established. When the call ends, operation data indicating on-hook is received from the telephone meter, and when the "on-hook?" becomes Y, the relay is activated. After performing "L operation", control data is sent to the telephone meter, and relay "T" is executed.
After carrying out the "K operation", control data is transmitted to the telephone equipment (n), and each "station line indicator light is turned off" is performed), the central office line is released, and a transition is made to a standby state.

In addition, “1 timer start” is followed by “off link?” ”
The station line key is operated again while the station is N, and the station 1 line key is pressed again.
LK operation? ” is Y, relay “SP” is set as above.
“Restore” and “off” to the amplifier are performed, and the relay “L”
The main line will be opened after "Operation", but the main line key "L" will be released.
K operation? ``Under the condition that ``is N'', is the ``timer time up''? If `` is Y, the relay immediately shifts to ``S P 1 day after'' and the station line is released.

Therefore, the call can be captured only by operating the winning 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. 1) 14.

However, in FIG. 1, the filling machine measuring device 11 and the main device ME may be connected by individual communication lines and signal lines, and a plurality of central office lines to accommodate the main device ME may be connected. The same applies to the circuit, and various modifications 75 are possible, such as a dial ray word generation circuit may be provided in place of the dial pulse generation circuit DPG to send out a dial signal using a composite frequency.

〔Effect of the invention〕

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

[Brief explanation of drawings]

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. M E m a e a Main device, instrumentation m * @
#Telephone (button phone), Ll, L2... line terminal, LT... talking line, LS... signal line, CT
m, CTt---control circuit, SRm, SRt・
...Transmission/reception circuit, L, TK, SP...Relay, K
DP...Key/display circuit, PD...Push button tire, DPG-...Φ dial pulse generation circuit. Patent applicant: Tamura Electric Manufacturing Co., Ltd. Agent: Masaki Yamakawa (and one other person)

Claims (1)

[Claims] A button telephone consisting of a main device accommodating a central office line, and a plurality of key telephones connected to the main device by telephone lines, and capable of making dial calls to the central office line even when the button telephones are on-hook. In the apparatus, a detection means for detecting an operation of a central office line key provided on the key telephone;
office line connecting means for connecting the telephone line to the telephone line in response to detection by the detection means; and dial connection for connecting the dialing circuit of the button telephone to the telephone line in response to detection by the detection means. 1. A button telephone device, characterized in that it is possible to make a dial call only by operating the office line key.