JPH0261197B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a button telephone device that enables on-hook calls using a speaker while omitting the speaker button of the button telephone.

[Prior Art] A button telephone of a button telephone device is usually equipped with a speaker button, and by operating the speaker button, the speaker is placed in a receiving state, and the user can freely dial and receive calls while the phone is on the hook. A method called easy-on-hook dialing has been developed in which by operating the outside line button in the on-hook state, the speaker enters the receiving state and at the same time captures the outside line, and the details are disclosed in Japanese Patent Laid-Open Publication No. 158191/1983.

[Problem that the invention seeks to solve]

However, in the above method, since the speaker button is omitted, once an off-hook call is made, it is not possible to immediately switch to an on-hook call. After the on-hook is performed after putting the line in progress on hold, the on-hook must be released from the on-hook state by operating an outside line button, and the on-hook call state must be established, resulting in a problem that the operation becomes troublesome.

It should be noted that with a simple device that does not have a hold function, the above-mentioned operation is not possible, and it is not possible to transition from an off-hook call to an on-hook call, which causes inconvenience.

[Means for solving problems]

In order to solve the above-mentioned problem, the present invention is constructed by the following means.

That is, in a button telephone device that selectively performs an off-hook call using the handset and an on-hook call using the speaker via a line selected by operating a line button on the button telephone, the line corresponds to the line in use on the button telephone during an off-hook call. a detection means for detecting the operation of a line button; a timer that starts upon detection by the detection means; and control means for causing a transition from a state to an on-hook call state.

[Effect]

Therefore, during an off-hook call, if you operate the line button that corresponds to the line in use, a timer will start, and if you go on-hook within a certain period of time before the timer times out, the on-hook call state will be automatically set. be done.

〔Example〕

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

FIG. 1 is a block diagram showing the entire configuration. The main unit (hereinafter referred to as KSU) 1 has external lines 2 ₁ to 1, such as a central office line from a central office or a telephone line from a private branch exchange.
2n is accommodated, and a key telephone (hereinafter referred to as ST) 4 ₁ to 4 m is accommodated through connectors CN ₁ to CNm according to the accommodation position, and lines 3 ₁ to 3 m each consisting of a pair of communication lines and a signal line. The outside lines 2 ₁ to 2n are each connected to the communication path switch (hereinafter referred to as TSW) 12 via the outside line interface (hereinafter referred to as LIF) 11 ₁ to 11n, while the TSW 12 and each ST 4 ₁ Track 3 from ~4m ₁
~3m means telephone interface (hereinafter referred to as
TIF) 13 ₁ ~ 13m connected via TSW1
Exchange connections are made using cross points such as analog switches or relay contacts in 2.

The LIFs 11 ₁ to 11n have functions such as incoming call detection, DC loop closure for outside lines, hold, and dialing using pulse signals or composite voice frequency (hereinafter referred to as MF) signals, and the TSW 12 has the following functions:
Between outside line 2 ₁ - 2n and ST4 ₁ - 4m, and
While it has an exchange connection function between ST4 ₁ to 4m, TIF13 ₁ to 13m has _a
It is designed to supply power for communication via a communication line, transmit/receive data signals via a signal line, supply power for control, etc.

Further, the KSU 1 is provided with a control unit including a processor (hereinafter referred to as CPU) 14 such as a microprocessor, a fixed memory (hereinafter referred to as ROM) 15, and a variable memory (hereinafter referred to as RAM) 16.
The CPU 14 executes the program in the ROM 15,
Control is performed while accessing predetermined data to RAM 16, and LIF 11 ₁ to 11
Control decisions are made according to the incoming call detection output from n and the operation data from ST4 ₁ to 4m via TIF13 ₁ to 13m, and LIF11 ₁ to 11n, TSW1
2. TIF13 ₁ to 13m is controlled, and TIF
By transmitting control data via 13 ₁ to 13 m,
It is designed to control ST4 ₁ to 4m.

In contrast to the above, in ST4 ₁ to 4m, via the switch HS ¹ and the contact RL of the relay RL,
Telephone circuit including handset (hereinafter referred to as TKC) 3
A speaker circuit (hereinafter referred to as SPC) 31 that drives 0 and speaker SP is connected in parallel to a communication line 32, and a signal line 33 is connected to a CPU 14 and a ROM 1 through a transmission circuit (hereinafter referred to as SRC) 34.
5. Similar to the RAM 16, but a smaller control unit (hereinafter referred to as CNT) 35 is connected, and a digital display (hereinafter referred to as DGP) and a tone generator in a display circuit (hereinafter referred to as DP) 36, Controls the amplifier and according to control data via SRC34
The keyboard (hereinafter referred to as KB) performs display by DGP and emits an incoming ring tone by the speaker in DP36, and similarly according to control data.
In addition to controlling the lighting, off, and blinking of each indicator light in KB37, it also controls the switch HS ² by operating each button in KB37 and off-hook operation.
operation data indicating these conditions depending on whether the
It is designed to be transmitted via SRC34.

Note that the SRC 34 has a power separation function, extracts the power supplied from the KSU 1 side via the signal line 33, stabilizes it, and supplies it as a local power V to each part that requires it.

Therefore, when off-hook is performed in any ST4, the operation data of this is transferred to the CPU 14.
The button operations in KB37 are also the same, and the CPU 14
controls the TSW12 and performs exchange connections,
If it is an external call, the dial call is made under the control of the selected LIF11, and if it is an internal call,
The DP 36 controls the ST4 on the other party's side to emit an extension ringing tone, and the call state is established in response to a response from the other party.

Also, incoming calls from outside lines 2 ₁ to 2n are sent to LIF 11 ₁
~11n and accordingly CPU1
4 controls the DP36 of each ST4 ₁ to 4m and emits an incoming call tone, so if any ST4 responds by off-hook, the
The CPU 14 controls the TSW 12 and completes the communication path.

Note that, at the same time as these controls, the indicator lights in the KB 37 are also controlled, and the corresponding lights are turned on.

In contrast to the above, when setting on-hook dialing to receive a call on speaker SP while on-hook, or on-hook call with speaker listening state, the KB37 does not have a speaker button and uses the above-mentioned easy on-hook dialing method. , If you operate the outside line button in KB37 as a line button while the phone is on, this operation data will be displayed.
The data is sent to KSU1 via SRC34, and in response, CPU14 sends control data to ST4,
It gives commands to CNT35, and CNT35
drives relay RL, puts SPC31 into the operating state, and closes the DC loop by SPC31, so that the external line operated by SPC31 according to the exchange connection of TSW12 is transmitted via contact rl in parallel with switch ^HS1 . It is connected to the outside line 2 corresponding to the button, and dial calls can be made using the dial button in the KB 37 and calls can be received using the speaker SP, and on-hook dialing and on-hook calls with the speaker receiving state are set.

In addition, if you want to set the above-mentioned on-hook dialing and speaker listening status after dialing or making a call using the off-hook, operate the outside line button corresponding to the outside line 2 currently in use while the off-hook is in use, and then If you perform on-hook within
Since the CPU 14 transmits control data and the CNT 35 performs the same control as described above,
Transition from off-hook call to on-hook call state.

FIG. 2 is a comprehensive flowchart of the control situation by the CPU 14, where A shows normal processing and B shows interrupt processing. ,
The "transmission process" 102 sequentially transmits and receives data to and from each ST4 ₁ to 4m, and the "received data analysis process" 1 is performed according to the received operation data.
After performing step 03, "detection processing" 104 is performed according to the detection outputs of the LIFs 11 ₁ to 11n.

Next, "timer processing" 111 corresponds to the status of each timer that regulates various timings for control.
, create control data for ST4 ₁ to 4m using "Create transmission data" 112, and store it in RAM.
16, and in accordance with a predetermined transmission cycle determined by a timer separate from step 111, "wait" 113 is performed until the next transmission start point, and then steps 102 and subsequent steps are repeated.

On the other hand, in B, interrupt processing is performed at regular intervals, and the CPU 11 is used for step 111.
A "timer count process" 131 is performed on the counters for each timer constituted by 4 and RAM 16 in response to clock pulses, and each counter is successively subtracted or added.

FIG. 3 is a lower routine showing the details of step 103. If the received data is Y (YES) of "External line button operation?" 201, the RAM 16
According to the status data inside, it determines ``Is the relevant ST/off-hook call in progress?'' 202, and in response to this, ``Is the outside line button that corresponds to the outside line in use?''
203 is further judged, and if this is also Y, the on-hook call is reserved, for example, after 5 seconds "Reservation timer start" 211 is performed, "The relevant
According to "ST/On-hook call reservation setting" 212,
This status data is stored in the RAM 16.

Also, step 202 or 203 is N (NO).
In this case, "other processing" 221 such as setting the easy-on hook dial status is performed.

If step 201 is N, it is determined whether the received data is "On-hook?" 231, and if it is Y, the status data in the RAM 16 is used to determine "Is the relevant ST/on-hook call reserved?" 232 corresponding to step 212. Check this, and in accordance with step 211, perform ``reservation timer stop'' 241, and proceed to step 212 by ``setting the relevant ST/on-hook call'' 242.
After the contents stored in the RAM 16 are updated by the ``on-hook call control'' 243, preparations for transmitting control data to the ST are made.

On the other hand, when step 232 is N, call termination control, etc.
Do this according to step 1.

On the other hand, in response to N in step 231, after performing "other received data analysis processing" 261, "all STs
end? Step 201 and subsequent steps are repeated until ``262'' becomes Y, and the same process is performed for each ST4 ₁ to 4m.

Therefore, operation of the outside line button is detected by Y in step 201, and upon this detection, a timer is started in step 211, and the on-hook call reservation status is set in step 212, and the on-hook call is then made. If so, control is performed to shift to an on-hook call via step 231, 232 and step 243.

FIG. 4 is a low-level routine showing the details of step 111. In step 211, "reservation timer time up?" 301 is checked, and if this is Y, the corresponding "ST/off-hook call setting" 302 is used to proceed to the step. by 212
After updating the contents stored in the RAM 16 and clearing the reservation status, "other timer processing" 311 is performed.

Therefore, if the reservation timer times up after a certain period of time, step 232 will not become Y and steps 241 to 243 will not be executed.
If it is within a certain period of time before the reservation timer times up, steps 241 to 243 are executed via Y in step 232, and the off-hook call is transitioned to on-hook call.

Therefore, even if the speaker button is omitted, you can easily transition from an off-hook call to an on-hook call by simply operating the outside line button and performing an on-hook call.
Monitoring by SP is optional.

However, in addition to on-hook dialing and speaker reception, if a separate microphone and transmitting circuit are installed, it can also be applied to hands-free on-hook calls. If the operation is detected in the same way, it can also be applied to internal calls.

Furthermore, if there is only one outside line 2, step 203 in FIG. 3 can be omitted, and
KSU1 and each ST4 ₁ to 4m may be connected by a loop-shaped line, and each control decision is made by the CPU.
Various modifications are possible, such as not using CNT 14 but instead using CNT 35.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to freely transition from an off-hook call to an on-hook call with a simple operation, so that remarkable effects can be obtained in various button telephone devices that omit a speaker button.

[Brief explanation of drawings]

The figures show an embodiment of the present invention; FIG. 1 is a block diagram of the entire configuration, FIG. 2 is a comprehensive flowchart of the control situation, and FIGS. 3 and 4 are flowcharts showing lower-order routines. 1...KSU (main unit), 2 ₁ ~ 2n...external line, 4
₁ ~ 4m...ST (key telephone), 14...CPU
(processor), 15...ROM (fixed memory), 1
6...RAM (variable memory), 30...TKC (telephone circuit), 31...SPC (speaker circuit), 35...
CNT (control unit), 37...Keyboard, HS ¹ ,
HS ² ...Full switch, RL...Relay, rl...
…contact.

Claims (1)

[Claims] 1. In a button telephone device that selectively performs an off-hook call using a handset and an on-hook call using a speaker via a line selected by operating a line button on a button telephone, the line corresponds to the line in use on the button telephone during an off-hook call. detecting means for detecting the operation of the line button; a timer that starts upon detection by the detecting means; A key telephone device comprising: a control means for causing a transition from the off-hook call state to the on-hook call state.