JPS63242096A - Key telephone system - Google Patents

Abstract

PURPOSE:To reduce power consumption as a whole by blinking in green for a display only corresponding to the newest holding and blinking in red for the holding display so far. CONSTITUTION:A memory 16 storing the holding state of line wires 21-2n for each key telephone set, and a control means 35 referencing the content of the memory 16 and applying color display blink having much power consumption for the display only corresponding to the newest holding among the holding display of the key telephone set holding the line wires 21-2n and applying blick of color with smaller power consumption for the display corresponding to the preceding holding, are provided. Then the number of displays is reduced and the power consumption is reduce as a whole.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a button telephone device that accommodates a plurality of outside lines and displays the status of each outside line in a plurality of colors for each button telephone. be.

[Conventional technology]

In general, key telephone devices display an external line call in progress and a call on hold for easy identification, and when a call is placed on hold using one of the key telephones, the outside line for which the call was placed on hold and the other button are displayed. In order to make it easier to distinguish between the outside line on which you performed a hold operation on your phone, the display corresponding to the outside line you are holding is blinking green, and the display corresponding to the outside line being held by someone else is blinking red. The display corresponding to the outside line lights up continuously in red.

[Problem that the invention seeks to solve]

However, for light emitting diodes (hereinafter referred to as LEDs) used as indicator lights for each color, green ones must have a larger current flow than red ones, and green LEDs have a larger power consumption. If you repeatedly put each outside line on hold on any button telephone, all displays will turn green (L).
Since the ED blinks and the load on the power supply becomes large, it is necessary to provide a power supply with a capacity corresponding to this, which makes the power supply large and expensive, and a commercial power supply is usually used. If a storage battery or the like is provided as a measure against power outages, this also requires a large-capacity battery, which similarly poses the problem of being large and expensive.

[Means for solving problems]

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

That is, in the above-mentioned button telephone device, there is a memory that stores the hold state of each outside line for each button 7M and each telephone set, and the latest hold status of the button telephone that has performed the hold operation of the outside line by referring to the contents of this memory. A control means is provided for displaying only the display corresponding to the operation by blinking a color-coded indicator light that consumes a large amount of power, and displaying the display corresponding to the previous pending operation by blinking a color-coded display light that consumes a small amount of power. It is something. [Operation] Therefore, only the display corresponding to the latest pending operation flashes in green9, and the previous pending/on-hold display flashes in red, reducing overall power consumption.

〔Example〕

Hereinafter, the present invention will be explained in detail with reference to figures showing examples.

FIG. 2 is a block diagram showing the entire configuration. The main unit (hereinafter referred to as KSU) 1 accommodates external lines 21 to 2n, such as central office lines from a central office or telephone lines from a private branch exchange. In addition, connectors CN1 to CNm corresponding to one accommodation position, and lines 31 to 3 each consisting of one communication line and one signal line
4. Key telephone (hereinafter referred to as 5T) via m. -4m are connected, and external lines 21 to 2n are each connected to a communication path switch (hereinafter referred to as TSW) 12 via an outside line interface (hereinafter referred to as LIF) 1h to 11n, while
The lines 31-3m from TSWl2 and each 5T41-4m are telephone interface (hereinafter referred to as TIF) 13t-
13rn, and the exchange connection is performed by a cross point such as an analog switch or relay contact in TSW12.

The LIFs 11t to 11n have functions such as detecting incoming calls, closing a DC loop for outside lines, placing calls on hold, and dialing using pulse signals or composite voice frequency (MF) signals. and 5T41
TIF 131-13m has an exchange connection function between ST4-4m and between ST4-4m, while TIF 131-13m has a
For T41 to T4m, power for communication is supplied via the communication line, data signals are transmitted and received via the signal line, and power for control is supplied.

KSol also includes a processor (hereinafter referred to as CPU) 14 such as a microprocessor, and a fixed memory (hereinafter referred to as R
OM) 15 and variable memory (hereinafter referred to as RAM) 16 are provided, and the CPU 14 collects programs in the ROM 15 and performs control while accessing predetermined data to the RAM 16. ,LIF1
Incoming call detection power from 1t to 11n, TIF131 to 13
The LIFl 1! ~11n,T
In addition to controlling SWl 2 and TIFl 3t to 13m, it also controls 5T41 to 4m by transmitting control data via TIFs 131 to 13m.

On the other hand, a recording unit (hereinafter referred to as REU) 17 using an integrated circuit memory is provided, and the input/output of the REU 17 is connected to external lines 21 to 2n or each of 8T41 to 4 via TSW12.
m, and external lines 21 to 2 are connected according to the control of the CPU 14.
It is responsible for sending response messages to KS and recording messages from external lines 21 to 2n.
In the old main power supply, a commercial AC power supply was used, which was transformed, rectified, and stabilized in the power supply unit (hereinafter referred to as Ps) 18, and supplied to each part as power E. A power failure detection circuit (hereinafter referred to as PFD) 19 is provided to detect a power failure, and provides the power to detect a power failure to the CPU 14, and the CPU 14 accordingly performs control during a power failure.

Additionally, a backup storage battery (hereinafter referred to as BAT) 20 is provided to ensure operation for a certain period of time even in the event of a power outage.

Regarding the above, at 5T41 to 4m, a line, communication circuit (hereinafter referred to as TKO) 31 is connected to the communication line 32, and a transmission circuit (hereinafter referred to as 5RC) 34 is connected to the signal line 33.
Through CPU14 and ROMI5, RAM1
6, but a smaller control unit (hereinafter: CN
T) 35 is connected, and the display circuit (hereinafter referred to as DP) 3
Controls the digital indicator (hereinafter referred to as DAP) 36as indicator light (hereinafter referred to as PL) 36b, tone generator, and amplifier in 6, and controls the DGP according to control data via 5RC34.
36a and PL36b and emit an incoming ring tone through a speaker, etc., and also a keyboard (hereinafter referred to as
KB) 37, automatic dial key (ADK) 37b1, function keys for various purposes (FUK) 37C, and hook switch Ha. Operation data indicating the situation is transmitted via the 5RC34.

In addition, 5RC34 has a power supply separation function, and the signal line 33
The power supplied from the KStll side is extracted, stabilized, and then supplied as local power V to each part that requires it.

Therefore, if any Sr1 goes off-hook, its operation data will be received by the CPU 14, and the key operations in KB37 will be the same.
The CPU 14 controls the TSW 12 according to the operation of the outside line key or extension key and the operation of the DK37a, and performs an exchange connection.
A dial call is made under the control of the IFll, and if it is an extension call, an extension ringing tone is emitted under the control of the DP 36 for the other party's Sr1, and the call state is established by the response of the other party.

In addition, incoming calls from outside lines 21 to 2n are handled by LIF 111 to 1.
1n, and in response, the CPU 14
4. ~4m DP 36 and emits an incoming call tone, so if any Sr1 responds by going off-hook, the CPU 14 controls the TSW 12 accordingly and completes the call path.

Note that, at the same time as these controls, the PL 36b in the DP 36 is also controlled, and the corresponding lights are turned on.

FIG. 3 is a flowchart of the control situation by the CPU 14 when the hold key in the FUK37C is operated, and is executed in response to reception of operation data from any of 5T4t to 4m.

That is, first, the operated key is "Hold key? J 1
01, and if this is Y (YES), RAMI
Based on the status data in B, the relevant “Outside line acquisition?J”
102 is checked, and if this is N (No), the process moves to "Hold key processing in other states" 103, whereas in response to Y in step 102, the corresponding LIFll is controlled and "Hold captured external line" 111 Then, data indicating this state is sequentially stored in a predetermined area in the RAM 15 in correspondence with ST4, and "storage of pending order" 112 is performed.

Next, referring to the contents of the predetermined area mentioned above, the ST4
``Determine the previous self-holding external line Ah, 9?J121, and if this is Y, ``Previous holding external line/Red holding display'' 1
After performing 22, "Latest hold outside line e green hold display"
123, and further performs ``display of other ST's relevant outside line/red hold'' 124.

Note that in response to N in step 121, the process immediately moves to step 123.

On the other hand, if step 101 is N, the operated item determines "External line key? J131", and in response to "Y", it checks "External line on hold? J132" (Y) in the same way as in step 102. If there is, the relevant ST further checks the off-hook state force 133 in the same way as step 102, controls the corresponding LIFll according to Y of this, and
On the other hand, when Step 131 is ON, the process goes to ``Other key processing'' 141, and when Step 132 is ON, the process goes to ``External line key processing in other states'' 1.
42, and in response to step 133 N, the process moves to "external line key processing in on-hook state" 143, respectively.

Regarding step 134, "Judge the held external line A1J151 by the relevant ST in the same way as step 121, and if this is Y, "Latest held external line on hold/green hold display.''
Do 152.

If step 151 is N, step 152
omitted.

Therefore, as shown in FIG. 1, an example of the display status is shown in which the pending display is performed in red or green.

In other words, the external lines 21 to 2 provided in a part of FUK371'
Red (hereinafter referred to as R) and green (hereinafter referred to as G) LEDs are housed in the outside line keys 371 to 316 corresponding to 6, respectively.
If the ST is in a call using the outside line 24 and the ST is in a call using the external line 24, all of these are connected to the R indicated by ■.
It is lit continuously.

Next, when the hold key 377 is operated in the self-ST, the display of the outside line key 374 changes to flashing G indicated by G, as shown in φ), and a hold display is performed.
Further, when the outside line key 375 is operated to make a call via the outside line 2s, the display of the outside line key 375 becomes R lit continuously.

Furthermore, if the outside line 2s is also put on hold by the operation of the hold key 3TT, the display of the outside line key 375 will flash G in response to the latest hold operation, and the outside line key 375 will be displayed in a flashing state due to the previous hold operation. 374 display is just blinking, G
The blinking of indicates the latest held external line by the own ST, and the blinking of R indicates the previous held external line by the own ST.

Note that the hold display by the own ST and the hold display by the other 8T are made to have different blinking cycles to enable identification.

FIG. 4 is a flowchart similar to FIG. 3 when a judgment corresponding to the detection power of the PFD 19 is added.
In the backup state due to 0, PFD19 generates detection power, but there is disagreement [power outage? Step 2 only when J213.235 is Y and step 213 is Y.
Steps 21 and 222 are executed, and steps 251 and 252 are executed only when step 235 is Y, whereas steps 221 and 222 are omitted when step 213 is ON, and in response to NK at step 235, “hold release outside line / red The other features are the same as those shown in FIG. 3 except that the call display 236 is performed and steps 251 and 252 are omitted.

That is, in the case of FIG. 4, the same control as in FIG. 3 is performed only during a power outage.

Therefore, the number of G displayed is reduced, overall power consumption is reduced, and the PS
It is possible to make the power supply circuits, etc. in the IB, BAT20, and 8RC34 small in capacity, and these can be easily made smaller and lighter, so that the price of the entire device can be reduced.

However, the configurations in Figures 1 and 2 can be arbitrarily selected depending on the conditions, and in Figures 3 and 4, each step may be replaced with another equivalent step, or the order may be changed. You can replace them or omit unnecessary ones <, R% c
The present invention can be modified in various ways, such as being applicable not only to LEDs, but also to indicator lamps of various colors having power consumption magnitude relationships.

〔Effect of the invention〕

As is clear from the above explanation, according to the present invention, by reducing display power, the capacity of the power supply can be reduced, and each part of the power supply can be made smaller, lighter, and cheaper, and can be used in various button telephone devices. Remarkable effects can be obtained.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a diagram showing the display situation, FIG. 2 is a block diagram of the entire configuration, and FIGS. 3 and 4 are flowcharts of the control situation. 1---@KSU (main unit), 2. ~2na a *・
Outside line, 41-4m...ST (key telephone), 14
...@cpo (processor), 15...ROM
(fixed memory), 16...RAM (variable memory)
, 35--”-CNT (control unit), 36...DP(
display circuit), 37...keyboard, 41...D
GP (digital display), 371-376...outside line key, 37T...9, hold key.

Claims (1)

[Claims] In a button telephone device comprising a main device accommodating a plurality of outside lines, and a plurality of button telephones equipped with indicator lights that individually display the status of each outside line in a plurality of colors, the hold state of each outside line is displayed. A memory is stored for each of the key telephones, and the contents of the memory are referred to, and while the key telephone that has performed the hold operation for the outside line is displayed on hold, only the display corresponding to the latest hold operation is divided into colors with large power consumption. 1. A button telephone device, characterized in that the key telephone device is provided with a control means for displaying a display corresponding to a previous hold operation by blinking a display light of a different color with a small power consumption.