JPS62286396A - Key telephone system - Google Patents

Abstract

PURPOSE:To easily cope with the modification of the specification of a key telephone system and to eliminate the ROM large capacity by providing an IC card in which control data (control program) corresponding to a user is registered to a key telephone main system freely attachably and detachablly, and supplying the control data from this IC card. CONSTITUTION:In the IC card ICCD to be mounted on the key telephone main system ME, the control program corresponding to the specification required by the user is stored. At the time of inserting the IC card ICCD to a connector 5 provided to the system ME, the main system ME is supplied with the power, and at the same time, the address bus, the data bus, and the control line of the main system ME and those of the IC card ICCD are connected to each other respectively. The IC card ICCD is a substitute for the readonly memory ROM of a conventional main system ME; the control circuit CPU of the main system ME IS operated by the program stored in the IC card ICCD beforehand, while the control circuit KPU of the key telephone sets KT-1,-, KT-m are operated by the program stored in a readonly memory KOM beforehand.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a button telephone device, and particularly to a small button telephone device whose specifications can be easily changed.

(Prior Art) As is well known, a conventional key telephone device consists of a key telephone main device (hereinafter referred to as the main device) and a plurality of key telephone devices connected to this main device via a cable or the like. There is.

In recent years, this type of button telephone equipment has also become more electronic.
A microcomputer (CP) is installed as a control circuit in the main device.
tJ) have been roughly manufactured to perform various types of control. This control circuit CPU includes a memory ROM for continuous use that provides operating procedures (programs) to the control circuit CPtJ, and a work area (work area) for storing necessary data.
Random access memory RA with functions such as determining
It is used in connection with M.

In this type of electronic key telephone device, various data are transmitted and received when information is transmitted between the main device and each key telephone device. The types of data can be roughly divided into (1) control data (control program data) in which the basic operating procedures of the system are fixedly determined; (2) for example, settings for a ringing telephone when receiving a call, and dialing of the receiving station line. method(
System common data (hereinafter referred to as system data) that is fixed for each system based on system functions such as DP/MF) settings and calendar/time settings, etc. (3) For example, speed dial number designation (*01 etc.) System individual data that is variably determined for each user in response to the user's usage conditions, installation location, usage method, etc., such as dialing information settings corresponding to the number and day/night switching settings of service class (hereinafter referred to as user data) It is divided into three categories.

The control data is unique to the system and cannot be changed at all, and is fixed at the time the product is shipped. For example, if the user specifies that all telephones should ring when an incoming call is received, the system data is set and fixed at the time of product shipment or equipment construction. Furthermore, the user data is variable data that can be freely and independently set by the user at any time after the system is installed.

Among these, the read-only memory ROM stores control program data (hereinafter simply referred to as a program) that determines the specifications of the button telephone device, and this program determines the ease of use of the button telephone device. Conventionally, programs with specifications are created according to the requirements of the users they sell to, but in order to satisfy the required specifications of all these users, manufacturers of key telephone devices must develop all the programs that can be used for all users. The reality is that programs are stored in the read-only memory ROM in advance and provided to the market. As a result, a functional button telephone device that meets the specifications of each user is realized.

(Problems to be Solved by the Invention) The above-described conventional techniques had the following problems.

As mentioned above, in the conventional button telephone device, all the programs that satisfy the required specifications of users of businesses, hotels, hospitals, etc. are written in advance in the read-only memory ROM.
This is stored and used within the main device. For this reason, it is necessary to accommodate a large-capacity ROM in the main device, which poses a problem in that the ROM is used inefficiently and is uneconomical. Furthermore, when a request for change is made to a program related to the requested use, there is a problem in that it cannot be easily handled.

The purpose of the present invention is to eliminate the problems of the prior art described above,
To provide a button telephone device which has good memory usage efficiency and can quickly respond to program changes.

(Means and operations for solving the problems) In order to solve the above-mentioned problems, the present invention provides a button telephone device including a key telephone main device and a button telephone device, in which control data corresponding to the user ( control program) is registered, and an IC card connector connected to an address bus, a data bus, and a control line of the main device and fixed in the main device. ¥f for supplying control data to the device
There is 'm.

(Example) An example of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing the overall configuration of a key telephone device according to the present invention. ME is key telephone main device, KT-1,・
..., KT-m is a button telephone, Go-1, ...
..., co-n is the central line, LN-11, LN
21. "", LN-"1m.

LN-2m has key telephone main device ME and key telephone KT.
-1,..., with a cable connecting to KT-m. Note that, in this figure, the internal configuration of the key telephone laKT-m is the same as that of the key telephone KT-1, so illustration thereof is omitted.

The main device ME connects a central office line circuit COT connected to a central office line CO and a sound source circuit TONE that generates central office line CO, dial tone, central line ring tone, etc. to a button telephone IfKT.
A communication path network SW having the function of connecting the PB dial originating circuit PBO3C that outputs PB dial data to the office line circuit COT, and connecting the communication path network SW to the communication path control circuit SWC. connection, import incoming call information from the central office line circuit COT,
Alternatively, a control circuit CPU that controls the operation of the central office line circuit COT, a memory ROM for continuous use that provides operating procedures (programs) to the control circuit CPU, and a random access memory RAM that stores necessary data. , a transmitting/receiving circuit XR used for exchanging signals with each button telephone KT, and a plurality of transformers T, etc.

Further, PW is a power supply circuit of the button telephone main device ME, and when the power switch SW of the button telephone device is turned on, power supply to all the button telephones KT-1 to KT-m is started. For example, button telephone P3K T
-1 includes power supply V2 → transformer bottom -11 → cable L
N-11 → Transformer T5 → Power supply circuit KPW → Transformer T
Power is supplied to the power supply circuit KPW via 6→cable LN-21→transformer T-21→earth, and the output voltage Vk of the power supply circuit KPW is supplied to the button telephone KT-1. In addition, power is supplied to the button telephone by inserting a switch at an appropriate position on the input side or output side of the power supply circuit KPW, and managing this to limit the use of the button telephone KT and save power. You can do things like that.

On the other hand, the main device ME is configured to be supplied with power when the IC card ICCD is inserted into the connector 5. That is, when the IC card I CCD is inserted into the connector 5, the switch I provided in the connector
C3W turns on and P relay turns on. As a result, the contact PS is made, and the output voltage 1 is supplied to each part of the main device ME.

The button telephone KT includes a keyboard KEY including a line selection key, a numeric keypad, and key contacts such as * and #, a light emitting diode LED as an indicator to indicate the usage status of the central office line, extension line, etc., a hook switch H3, a liquid crystal display, etc. a display DIP, a control circuit KPU that controls the button telephone KT, a read-only memory KOM, a random access memory KAM, a transmission circuit KXR1 that exchanges signals with the main device ME, a communication circuit KSL, T6,
It is configured to include a speaker SP and the like.

Further, the ICCD is an IC card that is a main part of the present invention, and the IC card ICCD is connected to the main device M by a connector 5 provided in the main device ME.1.
The details of the C-cart CCD will be described later, but the IC card I CCD replaces the conventional read-only memory ROM of the main device ME.

The control circuit CPU of the button telephone main device ME is programmed in advance by a program stored in the IC card ICCD, and the control circuit KPU of the button telephones KT-1...KT-m is stored in the read-only memory KOM. Each operates according to a pre-stored program.

The sound source circuit TONE has a dial tone, a central office line ringing tone (ringing tone from the central office line in general call receiving mode), and an extension ringing tone (ringing tone from another key telephone KT-j).
, and has the function of generating hold music.

The control circuit CPU is a station line circuit C0T-1,...
.

Incoming call detection circuit lNC-1 in C0T-n,...
.

By sequentially referring to INC-n (not shown), which central office line cor-r received the call is constantly monitored. Clock circuit CLK (not shown)
is the talk time of each button telephone KT-j and the ring time (
＠Measure the time from when the overtones start ringing until the response is received).

In addition, in the general incoming call mode, when a call from the central office line is rarely received, which key telephone among the key telephones KT-1 to KT-m is to be used to sound the central telephone ring tone is stored in advance in the RAM.
is specified. Here, it is assumed that the key telephone KT-m is the key telephone.

While operating in the general incoming call mode, the central office line Co-1゜...
・When there is an incoming call to any one of con-n (C〇-1), the incoming call detection circuit lNC-1 of the corresponding station line circuit C0T-i detects the incoming call information, and this is sent to the control circuit CPU. .

The control circuit CPU reads out the button telephone set to ring (in this example, KT-m>) from the random access memory RAM, reads out the sound source selection information, and controls the call path network SW via the call path control circuit SWC. , select the corresponding tone from ONE under the sound source circuit button telephone K
Send to T-m.

As a result, the button telephone [Speaker S on the KT-m side]
P emits a central office line ringing tone unique to the key telephone. At the same time, the light emitting diode LED corresponding to the receiving station line lights up or blinks.

Key telephone tJ On the KT-m side, when you operate the keyboard KEY to select the central office line for incoming calls and pick up the handset to answer, the control circuit K of the key telephone KT-m
The PU detects the central office line selection information and the ON information of the hook switch H3, and sends a response signal to the button via the transmitting/receiving circuit KXR, transformer T6, transformer T-2m on the button telephone side, and the transmitting/receiving circuit XR on the main device ME side. It is transmitted to the control circuit CPU on the telephone main device ME side.

In response, the control circuit CPU controls the sound source circuit TON.
E from the communication path network SW, a loop is formed in the office line circuit C0T-i, and then the office line co-
r is connected to the speech circuit KSL of the button telephone WN K T -m designated for ringing via the office line circuit C0T-i, the speech path network SW and the transformer T-1m.

In this way, a communication path is formed between the office line cor-r and the key telephone KT-m.

In this state, if you want to transfer to another key telephone, such as the KT-1 central office line, use the keyboard K of the key telephone KT-m.
When you operate the Honuma key included in EY, the station line circuit C0T
Since the tone source circuit TONE is connected to -r via the communication path network SW while forming a central office line loop, the holding tone is sent from the tone source circuit TONE through the central office line Co-1 to the other party. The samurai learns that he will be placed in custody and does so. Next, when the extension capture key included in the keyboard KEY is operated, the control circuit CPU selects the call route network S.
W is controlled, an air extension is selected, and the sound source circuit TO is connected to the extension.
An extension dial tone (extension dial tone) is transmitted from the NE to the communication circuit KSL of the button telephone 81 KT-m.

The key telephone KSL confirms the extension dial tone and dials the extension number of the transfer destination. This dial information is transmitted to the control circuit CPU of the main device ME, and the R
Access the data corresponding to the key telephone KT-1 set to AM, select the called key telephone KT-1 via the communication path network SW, and send the extension ring tone from the sound source circuit TONE to its extension loop. be done.

When the button telephone KT-1 operates the keyboard KEY to select the extension for incoming calls and raises the transmitter/receiver to answer, the control circuit KPU of the button telephone KT-1 detects this and sends a response signal to the button main device ME. Control circuit CPU
Send to. In response to this, the control circuit CPU controls the sound source circuit T.
ONE is disconnected from the call path network SW to stop extension calling, and the called button telephone K is connected to the call circuit KSL of the key telephone KT-m via the call path control circuit SWC.
Connect the communication circuit KSL of T-1.

In this way, an extension call loop is formed, and the key telephone KT-m notifies the called key telephone KT-1 that a call is being made from the central office line. Called button telephone KT-
When 1 operates the keyboard KEY and presses the station line button corresponding to the station line co-r, the information is transmitted to the control circuit CPU and the station line circuit co-r that was on hold as described above is transmitted.
The seedling state of is canceled, and the central office line CO-1 and key telephone K are
The telephone communication circuit KSL of T-1 is connected to enable central office telephone communication.

Next, the station line transmission operation will be explained. button telephone K
When the transmitter/receiver is raised on the T-m side and the central office line key is pressed to select a central office line, the control circuit K of the button telephone KT-m
The PU detects this and sends a detection signal to the control circuit CPU via the transmitter/receiver circuit KXR and transformer on the button telephone side, and the transformer and transmitter/receiver circuit XR on the main device ME side.

In response, the control circuit CPU causes the central office line circuit to form a loop, and then connects the central office line to the button telephone K, which performs a calling operation via the central office line circuit, communication path network, and transformer.
Connect to T-m communication circuit KSL.

In this way, the central office line and key telephone FjM K T -m
A communication path between them is formed.

Subsequently, when a dial operation is performed from the key telephone gN K T -m, the control circuit CPU of the main device receives the dialing information and dials the key telephone v! set in the RAM in the main device. ! Access data corresponding to iKT-m. Through this access, service class data is first read, and it is checked whether the dial information satisfies the requirements of the service class.

Note that the service class defines the range in which a key telephone can be used, and generally refers to the international calling class,
It is divided into five classes: long-distance call class, specific long-distance call class, local call class, and incoming call only class. Therefore, if the service class is registered as, for example, local calls, it is possible to make and receive calls to local phones, but calls to areas farther away than local calls,
In other words, specific out-of-town, out-of-town, and international calls cannot be used.

If the service class requirements are met, the control circuit CP of the main device then reads speed dial or auto dial setting data from the received dial data. In the case of DP (dialpu Ise) dialing, dial data is sent to the central office line circuit. The office line circuit sends the DP dial to the office line by turning the loop on and off. On the other hand, PB (push
In the case of a button) dial, the control circuit CPU of the main device starts up the PB dial origination circuit based on the setting data. The PBB dial router output from the PBB dialing circuit is sent to the central office line via the communication path network and the central office line circuit.

In addition, if the received dial data is normal data other than speed dialing or auto dialing, the control circuit CPU of the main device transmits the dial data via the central office line circuit in the case of a DP dial, or on the other hand to the PBB dial. PB if available
It is sent from the B-dial transfer circuit to the office line via the communication path network and office line circuit.

Roughly speaking, if the service class of the key telephone IKT-m is that it cannot make calls or is in the lowest class, the office line circuit is separated from the communication path network, and the sound source circuit is connected to the communication path network via the main device transformer. The lockout tone is transmitted from the sound source circuit.

Next, the general structure of the IC card ICCD and the manner in which it is attached to (or connected to) the key telephone main unit will be explained using FIGS. 2 and 3.

2 is a perspective view of the IC card ICCD and the connector, and FIG. 3 is a perspective view showing the positional relationship between the button telephone main unit ME and the IC card ICCD attached thereto.

The IC card ICCD is approximately the size of a business card, and
As shown in the figure, it is comprised of an embossed area 1 that can be engraved, an IC memory 2, and an electrode section 3 that is electrically connected to the memory 2 and includes a plurality of contacts. On the other hand, the connector 5 that mechanically and electrically connects this to the button telephone main device ME has a terminal that elastically suppresses and holds the electrode portion 3 of the IC card, a switch IC3W, and a bus in the button telephone main device ME. It has a connecting portion 6 to be connected to the button telephone main device ME, and is attached to a predetermined position in the key telephone main device ME, for example, at the upper left position on the front as shown in FIG. Note that the connector 5 is provided with a vertical type connector and a horizontal type connector, and is selectively used depending on the type of use.

The IC memory 2 is an EEPROM (Electrical I
y Eras-able and Programma
ble Read ONLY HEMORY) is used. In recent years, large-capacity devices with a capacity of 4 megabits have been realized, and there is no problem in terms of capacity.

Further, the connector 5 is a dedicated connector, and connects the data bus, address bus, and control line (for transmitting chip select signals, read/write signals, etc.) provided in the button telephone and the IC card ICCD. .

As the IC card, MF4000 or MF5000 manufactured by Mitsubishi Electric can be used.

Figure 4 shows the button telephone main device ME and the IC card IC formed when the IC card I CCD is inserted into the connector 5.
It is a block diagram showing electrical connection with a CD. The same reference numerals as in FIG. 1 in FIG. 4 indicate the same or equivalent parts as in FIG. 1. From Figure 4, connect the IC card I CCD to connector 5.
address bus in the button telephone main unit ME,
It will be clear that the data bus and control lines and the address bus, data bus and control lines of the IC card ICCD are connected to each other.

Here, the data transmission and reception system between the main device ME and the button telephone KT will be described.

FIG. 5 shows the transmission format of one frame between the main device ME and the button telephone KT.

Between the transmitting/receiving circuit XR of the main device ME and the transmitting/receiving circuit KXR of the key telephone KT-m, as shown in FIG.
Information, display information, and communication path information are each transmitted sequentially in tens of bytes. Next, the mode is switched and the button telephone BI K T goes to the main device ME (KE
Y) Information is transmitted in tens of bytes. After that, the mode is switched again.

These pieces of information become valid data when a change in status occurs, and invalid data is transmitted when there is no change. The control circuits CPU, KPU start control when valid data is received.

For example, this information transmission takes 1 bit for 1 ms and 1 frame96
This is repeated with a period of m seconds.

The information transmission between the main device ME and the key telephone KT is 60 bits and 60 msec, and the information transmission between the key telephone KT and the main device ME is 30 bits and 30 msec.
Mode switching is performed in bits of 3 msec.

Next, a method for registering a control program in the IC card ICCD will be explained with reference to a schematic diagram of the data registration device @DW in FIG. 6 and a flowchart in FIG. 7.

First, the IC card ICCD is inserted into the data registration device DW by an operator's operation as shown in FIG. Next, the master ROM written for each module is inserted into the socket. In the normal mode, in order to set the start address and stop address to Sera 1, press the address data key ADD provided on the operation panel (step S1), then press the start address numeric keys such as "A, 0, 1". press step S2) and press the set key SET (step S3>).

Step S: Continue to press the address data key ADD
4), then press the stop address numeric keys, e.g. “F,
9.9” step S5), Sera 1-Key SET
is pressed (step S6).

In this state, the contents displayed on the display device LCD are checked to confirm that there are no abnormalities (step 37).

In this state, press the writer key WR (step 38),
Transfer the data (control program) in the master ROM to the IC card ICCD. Next, press the verify key VR (step 39), and confirm that the data input to the IC card ICCD matches the data in the master ROM by checking the display on the display/LCD (step 51)
0).

The control program of the master ROM is the IC card ICC.
When it is confirmed that the input is correct in D, press the end key END (Step 511), end recognition master R
Take out the OM. Next, insert another master ROM with another control program written into the socket and replace it with the previous one) by performing the same operations as before. ilJ Il
l program 1. Transfer and register to C card ICCD.

Through the above operations, a series of control data (control program) can be registered in the IC card ICCD.

In this way, the IC card ICCD attached to the main device M E GC stores in advance a control program corresponding to the specifications required by the user.

As shown in the table, the specifications required by users are generally categorized by type of user. For example, in hospitals and schools, there are many requests to accommodate more extension lines than central office lines so that calls can be made between internal lines more frequently, while in offices, etc., there is a desire to accommodate more internal lines and to make calls between internal lines more frequent. There are many requests to manage charges for each individual phone. When installed in a factory or the like, it is often required that both the central office line and the extension line have a large capacity, and that all necessary functions such as central line calling regulations and call charge management are possible.

If a program is developed in advance for each type of user in this way, there is no need to prepare a program with a capacity that satisfies all functions.

By storing programs for each type of user in an IC card and using them selectively as appropriate, extremely great effects can be expected.

For example, one IC card has a control program that meets the specifications required by a business office, another IC card has a control program that meets the specifications required by a hospital, and still another IC card has a control program that meets the specifications required by a hotel. Store the control programs that have been created. The main device ME is equipped with an IC card that stores only a control program that corresponds to the specifications required by the user.

Therefore, unlike conventional devices, there is no need for large-capacity memory, and there is no need to store wasteful control programs in memory, resulting in improved memory usage efficiency and
We can provide inexpensive equipment.

In addition, when an abnormality occurs in the telephone device and it is difficult to discover the cause of the abnormality, the IC card storing the control program is removed from the main device ME, and the IC card storing the diagnostic program is inserted into it. By inserting it instead, maintenance work can be easily performed.

Note that even if the control program corresponding to the user is stored in an IC card and inserted into the main device ME as described above, the transmission format for the key telephones IN KT-1 to KT-m (see Fig. 5) is the same as described above. As described above, the read-only memory KO of key telephones KT-1 to KT-m
It should be added that there is no need to change the program stored in M.

Incidentally, up to now, as an embodiment of the present invention, an example has been described in which the present invention is implemented in a button telephone device in which the main device and the button telephone are separate bodies, but the present invention is not limited to this. It goes without saying that the present invention can be implemented in a stand-alone telephone, a so-called main button telephone in which a main device and a button telephone are integrally constituted, and these are included in the present invention.

(Effects of the invention) (1) Since the specifications of the button telephone device can be changed simply by replacing the IC card that stores a different control program, it is easy to deal with changes in the specifications of the button telephone device. be able to.

<2) Since only one control program can be stored on the IC card, a large-capacity ROM is not required, and the main device can be created easily and easily.

(3) Since there is no need to store unnecessary control programs in the ROM of the main device, memory usage is efficient.

(4) When an abnormality occurs in the button telephone device, the abnormality can be dealt with by inserting the IC card storing the diagnostic program into the connector of the main device ME, making maintenance work easier.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is an IC
A perspective view of the card and the connector, Fig. 3 is an external perspective view of the main device that allows an IC card to be set, Fig. 4 is a block diagram showing the key telephone and electrical connections, Fig. 5 is a diagram showing the transmission format, FIG. 6 is a schematic diagram of a data registration device for registering a control program in an IC card, and FIG. 7 is a flowchart showing the registration procedure. ME...Main device, fCCD...IC card, 5...
・Connector agent Patent attorney Michito Hiraki and one other person Figure 2 Figure 3 Figure 4 Figure 7

Claims (2)

[Claims] (1) In a key telephone device including a key telephone main device and a key telephone device, an IC card in which a control program corresponding to the user is registered is connected to an address bus, a data bus, and a control line of the main device, and an IC card connector fixed in the main device, the IC card
A button telephone device characterized in that a control program corresponding to the user is supplied to the main device from the IC card attached to the card connector. (2) Claim 1, wherein the IC card connector is capable of attaching and detaching the IC card.
Key telephone device as described in Section 1.