JP3445292B2 - Exchange system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching system,
In particular, the present invention relates to an exchange system that enables simultaneous downloading to a plurality of terminal devices.

[0002]

2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Laid-Open No. 289393/1989, download of a program was incorporated in a control unit of a subscriber line concentrator of a telephone exchange in the conventional exchange system. Then 2
The programs must be exchanged using the memory on the screen, and only the program can be downloaded, the data cannot be downloaded, and the main device that sends the program and the slave device that accepts the program are The download can be executed only in the state corresponding to the one-to-one correspondence, and the repeated download is required to download the program from the main device to the plurality of slave devices.

[0003]

In the conventional exchange system, in order to download station data and online programs to a plurality of terminal devices, data or programs common to individual terminal devices and individual data must be downloaded. In addition, it took a lot of download time.

The present invention solves the problem of such a conventional exchange system by providing an exchange system for downloading station data and online programs to a plurality of communication terminal devices accommodated in the exchange, and By providing an exchange system capable of simultaneously downloading station data and online programs by selecting all or any of a plurality of communication terminal devices, the download time can be shortened and switching of the exchange devices can be facilitated.

[0005]

SUMMARY OF THE INVENTION The present invention provides a plurality of slave devices, a master device for managing these slave devices , a slave device and a master device.
An exchange system comprising an exchange device for connecting to a storage device, wherein the main device is the same as the main device with respect to the exchange device.
Connection requesting means for requesting connection with the plurality of slave devices,
When the exchange device receives the connection request means, the exchange device
Online program or station data from the main unit
The main unit is configured so that it can be simultaneously sent to the plurality of slave devices.
And multiple connections between the device and the plurality of slave devices,
A synchronization signal from one of the plurality of slaves is
Connecting means for connecting the main device so as to be sent out,
The master device follows the synchronization signal from the one slave device.
The online program or station data
Downloading means for simultaneously transmitting to a plurality of slave devices .

Further, according to the present invention , the main device is a multi-device.
Selecting means for arbitrarily selecting a plurality of slave devices to be connected,
It is characterized by having. Furthermore, the present invention provides the main body
Is an online program sent by the above-mentioned download means.
At the beginning of the gram or station data,
Data, personal data or programs
A type control means for adding a data type code for identification,
It is characterized by including. Further, the present invention is
The device is an online program sent from the main device.
Of the program or station data, a specified online program
System or reception control means for receiving only station data.
It is characterized by what you got. Further, the present invention provides the main device
If you request connection to multiple slave devices,
You can start the download using the destination address information
Starting information transmitting means for transmitting information to be recognized as being present
And user-user information for multiple slaves
Notify the information to recognize the slave device to be downloaded
And a notification means for performing. further,
In the present invention, the plurality of slave devices are notified by the notification means.
The user's slave device downloads
Determination means for determining whether or not the
When the determination means determines that the download target
Judges the status of its own slave device and receives the download.
When it is determined that the slave device is
The download status is set and the download can be accepted.
And returns information indicating that to the main device via the switching device.
And determined that the download is unavailable.
Occasionally, information that indicates that the download cannot be accepted
Status information that is sent back to the main unit via the switching device.
And a means for returning information.

[0007]

Since the maintenance equipment for managing the data of the terminal equipment and the exchange equipment for connecting the plurality of communication terminal equipment are digital network type electronic exchange equipment adopting the time division multiplex system, all the terminal equipments from the maintenance equipment are used. Data and programs can be transferred simultaneously to.

Since the maintenance device receives the multiframe synchronization signal from one communication terminal device bidirectionally connected to this maintenance device to establish synchronization, and transfers the multiframe synchronization signal to all communication terminal devices, The synchronization of all communication terminal devices is established, and data and programs can be transferred to all communication terminal devices all at once.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1. System Configuration 1.1 Relay Method FIG. 1 is a diagram showing a configuration example of a telephone exchange system according to the present invention. The telephone exchange system is a call path switch (S
W) 1, a communication terminal device 2 such as a dealer board, a dedicated extension circuit (DLIN) 3 for connecting and controlling the communication path switch and the communication terminal device, a voice signal and a call connecting the communication terminal device and the dedicated extension circuit A connection cable 7-2 for transmitting and receiving control signals, a data management device (maintenance device) 4 using a program for controlling the communication terminal device and a general-purpose interface for inputting and modifying data of the communication terminal device, and a data management device. Communication cable 7-1 for connecting terminal adapter (TA) 5, connection cable 7-2 for connecting terminal adapter and I interface extension circuit (ILIN) 6 and transmitting / receiving data by ISDN interface, station line, hot line Or a trunk (TRK) 8 for accommodating branch lines and controlling connection between them.
A central control unit (CC) 9, which controls the entire telephone switching system and controls calls between communication terminals, and between terminals and station lines, hot lines or branch lines, for controlling the telephone switching system. Storage device (MM) 1 that stores programs, station data, and various tables
0, a communication path switch, a central control unit, and a connection control system bus 11 connecting the storage unit. Although not shown, the central control unit 9, the dedicated extension circuit 3, the trunk 8 and the I interface extension circuit 6 are logically connected. As a result, the speech path switch 1, the dedicated extension circuit 3, the I interface extension circuit 6 and the trunk 8
Operate under the control of the central control unit 9.

1.2 Configuration of Terminal Device Next, the configuration of the communication terminal device 2 will be described with reference to FIGS. 2 and 3. FIG. 2 is a diagram showing a board surface of the communication terminal device 2, and FIG. 3 is a diagram showing its functional blocks. In addition to the communication handset 25, the communication terminal device 2 has a button "CL2" corresponding to the station line CL21 accommodated in its own terminal.
1 "21-1, indicator lamp 22-1 corresponding to button" CL21 "21-1, button" HL21 "21-2 corresponding to hotline HL21, and button" HL21 "
Display lamp 22-2 corresponding to 21-2 and branch line S
Button "SL21" 21-3 corresponding to L21, lamp 22-3 corresponding to button "SL21" 21-3,
Other party's dials A to D used as auto dial
Button "A" 23-1, registered "B" 23-2
"C" 23-3, "D" 23-4 and corresponding display lamps 24-1 to 24-4, line name display liquid crystal display (LCD) 26, and dial key group for performing a dial 29 and a button "Hold" 27 for holding the call
, A button "disconnect" 28 for disconnecting the call, and an incoming call ringer 20 for audibly displaying the incoming call.

FIG. 3 is a functional block diagram showing the hardware configuration of the communication terminal device 2 having the configuration of the board shown in FIG. The communication terminal device 2 stores a call control processor (MPU) 211 that controls the entire terminal device, station data, that is, data that is different for each delivery station, and temporary information that is generated while the call control processor 211 performs control. A temporary storage device (RAM) 213 that also stores the online program and various data.
The fixed storage device (RO which stores the download program for controlling the download operation for setting to 3)
M) 212, and a temporary storage device (RAM) 2
Control is performed according to the online program stored in 13. Further, the communication terminal device 2 has a control bus 21.
Call control message transmission / reception buffer 21 connected to No. 4
5, reception circuit 216, transmission circuit 217, liquid crystal display controller 221, lamp driver 222, button scan buffer 223, ringer driver 224, speed conversion circuit 225, communication controller 226, direct memory access controller (DMAC) 227, and communication circuit 218 is provided.

The call control processor 211 accesses the fixed storage device 212 in response to a download request according to the present invention, that is, a request for setting a program and various data, and activates the download program, whereby the speed conversion circuit 225, the communication controller 226, and the direct controller. The memory access controller (DMAC) 227 is controlled, and IS
One B channel 220-2 of the DN basic interface
The online program and various data transmitted via the are stored in the temporary storage device 213. When the storage is completed, the online program in the temporary storage device 213 is activated to start the online operation of the communication terminal device. The call control message transmission / reception buffer 215, the liquid crystal display controller 221, the lamp driver 222, the button scan buffer 223, and the ringer driver 224 connected to the control bus 214 all operate under the control of the call control processor 211. Call control message send / receive buffer 21
Reference numeral 5 is for transmitting / receiving a call control message to / from the switching device, and is exchanged with a receiving circuit 216 for receiving the call control message from the switching device via the signal channel (D channel) 219 of the ISDN basic interface. A transmission circuit 217 for transmitting a call control message to the device via the D channel 219 is connected.

A liquid crystal display (LCD) 26 is connected to the liquid crystal display controller 221 and causes the liquid crystal display 26 to display an arbitrary line name under the control of the call control processor 211. Lamp driver 222
Are lamps 22-1 to 22-3 and lamps 24-1 to 24-2
4-4 is connected and the blinking of the lamps is controlled so as to display the states of the buttons corresponding to those various lamps. The button scan buffer 223 has a button "CL21" 21.
-1, "HL21" 21-2, "SL21" 21-3
Button "A" 23-1, "B" 23-2, "C" 23-
3, "D" 23-4, button "hold" 27, button "disconnect" 28 and dial key group 29 are connected, and these various buttons are scanned to detect the opening and closing thereof. The ringer driver 224 connects the incoming call ringer 20 and performs control to audibly display the incoming call.

The telephone handset 25 includes the telephone call circuit 21.
8 via one of the two voice or data channels (B channel) B1 or B2 of the ISDN basic interface, and further via a dedicated extension circuit (DLIN) 3 of the switching equipment. Is connected to the speech path switch (SW) 1. The other B channel 220-2 is used for voice or data, and in the case of voice, it is switched to the call circuit 218 by the selector in the speed conversion circuit 225 and the call handset 2 is used.
Close the circuit to 5. Note that the two B channels 220
-1, 220-2 and D channel 219 are actually digitally communicated by time division multiplexing, but here, for convenience, they are described as space division type. Therefore, in FIG. 3, description of a circuit for time-division multiplexing two B channels and a D channel and a circuit for demultiplexing time division multiplexing is omitted.

Next, the communication terminal device 2 will be described with reference to FIGS.
An example of the configuration will be described. FIG. 4 is a diagram showing a board surface of the communication terminal device 2 ′, and FIG. 5 is a diagram showing its functional blocks. The communication terminal device 2'is different from the communication terminal device 2 shown in FIG. 2 in that the button "A" 23-1, "in FIG.
B ”23-2,“ C ”23-3,“ D ”23-4 and lamps 24-1, 24-corresponding to each of these buttons
2, 24-3, 24-4 and liquid crystal display (LCD) 26
Is replaced with a plasma display with a touch sensor 26 '. Others are exactly the same as the communication terminal device shown in FIG. The plasma display with a touch sensor 26 'is provided with a sensor, for example, on the surface of the plasma display capable of displaying characters and graphics.
It is equipped with a sensor that detects the interruption of light due to the entry of a fingertip or a sensor that detects the pressure due to contact with the display surface, and has the same effect as pressing a button by obtaining the detected position information. . In addition to the button frame, the function name or line name of the button is displayed on the display.

The difference from the functional block diagram of the communication terminal device 2 shown in FIG. 2 will be described. The screen controller 228 of the plasma display unit of the plasma display 26 'with a touch sensor is processed by the processing processor 211 via the control bus 214. And a screen memory 229 for displaying graphics or characters (line name etc.) on the screen are controlled by the plasma screen controller 22.
8 and the processor 211 for processing writes the contents of the memory via the plasma screen controller 228, and the plasma screen controller 228 performs plasma display processing, and a touch information receiver 230 that receives position information from the touch sensor unit. Is connected to the control bus 214, the position information of the point touched by the processing processor 211 is received and analyzed, and a process similar to that of pressing a button is executed.

Next, the memory allocation of the storage device 30 of the communication terminal device will be described with reference to FIG. The work area 31 is
It stores information about an intermediate process that occurs when the online program 35 that performs call control and the download program 36 that controls download are executed. The personal data 32 stores data of buttons to be set for each communication terminal device according to the usability of the user, auto dial data registered by the user, and the like, and the group data 33 is a group of a plurality of communication terminal devices and is a group. Data to be shared and used is stored, and the common data 34 is data that is common to all communication terminal devices. The work area 31, the personal data 32, the group data 33, and the common data 34 are located on a temporary storage device (RAM) (FIG. 5, 213), and other data except the work area are generally station data. The battery is backed up so that it will not disappear when the power is turned off. Further, the online program 35 is also stored in the temporary storage device 30 and downloaded to facilitate replacement of the program when the specifications are changed. The download program 36 includes personal data 32, group data 33, common data 34,
The program for downloading the online program 35 is stored in a fixed storage device (ROM) (FIG. 5, 212).

1.3 Structure of Dedicated Extension Circuit The dedicated extension circuit (DLIN) shown in FIG. 1 equipped to execute transmission / reception of call control information (call control message) to / from a communication terminal device. ) 3 will be described in more detail. The dedicated extension circuit (DLIN) is, as an example, hardware for connecting a communication terminal device and a switching device with a digital interface (ISDN basic interface having 2B + D channels). Hereinafter, a detailed description will be given with reference to FIG. 7. The dedicated extension circuit (DLIN) 3 is a processing processor (MPU) 301 that controls the entire dedicated extension circuit, a fixed storage device (ROM) 302 that stores a control procedure or a processing method performed by the processing processor 301, and an arithmetic operation. Connected to a temporary storage device (RAM) 303 for accumulating data such as processing progress information, a call control message transmission / reception buffer 305 for transmitting / receiving a call control message to / from the communication terminal device 2, and a call control message transmission / reception buffer 305. A transmission circuit 306 for transmitting a call control message to the communication terminal device through the D channel 219 of the ISDN basic interface which is an interface for connecting to the communication terminal device.
It is provided with a receiving circuit 307 connected to the transmission / reception buffer 305 for receiving a call control message from the communication terminal device via the D channel 219, and an information transmission / reception buffer 308 for transmitting / receiving control information to / from the central control unit 9 of the exchange. In this dedicated extension circuit (DLIN) 3, the processing processor (MUP) 301 is a fixed storage device (ROM) 302.
Control information is transmitted and received to and from the central control unit (CC) 9 of the switching equipment in accordance with the control procedure or processing method programmed in and the call control message is transmitted and received to and from the communication terminal device 2.

Processing processor 301, fixed storage device 3
02, the temporary storage device 303, the call control message transmission / reception buffer 305, and the information transmission / reception buffer 308,
The information transmission / reception buffer 308 is connected to the control bus 304.
Is further connected to the control system bus 11 of the exchange. With this configuration, transmission / reception of control information between the processing processor 301 and the central control device 9 is performed via the control bus 304 and the information transmission / reception buffer 308, and call control between the processing processor 301 and the communication terminal device 2 is performed. Messages are transmitted and received via the control bus 304 and the call control message transmission / reception buffer 305. And two B channels 220-1 and 22 for voice or data
0-2 is connected to the communication path switch (SW) 1 of the switching device logically without any modification, and the D channel 219 for data is the call control message transmission / reception buffer 305, the dedicated extension circuit control bus 304, the information Transmission / reception buffer 30
8. Connected to a central processing unit (CC) 9 via a control system bus 11.

Two B channels 220-1 and 220-2
Although the D channel 219 and the D channel 219 are actually digitally communicated by time division multiplexing, they are described here as space division type for convenience. Therefore, in FIG.
Channels 220-1, 220-2 and D channel 219
The description of the circuit for time division multiplexing and the circuit for separating time division multiplexing is omitted.

1.4 Data Management Device The data management device 4 of FIG. 1 is composed of a main body control device, a CRT, a keyboard, a hard disk, and a personal computer equipped with an RS-232C communication interface. Therefore, the description is omitted. The functions of the data management device 4 can be roughly classified into a data creation function of creating / correcting various data of the communication terminal device 2 and a download function of sending the created data to the communication terminal device. The data creation function centrally manages all the data of the communication terminal devices 2 installed in a distributed manner. The method of managing the data created by the data creation function will be described below with reference to FIG.
Will be explained.

FIG. 8 is a diagram showing a hierarchy of data of the communication terminal device stored in the data management device 4, and the common data 41-1 and 41-2 are common to all communication terminal devices as a switching system. This is data such as line type and name. Among them, common data (ASCII) 41-1
Is for creating line name data in ASCII code, and is for adjusting the line name data to the liquid crystal display code for a communication terminal device in which the line name is displayed on a liquid crystal display. Similarly, common data (shift JI
S) 41-2 creates the line name data by the shift JIS code for the communication terminal device which displays the line name on the plasma display. When one of the liquid crystal display type and the plasma display type is used as the communication terminal device in one exchange system, it is not necessary to have two common data, but both communication terminal devices are mixed in this embodiment. It will be explained on the assumption.

The common data 41-1 and 41-2 are data for the lines in the exchange system, only the name code system is different, and the data of other line types have the same structure. The group data 42-1 forms a group of a plurality of liquid crystal display type communication terminal devices, and stores the auto dial data and the name of the auto dial destination common to the group. The group data 42-2 is data for a group which is similarly assembled by a plasma display type communication terminal device. Each communication terminal device belonging to each group has ASCII personal data 43-1 composed of personalized auto dials and auto dial names, and shift JIS personal data 43-2. These data are constructed by the data creation function of the data management device, and are ported to the communication terminal device by the download procedure described in the later section.

2. Data Management Device-Initiated Download 2.1 Multipath Control FIG. 9 is a diagram for downloading data from the data management device 4 to the communication terminal device 2 using the exchange system of the present invention. A large number of devices, telephones, etc. are connected in addition to the device 2, but they are omitted because they are not relevant in the present description. The common data, group data, personal data and programs created on the data management device 4 are
It is transmitted to the terminal adapter (TA) 5 via the RS-232C communication interface 7-1, converted into the B channel of the I interface 7-2 in the terminal adapter, and passed to the I interface line circuit 6 of the exchange. This I interface line circuit is a general-purpose I
It is a line circuit for connecting an SDN terminal. Then, station data and programs pass from the interface line circuit 6 through the time division switch 7-3 of the call switch 1 to the dedicated extension circuit 3 and again to the ISDN interface 7
-The communication terminal device 2 is reached through the B channel of -2.

The above is the data management device 4 and the communication terminal device 2.
Is the data flow in the state of communicating with each other, the program is common to all communication terminal devices, common data is also common depending on the communication terminal device form, and group data is also common to communication terminal devices of the same group. Have in common. Therefore, if data and programs common to these can be simultaneously communicated to a plurality of communication terminal devices, the same content need not be communicated repeatedly to the communication terminal devices, and the communication time can be shortened. Therefore, in the present invention, multipath control in which a plurality of communication terminal devices are multi-connected in a network of exchanges is performed, and common data and programs are simultaneously downloaded to the plurality of communication terminal devices. The method of this control is shown below.

FIG. 10 shows an example in which the communication terminal devices 2A, 2B ... 2C are multipath-connected to the data management device 4, and although the network is actually digital, it is converted to an analog switch for convenience. It is shown.
The transmission data transmitted from the data management device 4 via the terminal adapter 5 and the I interface extension circuit 6 are crosspoints 1A-1, 1 in the communication path switch 1.
B-1 ... 1C-1 and then communication terminal devices 2A, 2B ...
Reach 2C at the same time. With this method, data and programs common to all communication terminal devices can be set in all communication terminal devices by one communication. However, since the personal data is different for each communication terminal device, it is necessary to sequentially select the communication terminal devices one by one and transmit the personal data. Further, for the group data, only the communication terminal devices of the same group are selected and multi-user data is transmitted. Similarly, common data must be multi-path connected for each communication terminal device type, and if the network is controlled each time, common control data between the switching device and the data management device becomes complicated. Not only that, but it also requires path connection time for network control between the data management device and the communication terminal device.

Therefore, according to the present invention, when all the data are simultaneously set to all the communication terminal devices, all the communication terminal devices are multipath-connected and all the data are transmitted to all the communication terminal devices. By adopting a method in which only the necessary data is selected and received on the side, the complexity of path control is prevented. Therefore, the telephone number of the communication terminal device is added to the head of the personal data as a personal data identification code that can be used to uniquely determine the communication terminal device, and the group belonging to the head of the group data can be similarly determined. A group number is added as a group data identification code to be used as a judgment material, a communication terminal type is also added to the common data at the beginning of the data, and the communication terminal device selects only personal data, group data, and common data that match itself. The data is stored in one's own storage device, and all data for other communication terminal devices is read and discarded.

2.2 Multipath signal synchronization method Since the network of FIG. 10 is a digital network, the signal level in the network is constant regardless of the number of connected communication terminals, so it is not necessary to consider signal attenuation. Signal synchronization for communication is secured by the following method. In the communication terminal device that the data management device 4 synchronizes for communication, since the receiving side of the data management device is connected only to the communication terminal device 2A by the crosspoint 1A-2, the data management device is connected to the communication terminal device 2A. Only receive multi-frame sync signal. Further, since the multi-frame synchronization signal from the data management device 4 is transmitted to all the communication terminal devices via the cross points 1A-1, 1B-1, ... 1C-1, the reception synchronization of all the communication terminal devices is established. To do. That is, the data management device 4 is no different from the one-to-one communication with the communication terminal device 2A. The other communication terminal devices 2B ... 2C communicate using the synchronization of the data management device 4 and the communication terminal device 2A. At this time, the clock signal, which is the basic signal for communication synchronization, is always a single clock in the entire system because the communication terminal device is connected to the ISDN interface and is dependent on the clock supplied from the switching system.
There is no loss of synchronization due to an error in the clock of each communication terminal device.

2.3 Download Receiving Method The download receiving method will be described with reference to FIG. Since a general communication terminal device forms a part of the switching system by a calling signal from the switching device, loop control, etc., it is not necessary for the communication terminal device itself to recognize its own telephone number.
However, the communication terminal device tends to be highly functional, and the communication terminal device according to the present invention has an expanded display function as shown in FIGS. 2 and 4 and has a function of displaying the extension number of the communication terminal device itself. ing. The function of the communication terminal device is not described because it is not related to this patent, but the communication terminal device itself can always recognize its extension number, and personal data and other communication terminal devices and data management devices The extension number is used to correspond with.

FIG. 11 schematically shows the flow of download data, which sequentially flows on the network in the order from the upper data to the lower data in the figure. The data is a series of personal data,
Group data, common data, and programs are flowed in that order. As for personal data, personal identification data 32A-1 ... 32B-1 by extension number designated for each communication terminal device and group numbers 32A-2 ... 32B-2 following this are identified. The group data includes data unique to each communication terminal device including the group identification data 33A ... 33B and is common to each group formed after the group identification data 33A ... 33B. The common data includes ASCII data or shift JIS data. It is composed of data following the identifying data 34A or 34B. Since the extension numbers are individually notified to the communication terminal devices in advance as described above, the extension numbers shown at the extension numbers 32A-1 ... 32B-1 placed at the beginning of the personal data and the extension of the communication terminal device itself. The numbers are compared, and the personal data having the same personal identification data are stored in the storage device (RAM 213 in FIG. 3) of the communication terminal device.

Next, in the steps described above, each communication terminal device stores group identification data 32A-1 ... 32B-2 indicating a group number to which the communication terminal device belongs in a part of each personal data in its own storage device. Since it is set, the group identification number in the sent group data is 33A ... 3
3B stores only the group data corresponding to the group to which it belongs in the storage device of each corresponding communication terminal device. By scanning the hardware of the communication terminal device, it is possible to identify whether or not the plasma display is connected to the communication terminal device, and common data (ASCII) or hardware identification data indicated by the hardware identification data 34A. Only one of the common data (shift JIS) indicated by 34B is stored in the storage device of the corresponding communication terminal device. Also, if the data indicating whether or not the plasma display is connected to each communication terminal device is included in the personal data and registered in each communication terminal device, each communication terminal device selects common data. It can be stored in each storage device. Since the program is common to all communication terminal devices, it is unconditionally stored in the storage device of each communication terminal device.

2.4 Format of Downloaded Data FIG. 12 shows the format of downloaded data. Downloads are classified into basic type, data identification text, valid data text, and sum check data text.
The basic type (FIG. 12a) is an STX code indicating the start of a message, a text type (TXT) indicating which text is in the data identification text, valid data text, and sum check data text, and for each text type. Various types of specified data follow, followed by an end type code indicating the end of text or the end of a block of message. Then, to ensure the reliability of communication, C
CRC0 and CRC1 that encode RC check data
Is added to the final part to check the transmission error for each message.

Since the contents of each text are constructed based on this basic type, the details will be described below. The data identification text represented by the text type code “0” (see FIG. 12).
b) is located at the head of the personal data, the group data, the common data, and the program, and determines the contents of the valid data text following the data identification text. Specifically, common data, group data, personal data, and programs are identified in the data classification code D1, and when the data identification code D1 is common data indicated by “0”, the classification corresponding data D2 Identification is made between ASCII data and shift JIS data. If the data identification code D1 is group data indicated by "1", the group number is set in the type corresponding data D2 and the data identification code D1 is set. If the personal data is indicated by "2", an extension number is set in the type corresponding data D2. Since the program indicated by the data identification code D1 of "3" is received by all communication terminal devices, the type corresponding data D2 portion is unnecessary. Valid data text with text type code "1" (Fig. 12C)
Is located after the data identification text and has the address D
The contents of the address shown in FIG. 3 are sequentially expanded into the data string shown in the data D4.

The end type code D5 is set to "ETB" or "ETX", which divides the data string of the data D4 into a certain length, and the CRC is set for each division.
Checking and improving the reliability of communication, ET
B means the end of the text, that is, the type of data indicated by the data identification text, that is, common data, group data, personal data, and a series of data of the type of program has ended, and ETX means the above data. It means that the data of the type indicated by the identification text, that is, the common data, the group data, the personal data, and the data of the program type have ended.

The sum check data text whose text type code is shown as "2" (FIG. 12d) double-checks the normality of the data due to the communication error together with the CRC check, and is positioned after a plurality of valid data texts. To do. Set the value of valid data text data D4 to 1
The sum data, which is a value obtained by sequentially adding 0 texts, is set to the sum data D7 of the sum check address data text. Address of sum check data text D6
Sets the same value as the leading effective data text address D3 at which the sequential addition for 10 texts is started.

2.5 Download Reception Program Communication control of the data management device at the time of downloading is
Although the description is omitted because it is a general-purpose control for the terminal adapter, the communication terminal device on the data receiving side needs to perform the control described in 2.3 Download Reception Method. The control method will be described below with reference to FIG. FIG. 13 is an outline of the reception program of the communication terminal device. Since the part that actually receives communication data is a known method, it is not specified in the figure and the data has been received in advance and the CRC check is normal. I will explain as things. First, in step S1, the received text is read and the first text type in the text is identified. If the text is "0", the text is a data identification text, so in step S2 the data type following the text type is identified. .
When the data identification code of the data text being processed is the "3" program, the next text is read in step S3-1 in which all communication terminal devices need to take communication data. If the data type code is “0”, the hardware is scanned in step S3-2. If the own communication terminal device is the plasma display type, the code type is the shift JIS code and the processing target is step S3-2.
1 will start reading the next text.

If the data type code is "1", the data text being processed includes the group number. Therefore, in step S3-3, the group number in the data text is edited and internally formatted, Compare with the own terminal group number in the communication terminal device. If the comparison result is the same, it is necessary to read the text subsequent to the data identification text being processed as a processing target, so that the next text is read in step S3-1. If the data type code of the data text is "2", the extension number is included in the data text being processed.
In step S3-4, the extension number in the data text is edited and internalized, and this is also compared with the extension number of the own communication terminal device as described above. If the comparison result is the same, it is necessary to read the text subsequent to the data identification text being processed as a processing target, so that the next text is read in step S3-1. Data type code of data identification text "0", "1", "2"
In both cases, if the type, extension number, and group number of the own communication terminal device do not match, data that is not applicable to the own communication terminal device continues below, so the next data identification text is discarded. As a result, even if personal data and group data of all communication terminal devices are sequentially transmitted from the data management device, each communication terminal device can read and discard unnecessary data.

Next, when it is determined that the own communication terminal device should receive the text, the text is read and the text type is identified in S3-1. If the text type is "1",
Since it is valid data text, the address part is edited in S4-1 to determine the address of the internal format, and the data string in the valid data text is sequentially edited from that address in S4-2 and set directly in the memory. Go. At this time, since the sum check data for the sum check data text is actually created, the value set in the memory is added. If the end of the valid data text is ETX in S4-3, the next text is read because there is a text that follows, but in the case of ETB, the content of the next received data is different from the content currently being processed. Therefore, the process A is returned to the beginning.

At the time of text type identification, if the text type code is "2", it is the sum check data text, and the sum data included in the sum check data text is edited in step S5-1, and the sum data is edited in step S5-2. The sum data at memory setting is compared with the sum data in the sum check data text. If the two pieces of thumb data are the same, it means that the data reception and the code conversion have been normally performed, but if they do not match, it means that there is some error, and therefore a failure is recorded in step S5-3. In this case, since it is meaningless to process the subsequent valid data text, other texts are discarded until the next data identification text is found.

2.6 Download Start Screen of Data Management Device FIG. 14 shows a case where a designated group is selected on the download start screen of the data management device. ALL is a case where all communication terminal devices are to be processed, the designated group specifies the group number with E1, and the communication terminal devices included in the group are the processing targets. When the designated communication terminal device is selected, E1 becomes an extension number input, and in the case of a maximum of 5 extensions or continuous extension numbers, the first extension number and the last extension number are input so that the communication terminal device in the designated range is Three types are prepared so that they can be processed.
Further, at E2, a maximum of four types of data to be downloaded to the communication terminal device to be processed are designated to enable download. E3 is for selecting download start or list display of completion status, and it was started from the data management device, but when a communication error occurs due to factors such as when the user is using the communication terminal device This information is for notifying the maintenance person.

2.7 Download Message Sequence The interface between the data management device, the switching device and the communication terminal device will be described below. Figure 15 shows
FIG. 7 is a sequence diagram when a download is started from the data management device to one communication terminal device. Since the data management device and the switching device are connected by the ISDN interface, information is exchanged by messages.
The call setting is G1 which is a kind of message in the ISDN interface. What is shown in parentheses at the top of the arrow is to enter a special number in the destination address information to recognize that the download is started. Means to expand the bitmap in the user-user information. Although the ISDN message and each information element are not directly related to the present invention, only the destination address in the call setup message and the user / user information element in the call setup message will be described below.

The ISDN message is composed of a plurality of information elements, some of which are destination address information and user-user information. The destination address information is a portion where the dial of the caller is stored, and usually the subscriber number of the callee to be called is entered. In the present invention, the special request number determined in advance by the station data of the exchange device is sent to the exchange device to notify it of the download request. Further, since the user / user information is 128 bytes or less and the content is arbitrary, in the present invention, the accommodation position in the exchange device of the communication terminal device to be downloaded is notified. It is called a bitmap because the accommodation positions are associated with each other in order to notify a plurality of devices at the same time.

Next, the switching device confirms the connection state of the communication terminal device with respect to the bit map setting value of the call setting G1 by establishing the layer 1 of ISDN, converts the state into a bit map, and the user in the response message G2.・ Return with user information. At this point, the data management device can recognize whether or not the communication terminal device is connected, and the data management device displays the connection status of the communication terminal device in the download status list after the above-mentioned download, indicating that it is in an abnormal state. Accumulate data. Since the ISDN sequence is disconnection after response, the disconnection sequence is entered from the data management device.
The disconnection message G3 is sent, the switching device sends back a release message, and the data management device sends a release completion message. Next, the data management device again performs the call origination operation and transmits the call setting message G4 to the switching device. The call setting message includes a special number indicating that the download is actually performed, an end type, and a type of download data. The end type is used to identify whether the communication terminal device may return to the online state after downloading or wait for the next communication in the download state. The download data type indicates any one of personal data, group data, common data, program data, or a combination of a plurality of them. Call setup message G4
On the other hand, the exchange device returns a call message to the data management device, and sends the download request message G5 including the download data type to the communication terminal device.

If the communication terminal device is not in use by the user, it sends back the download preparation completion message G6 to the exchange device. This is to prevent the user from entering the download state when the user is busy or is registering a speed dial, and returns a download refusal message when the download cannot be accepted. The exchange device connects the network from the accommodating position of the communication terminal device that has received the download preparation complete message, creates a bitmap again, and sends a response message G7 to the data management device. This bit map allows the data management device to identify whether the communication terminal device has accepted the start of download, and if not, stores the data for displaying to that effect in the download status list after completion of the download. To do. Here, the communication route between the data management device and the communication terminal device has been created, and the data management device transmits data to the communication terminal device by the above-described communication method. When data communication ends,
The data management device enters the disconnection sequence according to the ISDN communication sequence and sends out the disconnection message G8. The exchange apparatus sends a release message to the data management apparatus and sends a download confirmation message G9 to the communication terminal apparatus. When the communication terminal device downloads this message and there is no error in the data, the download end message G
The normal result is added to 10 and the result is returned to the exchange. The exchange device converts the download end state into a bit map and sends it to the data management device by the call setting message G11, and notifies it of whether the download result is normal or not and disconnects it. As a result, the data management device accumulates data for displaying whether or not the download is completed normally in the above-mentioned download status list.

Finally, the data management device edits various download end states, outputs a download state list, and ends the download sequence. The above sequence is an explanation in the case of performing a sequence for simultaneous communication with a plurality of communication terminal devices, which is a feature of the present invention, by a single communication terminal device. Explained. FIG. 16 is a sequence for downloading to a plurality of communication terminal devices, and the first difference from FIG. 15 is the bitmap shown in the user / user information of the call setup message H1 from the data management device. From this, the exchange device is a part which determines the communication terminal device to be downloaded and sends out the download request messages H2-1 and H2-2 individually, and the download preparation complete message H3-
1 and H3-2 are stored for conversion into a bitmap corresponding to the communication terminal device, and are returned in the response message H4. The second point is confirmation of download completion, and download confirmation message H5- is sent to multiple communication terminal devices.
1 and H5-2 are sent, information is received by the download end messages H6-1 and H6-2, the result is edited into a bit map, and the result is sent back by the call setting H7.

3. Communication terminal device-led download 3.1 Differences from data management device-led download The data management device-led download described above
The download function is activated from the data management device, and it is possible to download to one communication terminal device or a plurality of communication terminal devices. On the other hand, the communication terminal device-initiated download activates data download from the communication terminal device side to the data management device. In the communication terminal device-led download, the control method among the communication terminal device, the exchange device, and the data management device is different, but the communication message and the like are the same as those in the data management device-led download.

3.2 Message Sequence Communication terminal device initiative type download control sequence
This will be described below with reference to FIG. The communication terminal device transmits a download request message J1 to the exchange device.
In this message, the type of data requested to be downloaded is specified. When the exchange receives this message, it sets the received extension number to the destination address in the call setup message J2, sets the fact that it is a download request and the data type requested to be downloaded in the user / user information, and sets the call. The setting message J2 is transmitted. The data management device returns the response message J3 and enters the frame synchronization procedure for downloading. At this point of time, since the speech path of the switching device is not closed, the data management device is waiting for the establishment of frame synchronization. Next, when the exchange device transmits the download preparation completion J4 to the communication terminal device, the communication terminal device starts frame synchronization establishment. In the communication terminal device-initiated download, since the data management device and the communication terminal device are in a one-to-one relationship, the exchange device closes a two-way call. Actually, the process from the response message J3 to the closing of the communication path is executed in a short time, so that the frame synchronization is instantaneously established. When the frame synchronization is established, the data management device starts the transmission of the data designated by the call setting J2 and ends with the disconnect message J5 after the end of the data transmission. Upon receiving this disconnection message, the switching device releases the communication path. The data management device initiative type outputs the download status list at the end of data transmission, but in the communication terminal device initiative type download, the maintenance person is operating on the communication terminal device side, so the display of the communication error is displayed on the LCD of the communication terminal device. Perform on the display or plasma display.

[0048]

As described above, the station data and the online program can be downloaded to the communication terminal device accommodated in the exchange device, and all or any of the plurality of communication communication terminal devices can be selected. Then, station data and online programs can be downloaded at the same time. According to the present invention, station data and online programs can be downloaded to a communication terminal device accommodated in a switching device, and a plurality of communication terminal devices can be selected all or arbitrarily to obtain station data and online programs. The download time can be shortened by downloading the program at the same time. Further, since the communication terminal device receives only the predetermined online program or the station data, the switching system can be switched by an easy download method.

[Brief description of drawings]

FIG. 1 is a diagram showing a relay system of a telephone conversion system according to the present invention.

FIG. 2 is a view showing a board surface of a communication terminal device with a liquid crystal display.

FIG. 3 is a functional block diagram of a communication terminal device with a liquid crystal display.

FIG. 4 is a view showing a board surface of a communication terminal device with a plasma display.

FIG. 5 is a functional block diagram of a communication terminal device with a plasma display.

FIG. 6 is a diagram showing a memory configuration of a communication terminal device.

FIG. 7 is a block diagram of a dedicated extension circuit.

FIG. 8 is a diagram showing a configuration of communication terminal device data in the data management device.

FIG. 9 is a diagram showing a download communication state.

FIG. 10 is a multipath connection diagram.

FIG. 11 is a diagram showing a flow of download data.

FIG. 12 is a diagram showing a download text structure.

FIG. 13 is a diagram showing an outline of a download program.

FIG. 14 is a diagram showing a download screen.

FIG. 15 is a diagram showing a data management device-initiated individual download sequence.

FIG. 16 is a diagram showing a data management device initiative type multiple download sequence;

FIG. 17 is a diagram showing a communication terminal device-led download sequence.

[Explanation of symbols]

1 Call path switch 2, 2'communication terminal device 3 Dedicated extension circuit 4 Data management device 5 terminal adapter 6 I interface extension circuit 7-1 Communication cable 7-2 Connection cable 8 trunk 9 Central control unit 10 storage device 11 Control system bus 20 Incoming Ringer 21 line button 22, 24 Indicator lamp 23 Auto dial button 25 handsets 26 Liquid crystal display for line name display 27 Hold button 28 disconnection button 29 Dial keys 30 storage devices 211 Call control processor 212 ROM 213 RAM 214 control bus 215 Call control message send / receive buffer 216 Receiver circuit 217 Transmitting circuit 219 ISDN D channel 220 ISDN B channel 221 LCD display controller 222 lamp driver 223 Button scan buffer 224 Ringer Driver 225 speed conversion circuit 226 Communication controller 227 Direct Memory Access Controller 228 Plasma Screen Controller 229 screen memory 230 touch information receiver 301 Processor 302 ROM 303 RAM 304 DLIN control bus 305 Call control message send / receive buffer 306 Transmitter circuit 307 Receiver circuit 308 Control information transmission / reception buffer

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H04M 3/00 H04M 3/16-3/20 H04M 3/38-3/40 H04Q 3/54-3 / 56

Claims (6)

(57) [Claims] 1. A plurality of slave devices and management of these slave devices .
And a switching device that connects the slave device and the master device to each other, wherein the master device includes the master device and the plurality of slave devices with respect to the switching device.
Connection requesting means for requesting a connection between the main device and the exchange device, when the exchange requesting means receives the connection requesting means.
The line program or station data is the plurality of slave devices.
So that the master device and the plurality of slave devices are simultaneously transmitted to the master device.
The device is multi-connected to the device and the plurality of slave devices are connected.
The synchronization signal from one of the slaves is sent to the master.
Connection means for connecting as described above, and the master device follows the synchronization signal from the one slave device.
The online program or station data
And a download means for simultaneously sending to a plurality of slave devices . 2. The main device comprises a plurality of slave devices for multi-connection.
2. The exchange system according to claim 1 , further comprising: a selection unit that arbitrarily selects the position . 3. The main unit is sent by the download means.
Top of online program or station data to be issued
Common data, group data, personal data or
Attach data type code to identify that it is a program
And a type control means for adding.
Item 3. The exchange system according to Item 1 or 2. 4. The slave device is transmitted from the master device.
Of the online program or station data,
Receive only online programs or station data
A communication control means.
The exchange system according to any one of 3 above. 5. The master device requests connection to a plurality of slave devices.
Destination address information to the above switching device
And send information to recognize that it is a download start
Start-up information transmission means and user-user information for a plurality of slave devices.
Notify the information to recognize the slave device to be downloaded
5. A notification means, and claim 1.
The exchange system according to any one of 1. 6. The notification means notifies the plurality of slave devices.
User / user information that is
When the determination means determines whether or not it is a download target, and when the determination means determines that it is a download target
To determine the status of its own slave device and receive the download.
When it is determined that the
Is set to the download state and the download can be accepted
Information indicating that it is returned to the main device via the switching device.
Send it and determine that it is not available for download
Indicates that the download cannot be accepted
A state in which information is returned to the main device via the exchange device.
An information returning means is provided.
The exchange system according to any one of items 5 to 5.