JP2002315028A - Multiple circuit digital cordless telephone system and multiple circuit digital cordless telephone method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multiple circuit digital cordless telephone system, which easily deals with the change of the number of accommodated telephone lines, without changing the hardware of telephone terminals which con be used as a cordless telephone. SOLUTION: An exchange 1 comprises a circuit controller 14 and a web server 15. The server 15 generates data for indicating the circuit state from the number of accommodated telephone lines and information of the circuit state, including information of usage states of the telephone lines transmitted from the circuit controller 14 and sends the data to a cordless telephone 3. The telephone 3 comprises a browsing means for indicating the circuit condition of the accommodated telephone lines on a display screen, according to the data for indicating the circuit states sent from the server 15 and an operating means for at least selecting a line from the circuit state of the accommodated telephone lines indicated on the display screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-line digital cordless telephone system accommodating a plurality of telephone lines and having a so-called private branch exchange.

[0002]

2. Description of the Related Art Conventionally, a key telephone system has been generally used as a premise system for accommodating a plurality of telephone lines, but all cables must be connected between a main unit having an exchange and each key telephone. In addition, installation work such as cable routing is required, and the installation position of the key telephone is limited to some extent.

In order to solve this problem, a cordless telephone which connects a radio base station to the exchange and connects to the exchange via the radio base station, instead of a key telephone connected to the exchange by a cable. A multi-line digital cordless telephone system using a telephone has been provided.

[0004]

However, as for the cordless telephone used in the conventional multi-line digital cordless telephone system, it is necessary to develop a dedicated telephone corresponding to a plurality of lines, which requires a large development cost. Was. Also, when the number of telephone lines accommodated by the system is increased to increase the number of line buttons to be selected, there is a problem that a new cordless telephone needs to be developed.

In view of the above, the present invention provides a multi-line digital cordless telephone which can easily cope with a change in the number of telephone lines to be accommodated without changing the hardware of a telephone terminal usable as a cordless telephone. The purpose is to provide a system.

[0006]

In order to solve the above-mentioned problems, a multi-line digital cordless telephone system according to the present invention comprises an exchange capable of accommodating a plurality of telephone lines, a cordless telephone, and an exchange connected to the exchange. A wireless base station for performing wireless communication with a cordless telephone, wherein the exchange recognizes the number of telephone lines accommodated in the exchange and includes a plurality of telephones accommodated therein. A line control unit for controlling and managing the line use state; and line state display data including information on the number of the telephone lines transmitted from the line control unit and information on their use states. And a Web server unit for generating the data and sending the generated data to the cordless telephone. The cordless telephone has a display element and the Web server unit. And browser means for the display data sent by coming the line status display the line status of a telephone line that is the housing on the screen of the display device,
Operating means for selecting at least a line from a line status screen of the accommodated telephone line displayed on the screen of the display element.

[0007]

In the multi-line digital cordless telephone system having the above structure, the Web server of the exchange uses the line status information of the telephone line accommodated in the exchange transmitted from the line control unit to display the screen of the line status. Display data is generated and sent to the cordless telephone.

In the cordless telephone, a line status screen of a plurality of accommodated telephone lines is displayed by the browser means from the line status display data received from the exchange. The user selects a line from this screen,
You can make or answer calls.

When the number of telephone lines accommodated in the system increases, the line control unit informs the Web server unit of the state of the new telephone line, and the Web server unit displays a new line state screen. Generate data and send it to a cordless phone. Therefore, even if a cordless telephone is not newly developed, the updated line status screen of a plurality of telephone lines is displayed, and a line can be selected from the updated screen to perform a call or call response operation. Can be.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a multi-line digital cordless telephone system according to the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an example of the entire configuration of a multi-line digital cordless telephone system according to this embodiment. An exchange 1 accommodating a plurality of public telephone lines and having a Web server function, and a radio base station 2 And a cordless telephone 3 having a browser function. Cordless telephone 3
FIG. 1 shows only one cordless telephone 3, but a plurality of cordless telephones 3 are provided.

The exchange 1 includes a line interface 11 for accommodating a plurality of public telephone lines, and an exchange switch 12.
, A base station interface 13 for connecting to the radio base station 2, a line control unit 14, and a Web server unit 15. Then, the line control unit 14 controls the system bus 16
, A line interface 11 and an exchange switch 12
, Base station interface 13 and Web server unit 1
5 is connected.

The line control unit 14 manages and controls the entire operation of the exchange 1, and is constituted by a microcomputer. The exchange 1 can accommodate a plurality of public telephone lines, but the line control unit 14 recognizes the number of telephone lines actually accommodated and the line terminals to which the telephone lines are connected. .

The line control unit 14 controls the exchange switch 12 and the line interface 11 when an outgoing line is transmitted from the cordless telephone 3 and an incoming call is received from the external line to the cordless telephone 3 so that the line is connected to the cordless telephone 3. It performs control processing for forming a communication path between them, control processing for an extension call, control processing for a transfer, and the like.

The line control unit 14 transmits the line status information including the recognized number of accommodated lines and the line use state information such as “in use” or “free” to the Wen.
b Send to the server unit 15. In the case of this embodiment, the line control unit 14 changes the number of accommodated lines,
Each time the usage status of each line changes, the latest line status information is sent to the Web server unit 15.

The Web server section 15 is constituted by a microcomputer, and is used to construct a so-called intranet and provide various kinds of information to the cordless telephone 3. For this reason, although not shown, a memory for storing provided information (including programs) is provided.

Further, in this embodiment, the Web server unit 15 determines the number of lines actually accommodated by the exchange 1 and the use state of the lines from the line status information sent from the line control unit 14. Recognize and display the line status display data reflecting those, using HTML (Hyper Text Ma
rkup Language) file and provide it to the cordless telephone 3.

In this embodiment, the Web server unit 15
Is set to a fixed extension number. As will be described later, when the cordless telephone 3 makes a call to the extension number addressed to the Web server unit 15 in order to request transmission of line status display data, the line control unit 14
And a highway link between the Web server unit 15 and
The Web server unit 15 sends the generated HTML file of the line status display data to the cordless telephone 3.

The cordless telephone 3 of this embodiment is
PHS (Personal Ha) with browser function
ndyphone System) A telephone terminal is used in a private standard mode.

FIG. 2 is a block diagram showing an example of the configuration of the cordless telephone 3. The antenna 31, the RF processor 32, the transmission / reception data processor 33, the microphone amplifier 34, the speaker amplifier 35, and the microphone 3MC
, Speaker 3SP, memory 36, LCD (Liq
uid Crystal Display) Driver 3
7, an LCD 38, a key operation unit 39, and a control unit 30.

In this example, the memory 36 is constituted by a flash memory as a rewritable nonvolatile memory. As described above, this memory 36 has W
The extension number of the Web server unit 15 for requesting the Web server unit 15 to transmit the line status display data is stored.

The control unit 30 is constituted by a microcomputer, and includes a CPU 301 and a program ROM.
302 and a work area RAM 303 are connected via a system bus 304.

The ROM 302 includes a communication application program, such as a program for controlling a sequence of outgoing and incoming calls, necessary for telephone communication, a program for implementing a browser function, a program for controlling display of the LCD 38, Display data for menu display and the like are stored.

The RAM 303 is provided with a memory area for temporarily storing the received data obtained, and for use as a work area.

The control unit 30 is configured to input information indicating the state of numeric keys, cursor keys, and other function keys. When a user performs a key operation, the control unit 30 receives the information. Whether the key is a numeric key or a cursor key is detected, and a process corresponding to the detected key is executed.

The control unit 30 has an LCD driver 37
Is connected, and the control unit 30 uses the program and display data stored in the ROM 302 to
At 38, a standby screen and a line status screen (browser screen) to be described later are displayed.

Although not shown, the control unit 30 includes a buzzer and an LE for notifying the user of an incoming call.
D (light emitting diode) and the like are also connected.

Next, main operations of the exchange 1 and the cordless telephone 3 configured as described above will be described. FIG. 3 is a flowchart for explaining a main operation of the cordless telephone 3, and FIG. 4 is a flowchart for explaining a main operation of the exchange 1 corresponding to the operation of the cordless telephone 3.

As shown in FIG. 3, the control unit 30 of the cordless telephone 3 determines whether or not the browser function has been started by the user (step S101). If the browser function has not been started, other processing is performed (step S101). Step S10
2).

When it is determined that the browser function has been started by the user, the control unit 30 reads the extension number of the Web server unit 15 stored in the memory 36 and automatically dials the extension number (step S1). S103). The automatic dialing to the Web server unit is a request for acquiring line status display data of the telephone line accommodated in the exchange 1. This cordless telephone 3
Is transmitted to the exchange 1 via the wireless base station 2.

As shown in FIG. 4, the line control unit 14 of the exchange 1
(Step S121), and the
When the extension incoming to the eb server unit 15 is not detected,
Other processing is performed (step S122).

When the line control unit 14 of the exchange 1 detects an extension incoming call from the cordless telephone 3 to the Web server unit 15, the line control unit 14 sets a highway link between the Web server unit 15 and the cordless telephone 3, and connects both. Connection is made (step S123).

Then, the Web server unit 15 generates from the line status information transmitted from the line control unit 14,
An HTML file for displaying the line status is sent to the cordless telephone 3 via the wireless base station 2 (Step S)
124). In this HTML file, link data for each line associated with the display is also embedded. The link data in this case is a special number for the exchange 1.

When the cordless telephone 3 receives the HTML file from the Web server unit 15 (step S104), the line status is displayed on the screen of the LCD 38 by the activated browser function (step S105). FIG. 5 shows an example of a line status screen displayed on the LCD 38 at this time. The example of FIG. 5 is a case where six telephone lines are accommodated. The processing operations that can be performed by the cordless telephone 3 include “transmission”, “response” (incoming response), “transfer”,
“Abbreviated” (abbreviated dialing) is displayed so that it can be selected by the user. The browser screen of the line status in FIG. 5 is a start menu of the telephone function of the cordless telephone 3.

FIG. 5A shows a state in which all six lines are free. FIG. 5 (B)
Indicates that the highlighted lines 2 and 4 of the six lines are in use. The user
On the line status screen of FIG. 5, an operation of selecting one of the lines can be performed, and the processes to be started include “outgoing”, “answer” (incoming response), “transfer”,
An operation of selecting one of “shortening” can be performed.

When a line is selected, an underline is displayed below the line number, and when a process to be started is selected, an underline is displayed below characters indicating the process. FIG. 5B shows a state in which the idle line “1” is selected and “outgoing” is selected.

Therefore, the cordless telephone 3 waits for the user to select a line (step S10).
6) When it is confirmed that the line has been selected, it is determined what has been selected as the process to be started (step S107). If it is determined in step S107 that "call" has been selected, the input of the telephone number from the user is accepted (step S108). When the input of the telephone number is completed, the input destination telephone number is added to the special number of the link data of the line selected in step S106, and the telephone number is transmitted to the exchange 1 via the wireless base station 2. A call is made (step S109).

When the line control unit 14 of the exchange 1 detects the special number of the link data of the selected line from the cordless telephone 3 and the destination telephone number added thereto, an "outgoing" operation is performed on the cordless telephone 3. Is detected (step S125), a line for outgoing outgoing call is selected based on the special number of the link data of the above line, and a dial is transmitted using the telephone number of the other party (step S125).
126).

Then, the line controller 14 of the exchange 1 monitors the other party's response to the dial transmission (step S).
127) After confirming the other party's response, the exchange switch 12 is controlled to form a communication path between the selected line and the cordless telephone 3 (step S131). When the end of the call is detected (step S132), a line disconnection process is performed (step S133), and the process ends.

When the response of the other party cannot be detected in step S127, and when it is detected that the cordless telephone 3 has been disconnected (step S128), the line is disconnected (step S133), and the process is terminated.

Next, the control unit 30 of the cordless telephone 3
Will be described when it is determined that “response” is selected in step S107. This is, for example, an operation for responding to a specific line that has been verbally announced and held. That is, if it is determined in step S107 that “response” has been selected, the control unit 30 of the cordless telephone 3
Dials the special number of the link data of the line selected in step S106 and makes a call (step S110).

In the exchange 1, when the line control unit 14 detects the special number of the link data of the selected line from the cordless telephone 3, the line control unit 14 detects it as an incoming call response in the cordless telephone 3 (step S129), and switches. The switch 12 is controlled to form a communication path between the selected line and the cordless telephone 3 (step S131). Thus, the user of the cordless telephone 3 can talk with the caller. When the line control unit 14 detects the end of the call (step S1)
32), a line disconnection process is performed (step S133),
The process ends.

The control unit 30 of the cordless telephone 3
However, if it is determined in step S107 that a process other than “outgoing” or “incoming” has been selected, the control unit 30 executes a control process so as to perform the selected process (step S113). Then, the details are omitted.
Also in the exchange 1, if it is determined in step S129 that an instruction for a process other than the incoming call response has been issued by the cordless telephone 3, the corresponding process is performed (step S130), but the details are omitted here. .

The control unit 30 of the cordless telephone 3 has been described above.
And the line control unit 14 and the Web server unit 15 of the exchange 1
The operation is mainly described, but the calling operation and the incoming operation including the user operation will be further described so that this embodiment can be understood more.

[Calling Operation from Cordless Telephone 3] The operation of the cordless telephone 3 when a user selects a line to make a call will be described step by step.

(1) The user operates the cordless telephone 3 to start a browser.

(2) The control unit 30 of the cordless telephone 3 that has detected the activation operation of the browser automatically dials the extension number of the Web server unit 15. Then, the dial data from the cordless telephone 3 is transmitted from the base station interface 13 to the line controller 14 via the wireless base station.

(3) The line control unit 14 connects the cordless telephone 3 and the Web server unit 15.

(4) The Web server unit 15 includes the line control unit 1
An HTML file to be displayed on the display screen of the cordless telephone 3 is generated from the latest line status information obtained from the terminal 4 and transmitted to the cordless telephone 3. This HT
In the ML file, link data relating to each of a plurality of lines displayed on the cordless telephone 3 is also embedded. The link data in this case is a special number for the exchange 1.

(5) The cordless telephone displays the line status of the HTML file received from the Web server unit 15 on the screen of the LCD 38 with a browser.

(6) Cordless telephone user (caller)
Selects a free line from among a plurality of lines displayed on the screen of the LCD 38, and performs a calling operation by adding a dial for calling subsequent to the line selection.

(7) The cordless telephone adds a special number of the link data of the line selected by the user and makes a call using the dial entered by the user.

(8) The line control unit 14 of the exchange 1 executes a call from the line selected by the special number of the link data sent from the cordless telephone, controls the exchange switch, and connects the line with the cordless telephone. Form a call path.

[Receiving operation] In general, a cordless telephone does not perform a verbal transfer, so it is not necessary to select a line when receiving a call and respond. When responding to a line on hold, the following is performed.

(1) You are told to respond verbally to a specific line.

(2) The user told to respond is
The user operates the browser on the cordless telephone 3.

(3) The control unit 30 of the cordless telephone 3 that detects the operation of starting the browser automatically dials the extension number of the Web server unit 15. Then, the dial data from the cordless telephone 3 is transmitted from the base station interface 13 to the line controller 14 via the wireless base station.

(4) The line control unit 14 connects the cordless telephone 3 and the Web server unit 15.

(5) The Web server unit 15 includes the line control unit 1
An HTML file to be displayed on the display screen of the cordless telephone 3 is generated from the latest line status information obtained from the terminal 4 and transmitted to the cordless telephone 3. This HT
In the ML file, link data relating to each of a plurality of lines displayed on the cordless telephone 3 is also embedded. The link data in this case is a special number for the exchange 1.

(6) The cordless telephone displays the line status of the HTML file received from the Web server unit 15 on the screen of the LCD 38 with a browser.

(7) The user of the cordless telephone has an LCD
From the plurality of lines displayed on the screen 38, a verbally transmitted line is selected, and a response is selected.

(8) The cordless telephone dials out a special number of the link data of the line selected by the user.

(9) The line control unit 14 of the exchange 1 controls the exchange switch according to the special number of the link data sent from the cordless telephone to form a communication path between the selected line and the cordless telephone. .

According to the embodiment described above, the Web server unit 15 of the exchange 1 uses the latest number of accommodated telephone lines managed by the line control unit 14 and the cordless information from the information on the use status of those lines. An HTML file to be displayed on the display screen of the telephone 3 is generated, and the HTML file is sent to the cordless telephone 3. The cordless telephone 3 that has received the HTML file displays a display screen of the line status transmitted from the Web server unit 15 by the browser function. The user can make a call or answer a call by selecting a line from this display screen.

As described above, the display information of the number of lines accommodated in the exchange 1 and the latest line status of the use state of those lines generated by the Web server unit 15 are sent to the cordless telephone, and the display is performed. Since the telephone function is displayed on the screen and the telephone function can be realized from the display screen, it is not necessary to re-develop the cordless telephone 3 even when the number of lines accommodated in the exchange 1 increases.

[Other Embodiments] When the cordless telephone 3 composed of a PHS telephone terminal has a function compatible with Java (registered trademark), the cordless telephone 3 uses We
By downloading a Java (registered trademark) program (applet) from the server unit 15 and activating the program, it is possible to facilitate operability and flexibly add extended system functions. .

For example, in the above embodiment, when the browser is started on the cordless telephone, the Web server 1
5 (this dial-up corresponds to a cordless telephone dialing an extension number of the Web server unit 15; the same applies hereinafter) to acquire an HTML file and display a screen of the line status on the display screen. However, by downloading the Java (registered trademark) program from the Web server unit 15 and starting it, the terminal dials up to the Web server unit 15 at regular intervals to obtain the latest line status information. And the latest line status is always displayed on the browser screen. In that case, with a cordless phone,
The same operation function as that of the conventional wired key telephone can be obtained.

Also, by downloading a Java (registered trademark) program for reproducing so-called multimedia data, a ring tone or a melody is changed depending on the line that has arrived, so that it is easy to identify which line has arrived. can do.

Also, in the above-described embodiment, the example in which an outside line is transmitted has been described. However, as shown in FIG. 6A, an "extension" is provided in a start menu including a line status display screen. By selecting it, an extension call between the cordless telephones 3 can be made.
By using the b server unit 15 and the browser function of the cordless telephone 3, it is possible to easily perform the operation of calling the extension.

That is, in this case, in the exchange 1, extension identifiers of a plurality of cordless telephones are registered, for example, under the name of the user of each cordless telephone. The memory unit of the Web server unit 15 of the exchange 1 holds information on the personal name as the extension identifier.

Further, the line control unit 14 can use the Web server unit 15 not only for the external line but also for the use state of the internal line.
And communicate it every time it changes.

On the other hand, on the display screen of the cordless telephone 3,
When the user selects “extension”, the cordless telephone 3
Dials up the Web server unit 15 and requests acquisition of display information of “extension list”.

In the exchange 1 which has received the request to acquire the display information of the “extension list”, the line controller 14 connects the cordless telephone 3 to the Web server 15 and then
The b server unit 15 transmits the HTML file of the “list of extensions” to the cordless telephone 3 that has requested. The HTML file of this “extension list” includes the extension number of the extension indicated by each individual name as link data.

HTML acquired from Web server unit 15
The cordless telephone 3 that has received the file of the “extension list” in the format opens the HTML file by the browser function and displays the “extension list” on the screen of the LCD 38. FIG. 6B is an example of the “extension list” screen, in which a list of personal names of the users of the cordless telephone 3 is displayed. In FIG. 6B, the underlined personal name indicates that the user's extension is in use.

The user of the cordless telephone 3 designates the other party who wants to make an extension call from the extension list screen by selecting and specifying the individual name. Then, the cordless telephone 3 dials the extension number as the link data of the personal name selected and designated.

This transmission signal is received by the line controller 14 via the radio base station 2 and the base station interface 13. The line control unit 14 controls to generate a communication path with the other party's cordless telephone based on the received extension number. This allows extension calls.

According to the above configuration in the case of extension transmission, there is an effect that it is not necessary to register an extension number and an extension personal name for each cordless telephone 3. Further, even if the configuration of the extension is changed, there is an effect that only registration and setting to the exchange 1 are changed, and registration to the cordless telephone as an extension telephone and change of setting are not required at all.

The Web server unit 15 of the exchange 1
By using the browser function of the cordless telephone 3, even if it is an additional function realized by the complicated operation procedure of the function button in the conventional key telephone, it can be executed only by selecting from the menu on the browser screen. You can also.

For example, as shown in FIG. 7A, the start menu on the browser screen of the cordless telephone 3
An item “special” is provided. This "special"
When the cordless telephone 3 is selected, the "extension"
In the same manner as in the case of, the dial-up is automatically performed to the Web server unit 15 to connect to the Web server unit 15, and
A list of special functions in HTML file format is received from the server unit 15 and displayed on the screen of the LCD 38 as shown in FIG.

The user of the cordless telephone 3 selects and specifies a desired function from the special function list menu. Then, the selection of the function is specified by the Web server unit 15.
And the Java (registered trademark) program is downloaded from the Web server unit 15 to the cordless telephone 3 as necessary, and the selected and designated function is realized.

In the above description of the embodiment, the We
The server 15 sends an HTML file for displaying the line status to the cordless telephone 3 when a request from the cordless telephone 3 is sent. Each cordless telephone 3 is called and connected to the Web server unit 15,
An ML file may be sent. At this time, in the cordless telephone, the browser is started by a call from the exchange 1. In addition, the call of each cordless telephone 3 from the exchange 1 can be an extension transmission from the Web server unit 15 as one extension.

[0082]

As described above, according to the present invention, a web server function is provided in an exchange and a cordless telephone having a browser function is used, so that even if the number of lines accommodated in the exchange increases, There is no need to re-develop the cordless telephone, and a digital cordless telephone system that can make and receive calls while always keeping track of the latest line conditions can be realized.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a digital cordless telephone system according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of an example of a cordless telephone.

FIG. 3 is a flowchart for mainly explaining a calling and receiving operation in the cordless telephone according to the embodiment.

FIG. 4 is a flowchart for explaining an operation in the exchange corresponding to an operation in the cordless telephone of FIG. 3;

FIG. 5 is a diagram showing an example of a browser screen of the cordless telephone.

FIG. 6 is a diagram showing another example of the browser screen of the cordless telephone.

FIG. 7 is a diagram showing another example of the browser screen of the cordless telephone.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 switch 2 wireless base station 3 cordless telephone 11 line interface 12 exchange switch 13 base station interface 14 line control unit 15 web server unit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04Q 7/38 H04B 7/26 109T F term (reference) 5K015 AB01 GA06 5K024 AA71 CC11 FF01 5K027 AA12 BB01 CC08 EE00 FF02 FF22 5K049 BB04 BB16 FF41 KK02 KK12 5K067 AA21 BB08 BB44 DD11 DD13 DD23 DD57 EE02 EE10 EE16 FF02 FF23 GG01 GG11

Claims (5)

[Claims] An exchange capable of accommodating a plurality of telephone lines, a cordless telephone, and a wireless base station connected to the exchange for performing wireless communication between the exchange and the cordless telephone; A line controller for recognizing the number of telephone lines accommodated by the exchange, and controlling and managing the use state of the accommodated telephone lines, and transmitting from the line controller. A web server unit for generating the line status display data from the line status information including the number of the telephone lines to be used and their use state information, and sending the display data to the cordless telephone. The telephone includes a display element and a telephone line accommodated on the screen of the display element based on the display data of the line status transmitted from the Web server unit. Browser means for displaying the line status of, and operating means for at least selecting a line from a line status screen of the accommodated telephone line displayed on the display element, Multi-line digital cordless telephone system. 2. The cordless telephone according to claim 1, further comprising:
2. The multi-line digital cordless telephone system according to claim 1, wherein data for displaying the line status of the accommodated telephone line is obtained by making a request to an eb server unit. 3. A request for acquiring data for displaying the line status of the accommodated telephone line to a Web server unit of said exchange is sent to said exchange when said browser means is started. The multi-line digital cordless telephone system according to claim 1. 4. It is possible to accommodate a plurality of telephone lines and
sending, from a switch having an eb server function, line status display data including information on the number of telephone lines accommodated and their use to a cordless telephone having a browser function through a radio base station; With the browser function, the display data of the line status of the telephone line accommodated in the exchange is displayed on the display screen, and the display data of the line status of the accommodated telephone line is selected on the display screen. The telephone line selection information and the information based on the calling operation or the incoming call response operation are sent to the exchange through the radio base station, and the exchange receives the information from the cordless telephone and receives the selected line and the cordless telephone. A multi-line digital cordless telephone method characterized by forming a communication path between the telephone and the telephone. 5. When the cordless telephone activates the browser function, the cordless telephone requests the exchange to acquire data for displaying the status of the plurality of telephone lines, and the exchange receives the acquisition request. 5. The multi-line digital cordless telephone method according to claim 4, wherein when the call is made, display data of the status of the plurality of telephone lines is sent to the cordless telephone.