JP4433188B2 - Wireless communication terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless communication terminal having low power consumption and less restriction in forming multiple lines, which is wirelessly connected to a main apparatus unit capable of housing a plurality of communication lines and performs communication and is driven on a battery. <P>SOLUTION: The communication terminal is provided with a display means for indicating a plurality of symbols each corresponding to each of a plurality of communication lines on a display screen; and a means for receiving information about changes in states of the plurality of communication lines from the main apparatus unit and analyzing the received information, recognizing a communication line having a change in state among the plurality of lines and detecting a state after change and updating a line state stored and maintained in a line state storage and maintaining means 324 on the basis of a result of detection. When a selection operating means 317 selects symbols displayed on the display screen, the line state of the communication line correcting to each of the symbols is displayed in detail on the basis of information about the line state stored in the maintaining 324. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

  The present invention is suitable for application to, for example, a so-called business phone telephone terminal, and more particularly to a wireless communication terminal that is wirelessly connected to a main unit using a wireless LAN.

  A button telephone system is popular as a business phone. In general, the key telephone terminal used in this key telephone system is not only a numeric keypad for dialing, but also a plurality of external keys set corresponding to each of a plurality of telephone lines accommodated by the main unit, A plurality of operation keys such as a plurality of function keys whose functions can be freely set (hereinafter, these operation keys are referred to as flexible keys) are provided.

  And in a button telephone terminal, it is set as the self-lighting type | mold which each equipped with LED (Light Emitting Diode; Light emitting diode) inside a flexible key, or LED is arrange | positioned in the vicinity of each flexible key, and the use condition is changed. The LEDs are displayed in a distinguishable manner depending on the lighting, extinguishing, blinking, and emission color of the LEDs.

  For example, in the case of a flexible key (external line button) with an external line set, the line status of the corresponding telephone line in use, available, on hold, incoming call, etc., LED lighting, off, flashing, emission color By displaying these differently, the user can operate these external line buttons to support the user who captures the corresponding telephone line (for example, Japanese Patent Application Laid-Open No. 64-82732). Gazette), patent document 2 (Japanese Patent Laid-Open No. 63-242096), and patent document 3 (Japanese Patent Laid-Open No. 5-227263).

The above-mentioned patent documents are as follows.
Japanese Patent Application Laid-Open No. 64-82732 Japanese Patent Laid-Open No. 63-242096 JP-A-5-227263

  By the way, an attempt has been made to construct a business phone system as described above using a wireless LAN (Local Area Network). A wireless communication terminal as a wireless telephone terminal used in a business phone using this wireless LAN operates with a battery. If a plurality of flexible keys and LEDs are provided in the wireless telephone terminal as in the conventional case, the following is performed. The following problems arise.

  The power consumption of the LED is relatively large, and if a plurality of flexible keys are provided corresponding to a plurality of flexible keys, the power consumption increases by the number, the battery consumption is large, and it is impossible to wait for a long time. In particular, when the flexible key is an external line button, in general, the fact that the other terminal is in use is displayed by the lighting of the LED, and the other terminal is used even if the own terminal is not used. As a result, the LED is turned on and power is consumed, so that there is a problem that the usable time without charging becomes very short.

  In the case of the above-mentioned Patent Document 3, a method is shown in which the LED is turned on by some trigger and turned off after a predetermined time has elapsed to reduce power consumption. If the method of this patent document 3 is applied, when a radio telephone terminal is not used, it is possible to turn off the LED so as not to waste power.

  However, in the method of Patent Document 3, it is said that the actual line state or the like at that time cannot be confirmed unless the latest line state or the like is obtained and updated by operating or communicating when actually used. There's a problem. For this reason, the use display of the other terminal corresponding to the outside line button is not correctly performed, and if the outside line button that the user wishes to use is pressed, a situation may occur that the other terminal is in use.

  In addition, since wireless telephone terminals are required to be small and light, when the number of accommodated lines increases or the number of setting functions increases, the required number of flexible keys are installed on the panel surface of the wireless telephone terminal. There is also a problem that the number and function of accommodation lines of business phones are limited.

  In view of the above, the present invention communicates by being wirelessly connected to a main unit capable of accommodating a plurality of communication lines, and consumes power as a wireless communication terminal driven by a battery. An object of the present invention is to provide a device that has few restrictions on the number of lines.

In order to solve the above problems, a wireless communication terminal according to the present invention provides:
In a wireless communication terminal that is wirelessly connected to a main unit that can accommodate a plurality of communication lines and is driven by a battery,
Display means for displaying a plurality of symbols corresponding to each of the plurality of communication lines on a display screen;
Line state storage and holding means for storing and holding each line state corresponding to each of the plurality of symbols displayed on the display screen;
Receiving and analyzing information about a change in the state of a plurality of communication lines from the main unit, and knowing the communication line in which the state has changed among the plurality of communication lines, and the state after the change Means for detecting and updating the line state stored and held in the line state storage holding unit based on the detection result;
A selection operation means for allowing a user to select a desired symbol from the plurality of symbols on the display screen;
When the symbol is selected by the selection operation means, the line status of the communication line corresponding to each of the symbols is displayed in detail based on the line status information stored in the line status storage holding means. Control means to do and
Equipped with a,
The selection operation means can select the plurality of symbols in units of a group of a plurality of symbols,
The control means is characterized in that when the plurality of symbols are selected in the group unit, detailed information on the line state of each symbol included in the group is displayed in a list .

  According to the present invention having the above-described configuration, for example, a plurality of symbols corresponding to each of a plurality of communication lines are displayed on the display screen of a display means such as an LCD, and the displayed symbols are selected. Thus, the line status of the corresponding line can be displayed in detail.

  According to the present invention, a symbol indicating a line is displayed on a low power consumption display means such as an LCD without using an LED, and the line state can be easily known by selecting the symbol. Therefore, it can be used for a long time without power consumption and charging. Moreover, even if the number of lines and functions increase, it can be easily handled by simply increasing the number of symbols displayed on the display means. In this case, even if the display screen is small, scroll display can be performed, so that a large number of symbols can be provided.

  Hereinafter, an embodiment of a wireless communication terminal according to the present invention will be described with reference to the drawings, taking as an example the case of use in a business phone system.

  FIG. 1 is a block diagram showing an example of the overall configuration of a business phone system in which an embodiment of a wireless communication terminal according to the present invention is used. The wireless LAN in this example conforms to the IEEE 802.11 standard, and all information is transmitted and received in packets, in addition to the voice information and information for call control. In this example, the embodiment of the wireless communication terminal according to the present invention is configured as a packet telephone.

  The business phone system of this example includes a main device unit 1 and a plurality of packet telephones 2 wirelessly connected to the main device unit 1 through a wireless LAN 3.

  The main unit 1 includes a wireless LAN access point device 10 (hereinafter simply referred to as an access point device), a server device 12, and a gateway 13. The access point device 10 is connected to the server device 12 through the wired LAN 11.

  In the case of the business phone system of this example, the server device 12 also serves as a telephone communication relay / switching device. The server device 12 serves as an external network through the gateway 13, and in this example, a public switched telephone network (PSTN). Network) 14 is also connected. The external network includes the Internet.

  In this example, the main unit 1 can accommodate a plurality of lines for telephone communication, and the server apparatus 12 has identification information (for example, a line number) for each accommodated telephone communication line. Is given and managed. For example, when there is an incoming call on a certain line, the server device 12 notifies the incoming call notification to all the packet telephones 2 through the access point device 10 together with the identification information of the incoming line.

  The packet telephone 2 detects from which line the incoming call is received from the line identification information included in the incoming call notification, and displays an incoming call notification for the incoming line as described later.

  Also, the line acquisition request from the packet telephone 2 to the main unit 1 is added with the identification information of the line requesting the line acquisition. The server apparatus 12 detects which line the acquisition request is made from the added line identification information, and performs acquisition processing.

  To the access point device 10, a wireless LAN terminal side station device section (hereinafter simply referred to as a station device section) 20 built in each of the plurality of packet telephones 2 is connected by a wireless link. A wireless link formed between the access point device 10 and the plurality of station device units 20 constitutes a wireless LAN 3.

  In this example, in each packet telephone 2, the station device unit 20 is connected to the telephone unit 30. Further, in this example, the packet phone 2 is configured to use a rechargeable battery 40 as a power source, for example, and when not communicating for power saving, It is configured to repeat the intermittent reception state at a constant cycle.

  The server device 12 manages address information on the wireless LAN 3 for each of the packet telephones 2 connected to the wireless LAN 3 via the station device unit 20. Then, the server device 12 manages a communication path for telephone communication through the wireless LAN 3. For example, for each of a plurality of telephone lines connected to the external network 4, the server apparatus 12 connects another telephone terminal through the telephone line, the access point apparatus 10, and the packet telephone 2 through the wireless LAN 3. Communication control and management of inter-calls (external line calls).

  In addition, the server device 12 uses the address information managed by the wireless LAN 3 and the server device between any one of the plurality of packet phones 2 and the other packet phone 2. Communication control and management for extension calls through 12 are also performed.

  For example, when an incoming call is received from the other party to any of a plurality of telephone lines through the external network 4, the server device 12 receives an incoming notification packet (incoming notification information, (Including the identification information of the line that received the incoming call) is sent to the access point apparatus 10 by multicast.

  In this example, the access point device 10 determines that the incoming notification packet is an important packet, converts the incoming notification packet into a unicast packet, and transmits the unicast packet through the wireless LAN 3 to the station device unit of the subordinate packet telephone 2. Send to all 20.

  Each of the station devices 20 transfers the incoming call to the telephone unit 30 of the packet telephone 2. The telephone unit 30 notifies the user of the packet telephone 2 of the incoming call, for example, by ringing a bell, and displays that the incoming line has arrived on the line based on the received line identification information as described later. Inform the user.

  When a user of one of the packet telephones 2 responds to the incoming call, the response message is transmitted from the packet telephone 2 that has made the response to the access point apparatus 10 through the station apparatus unit 20 and the wireless LAN 3.

  The access point device 10 sends this response to the server device 12, and the server device 12 sends this response to the external network 4 through the gateway 13 and the incoming telephone line to notify the other party. As a result, a call path through the wireless LAN 3 is formed, and voice packets are transmitted through the wireless LAN 3 to make a call.

  When any user of the plurality of packet telephones 2 captures one of the plurality of telephone lines and makes a call operation, the call is received by the other party of the call through the reverse route. If the calling party answers, a call path through the wireless LAN 3 is formed, and a voice packet is transmitted through the wireless LAN 3 to make a call.

  The server device 12 manages the communication path generated by the incoming call response as described above and the communication path generated by the outgoing call, and the telephone line on which the communication path is generated through the wireless LAN 3. The state information is generated as a line state notification packet for all of the packet telephones 2 and sent to the access point device 10 as a multicast packet.

  In this example, the access point device 10 determines that the line state notification packet (including the incoming call notification packet) is an important packet and unicasts the line state notification packet, which is a multicast packet. The packet is converted into a packet and sent to all the packet telephones 2 under its control through the wireless LAN 3 through the station device unit 20. Each of the packet telephones 2 that has received the line state notification packet analyzes the notification packet, as will be described later, and the other terminal receives an incoming call display or the communication line as described later according to the analysis result. Inform the user by displaying the outside line in use.

  The call voice packet is a packet for designating a specific destination and is a unicast packet. Needless to say, the information sent by multicast is not limited to the incoming packet as described above or the line state notification packet.

  In this embodiment, even if the packet is a multicast packet, such as a packet for notifying a line state such as an incoming call or when an external line is in use, a packet to be surely reached by the packet telephone 2 is an important packet. Differentiate from multicast packets.

  In this embodiment, insignificant multicast packets are sent as they are to the wireless LAN 3 by multicast. However, as described above, the important packets are transmitted to all the packet telephones 2 under the access point device 10 as described above. It is converted into a unicast packet addressed to the station device unit 20 of the mobile station so that all packet telephones 2 can be surely reached.

  The access point device 10 mainly relays transmission / reception of packets between the server device 12 and the station device unit 20 of the packet telephone 2. In this embodiment, the above point is realized. In addition to the packet transmission / reception relay function, the following processing functions are provided for the function of converting the above-described multicast packet into a unicast packet.

  That is, the access point device 10 has a function of identifying whether a packet is a multicast packet or a unicast packet, a function of discriminating the type of packet, the type of data transmitted / received by the packet, and the like from the server device 12. When a multicast packet is received, if the packet type or data type is a specific type of packet or data determined in advance as important, the multicast packet received from the server device 12 is converted to a unicast packet. The function to convert to.

  The access point device 10 manages addresses and port numbers of a plurality of subordinate station devices 20 (and thus each packet phone 2) connected through the wireless LAN 3, and converts multicast packets into unicast packets. When this is done, the management data is used to generate unicast packets for all subordinate station device units 20 under management, and send them to all subordinate station device units 20.

  In this embodiment, since the packet telephone 2 performs intermittent reception, when the packet telephone 2 is in the standby state, the access point device 10 cannot obtain the reception confirmation information for the unicast packet, and the unicast packet is It becomes an undelivered unicast packet.

  The undelivered unicast packet can be reliably transmitted to the destination packet telephone 2 through the station device unit 20 by using an undelivered notification method compliant with the IEEE 802.11 standard.

  Next, a detailed configuration example and operation example of the packet telephone 2 including the access point device 10 and the station device unit 20 configuring the wireless LAN system of this embodiment will be described.

<Hardware Configuration of Access Point Device 10>
FIG. 2 is a block diagram illustrating a hardware configuration example of the access point device 10 of the main device unit 1.

  The access point device 10 in this example includes a control unit 101 made of, for example, a microcomputer, a wired LAN interface (in the figure, the interface is described as I / F; the same applies hereinafter) 102, a transmission processing circuit 103, and a reception process. The circuit 104 includes a transmission amplifier 105, a reception amplifier 106, an antenna switching circuit 107, a transmission / reception antenna 108, and a transmission / reception antenna 109.

  In this example, the wired LAN interface 102 is connected to the server device 12 through the wired LAN 11. The two transmission / reception antennas 108 and 109 constitute a diversity antenna and are used for transmitting and receiving packets through the wireless LAN 3.

  In the access point device 10, a transmission packet from the server device 12 obtained through the wired LAN interface 102 is transmitted / received via the transmission processing circuit 103 and the amplifier 105 and the antenna switching circuit 107 in accordance with the control of the control unit 101. The signal is supplied to one of the antennas 108 and 109 and wirelessly transmitted to the station apparatus unit 20.

  A packet from the station apparatus unit 20 received through one of the transmission / reception antennas 108 and 109 is supplied to the reception processing circuit 104 through the antenna switching circuit 107 and the amplifier 106. The packet from the reception processing circuit 104 is supplied to the control unit 101. The control unit 101 sends the received packet to the server device 12 through the wired LAN interface 102 and the wired LAN 11.

  The control unit 101 is configured by a microcomputer, and has, for example, a block configuration as shown in FIG. That is, with respect to a CPU (Central Processing Unit) 110, a ROM (Read Only Memory) 112, a RAM (Random Access Memory) 113, a packet decomposition / generation unit 114, and wireless terminal information management via a system bus 111. Unit 115, reception buffer 116, transmission buffer 117, beacon generation unit 118, transmission mode determination unit 119, information type determination unit 120, and transmission information generation unit 121 are connected.

  Although omitted in FIG. 2, the control unit 101 also includes a port connected to the wired LAN interface 102, a transmission processing circuit 103, a port for exchanging control information and transmission / reception information with the reception processing circuit 104, and the like. Is.

  The packet decomposition / generation unit 114 decomposes the packetized data captured by the interface 102, separates the packet header, transfers the packet header data to the transmission mode determination unit 119 and the information type determination unit 120, and packetizes the data to be transmitted. A packet data to be transmitted. The packet decomposing / generating unit 114 includes a buffer memory for decomposing and generating packet data.

  The wireless terminal information management unit 115 stores and manages the address information and the port number of the station device unit 20 of the subordinate packet telephone 2 connected through the wireless LAN 3.

  The reception buffer 116 is for temporarily storing packet data received through the wired LAN interface 102 and packet data received from the wireless LAN 3.

  The transmission buffer 117 includes a transmission queue that sequentially stores, as a queue, packets to be sent to the packet telephone 2 for each of the subordinate packet telephones 2 (station device unit 20). Undelivered packets that have not been sent to the packet telephone 2 are registered in the respective transmission queues.

  The beacon generating unit 118 mainly searches for a specific radio wave used for the station device unit 20 to search the access point device 10 and register its own device in the access point device 10, that is, a beacon at a certain period, for example, The generated beacon is packetized by the packet disassembly / generation unit 114 and transmitted to the wireless LAN 3 at a cycle of 100 milliseconds.

  Then, when there is an undelivered packet in the transmission buffer 117, the beacon generation unit 118 sends information notifying that there is an undelivered packet to the station device unit 20 of the packet telephone set 2 with the undelivered packet. Generate a superimposed beacon. The station device unit 20 knows that there is an undelivered packet addressed to itself by receiving the beacon in intermittent reception.

  In this example, the transmission mode discrimination unit 119 discriminates whether the packet is multicast or unicast by identifying address information included in the packet header. That is, as the address information of the packet header, one for unicast and one for multicast are determined in advance. For example, address information for multicast is stored in the transmission mode determination unit 119. Accordingly, the transmission mode determination unit 119 recognizes the address information of the packet header, and recognizes whether the packet is a multicast packet or a unicast packet by comparing the recognized address information with the stored address information. can do.

  In this example, the information type determination unit 120 determines the data type or the packet type by recognizing the port number included in the packet header. That is, the port number is determined in accordance with TCP / IP (Transmission Control Protocol / Internet Protocol), and is different for each type of data such as voice information, data, and control information, or for each type of packet. Port number is assigned. The user can also assign packet types and data types such as incoming call notifications and other line status notifications such as busy or on hold to undefined port numbers.

  In view of this, in the information type determination unit 120 of this embodiment, for example, information on important multicast packets such as notification of incoming calls, notification of line status such as other in use or on hold, etc. are assigned port numbers assigned to them. Recognizing the port number included in the packet header of the received multicast packet and comparing the recognized port number with the stored port number, the received multicast packet is, for example, an incoming notification It is determined whether or not the packet is an important information packet such as a packet status notification packet.

  The transmission information generation unit 121 normally uses a packet received through the wired LAN interface 102 as it is as transmission information. However, the packet received by the transmission mode determination unit 119 from the server device 12 through the wired LAN interface 102 is a multicast packet, and in this embodiment, the information type determination unit 120 uses an important notification such as an incoming call notification or lamp information. When it is determined that the packet is an information packet, the multicast packet is converted into a unicast packet and transmitted.

  At this time, as described above, the transmission information generation unit 121 searches the wireless terminal information management unit 115 for one multicast packet, and a plurality of transmission information generation units 121 for all the station device units 20 of the subordinate packet telephones 2 are searched. Generate a unicast packet.

  Note that the determination function of the beacon generation unit 118, the transmission mode determination unit 119, and the determination function of the information type determination unit 120 are software performed by the CPU 110 using the RAM 113 as a work area based on a software program stored in the ROM 112. It can be a process.

<Hardware Configuration of Station Device 20 of Packet Telephone 2>
The basic hardware configuration of the station device unit 20 is almost the same as that of the access point device 10. FIG. 3 shows a block diagram of a configuration example of the station apparatus unit 20.

  That is, the station device unit 20 includes, for example, a control unit 201 configured with a microcomputer, a terminal interface 202, a transmission processing circuit 203, a reception processing circuit 204, a transmission amplifier 205, and a reception amplifier 206. The antenna switching circuit 207 and the transmitting / receiving antennas 208 and 209 are provided.

  The terminal interface 202 is connected to the telephone unit 30 in this example. The transmitting / receiving antennas 208 and 209 are for transmitting and receiving packets through the wireless LAN 3.

  The station device unit 20 transmits a packet of a call setting message and a packet of voice communication information from the telephone unit 30 to the access point device 10 through the transmission / reception antenna 208 or 209 through the terminal interface 202. Also, a received packet from the access point device 10 is sent to the telephone unit 30 through the terminal interface 202.

  In this embodiment, the control unit 201 has a block configuration as shown in FIG. That is, a ROM 212, a RAM 213, a packet decomposition / generation unit 214, a reception buffer 215, a transmission buffer 216, and an intermittent reception management unit 217 are connected to the CPU 210 via a system bus 211.

  The packet disassembly / generation unit 214 disassembles packetized data captured through the wireless LAN 3 to obtain control data and audio data addressed to itself, and packetizes control data and audio data transmitted from the terminal interface 202. It has a function of generating packetized data to be transmitted.

  The reception buffer 215 is for temporarily storing packet data received through the terminal interface 202 and packet data received from the wireless LAN 3.

  The transmission buffer 216 temporarily stores packet data to be transmitted, and includes a transmission queue that sequentially accumulates transmission information packets as a queue.

  The intermittent reception management unit 217 executes the intermittent reception state at a constant period when the packet telephone 2 is not communicating, and is in a standby state between the intermittent reception state and the intermittent reception state. Thus, the power consumption of the battery 40 is suppressed. In the standby state, in order to return to the next intermittent reception state, and in response to the user's call operation in the telephone unit 30, the power supply from the battery is supplied only to the part necessary for the packet telephone 2 to stand up and become active. A voltage is supplied, and the current consumption is very small.

  The intermittent reception management unit 217 can control not only the power supply system for the station device unit 20 but also the power supply system of the telephone unit 30 via a CPU 310 (to be described later) of the telephone unit 30. Yes. That is, when the packet telephone 2 is set to the standby state, this is notified to the telephone unit 30 via the terminal interface 202, and when it is activated, the fact is notified via the terminal interface 202. In response to these notifications, the CPU 310 of the telephone unit 30 controls the power supply system of the telephone unit 30 to realize power saving.

  The period for performing intermittent reception is determined according to the target power saving amount. In the case of a wireless LAN, for example, the period for generating beacons generated from the access point device 10 is set to be twice or more. . For example, it is four times the beacon generation period (in this example, 400 milliseconds). Since it is necessary to be able to receive the beacon from the access point device 10 at least once when the packet telephone 2 changes from the standby state to the intermittent reception state, power saving is performed in the same period as the beacon period. It is because it cannot be made.

  In intermittent reception, when a beacon is received from the access point device 10, when it is recognized that a notification indicating that there is an untransmitted packet addressed to the own device is superimposed on the beacon, the station device unit 20 is intermittent. The reception management unit 217 starts up the own packet telephone 2 from the standby state to the active state, and notifies the access point device 10 that the own packet telephone 2 has started up.

  When the access point device 10 receives the notification of the rise of the packet phone 2, the access point device 10 performs unicast transmission of an untransmitted packet addressed to the raised packet phone. In response to this, the station device unit 20 of the packet telephone 2 returns the reception confirmation information to the access point device 10 and notifies the access point device 10 of the reception confirmation. Thereafter, the packet telephone 2 performs processing in accordance with the contents of the exchanged untransmitted packets.

<Hardware Configuration Example of Telephone Unit 30 of Packet Telephone 2>
FIG. 4 shows an example of the internal hardware configuration of the telephone unit 30 of the packet telephone 2 of this embodiment. FIG. 5 shows an example of the general configuration of the packet telephone 2 of this embodiment.

  As shown in FIG. 4, the telephone unit 30 is configured to include a computer. A ROM 312, a RAM 313, a display controller 314, an operation input interface 316, and a CPU 310 are connected to the CPU 310 via a system bus 311. A station interface 318, a packet disassembly / generation unit 319, an audio data input / output interface 320, and a line state storage holding unit 325 are connected.

  In this example, an LCD (Liquid Crystal Display) 315 is connected to the display controller 314. A display screen 315D of the LCD 315 is displayed in accordance with the control of the CPU 310 as described later.

  As shown in FIG. 5, the packet telephone 2 of this embodiment is not provided with a self-illuminating button having a built-in LED, and a plurality of telephone lines accommodated in the main unit 1 are displayed on the display screen 315D of the LCD 315. In this example, a numeric number (becomes a line number) is displayed as a symbol indicating. This display will be described in detail later.

  An operation input unit 317 is connected to the operation input interface 316. As shown in FIG. 5, the operation input unit 317 includes cursor keys including a numeric keypad 51, an up key 52, a down key 53, a left key 54, a right key 55, and an enter key 56, an off-hook key 57, and an on-hook key 58. Including operation keys.

  The CPU 310 recognizes which operation key the user has operated through the operation input unit 317 via the operation input interface 316, and executes processing corresponding to the key input operation according to the program of the ROM 312 based on the recognition result. To do.

  The ROM 312 has a display control program for the LED 63 and the display screen 315D of the LCD 315 according to the line status information received from the main unit 1, a program for executing a processing sequence at the time of outgoing and incoming calls through the wireless LAN 3, and the like. A program for executing the process is stored. The RAM 313 is mainly used as a work area when the program of the ROM 312 is executed by the CPU 310.

  The station interface 318 is connected to the station device unit 20, and has a function of capturing packetized data transmitted through the station device unit 20 and transmitting the packetized data to the station device unit 20.

  The packet disassembly / generation unit 319 disassembles packetized data captured by the interface 318 to obtain line state information, control data, and voice data, and packet that is transmitted by packetizing control data and voice data to be transmitted. Has a function of generating digitized data. The packet decomposition / generation unit 319 includes a buffer memory for decomposing and generating packetized data.

  The packet decomposition processing function and the generation processing function of the packet decomposition / generation unit 319 can also be realized as software by the CPU 310 and the ROM 312.

  The audio data input / output interface 320 converts the audio data obtained by the packet decomposition into an analog audio signal, and supplies the analog audio signal to the speaker 322 constituting the receiver through the amplifier 321. In addition, a transmission voice signal from a microphone 323 as a transmitter is supplied to the voice data input / output interface 320 through an amplifier 324. The voice data input / output interface 320 converts the transmitted voice signal into a digital voice signal and supplies it to the packet decomposition / generation unit 319 for packet generation through the system bus 311.

  In FIG. 5, 61 is a hole for emitting sound from the speaker 322, and 62 is a hole for collecting sound by the microphone 323.

  The line state storage / holding unit 325 stores and holds the line state of the telephone line corresponding to each of the numeric numbers as symbols indicating the plurality of telephone lines accommodated in the main unit 1. The line state storage / holding unit 325 may be a part of the RAM 313.

[Display of packet phone 2 line status, etc.]
As described above, in this embodiment, a flexible key incorporating an LED is not provided at all. In this example, a numeric number consisting of two digits is provided on the screen 315D of the LCD 315 as a symbol corresponding to a plurality of flexible keys. (Hereinafter referred to as flexible key display) is displayed. In the example of FIG. 5, a total of 24 flexible key displays of “01” to “24” are displayed on the screen 315D of the LCD 315.

  It should be noted that the flexible key display shown in the figure is an example, and the present invention is not limited to this. Further, it is not necessary to display all the flexible key displays at once on the display screen 315D, and it is of course possible to provide more flexible key displays by scrolling with the up and down keys and the left and right keys.

  In the packet telephone 2 of this embodiment, for example, the up key 52 is also used as a menu display key. By operating the up key 52, while looking at the menu displayed on the display screen 315D, The user operates the cursor keys such as the up key 52, the down key 53, the left key 54, and the right key 55, or a part of the numeric keypad 51 to display each flexible key indicated by these numeric numbers. The telephone line and various functions can be set in advance.

  For example, in this example, the main apparatus unit 1 can accommodate 10 lines, and each of these 10 lines is set in the flexible key display of numeric numbers “01” to “10”. Shall. In this example, functions such as one-touch dialing, shortening, and redialing can be set for flexible key display of numeric numbers from “11” to “24”.

  Then, as will be described later, when the packet telephone 2 receives an incoming notification packet, a line status notification packet, or the like from the main unit 1, it decodes and analyzes them, and the line included in the notification packet In accordance with the identification information, which line state of the plurality of lines accommodated in the main unit 1 has changed, the change in the line state is detected, and the detection result is stored in the line state storage holding unit 325. Stores and retains corresponding to flexible key display.

  With respect to the flexible key display corresponding to the line in which the change is detected, a predetermined display change is performed according to the line state after the change to notify the user of the line state.

  In this example, as a predetermined display change according to the line state after the change, a symbol is additionally displayed on the left side of the numeric number of the flexible key display. As an additional display of this symbol, in this example, an alphabetic initial letter indicating the line state is additionally displayed with respect to the flexible key display.

  That is, as will be described later, in this example, when a line is in use, a letter “B” is additionally displayed on the left side of the flexible key display corresponding to the line. The additional display disappears. In addition, when a line is received, a letter “R” is additionally displayed on the left side of the flexible key display corresponding to the line, and when a person responds and is in use, a letter “B” is additionally displayed. To change. When the line is put on hold, the letter “H” is additionally displayed. When the hold is released, the main device unit 1 sends the line status in use. The additional display changes to the additional display of the letter “B”.

  Then, the upper key 52, the lower key 53, the left key 54, the right key 55, and the enter key 56 are operated by the user so that each of these flexible key displays can be selected.

  In this example, for the flexible key display being selected on the display screen 315D, for example, the cursor display 70 by an underbar is displayed below the numeric number, and the flexible key display of the numeric number is currently selected. This is notified to the user.

  In this example, it is possible to select not only the flexible key display of each numeric number but also the flexible key display group unit in the horizontal direction. FIG. 5 shows that the flexible key display group in units of one line is being selected. In this example, when the up key 52 or the down key 53 is operated, the cursor display 70 moves in the direction indicated by the operated key in units of one line.

  Further, in this example, when the left key 54 or the right key 55 is operated, the cursor display 70 is displayed not for each line but only for the numeric number of one flexible key display so that one The user is informed that the flexible key display is being selected, and moves in the indicated direction of the operated key. If the left key 54 is pressed during the selection display for each line, the flexible key display at the left end of the line is selected, and the right key 55 is displayed during the selection display for each line. When pressed, the flexible key display at the right end of the line is selected.

  When the enter key 56 is operated, details of the line status of the flexible key display being selected are displayed on the display screen 315D, for example, “External line in use”, “Incoming call”, “Pending”, “External line” The display is controlled to be represented by characters such as “empty”.

  At this time, when the flexible key display in units of one line is being selected by the cursor display 70, the line states of the plurality of flexible key displays in the group of one line are displayed. Then, from the detailed display of the line state, the user can select the line state to be operated by, for example, operating the up key 52 and the down key 53, and the decision is made at the selected line state. When the key 56 is operated, the line corresponding to the line state where the determination key 56 is operated is finally selected.

  When each flexible key display is being selected by the cursor display 70, the line status of the selected flexible key display is displayed. When the enter key 56 is operated, the line corresponding to the line state in which the enter key 56 is operated is finally selected.

  At this time, if the line state is an incoming call, the line selection is an incoming call response. If the line status is on hold, the line selection is released. If the line state is in use, selection is not possible. In this example, a warning is issued to the user, and the state before the operation of the enter key 56 is restored.

  In this embodiment, the packet telephone 2 has an incoming call priority mode in which an incoming call can be received with a simple operation by simply operating the off-hook key 57. That is, in the packet telephone 2 of this embodiment, when the incoming line status notification information arrives from the main unit 1 when the incoming call priority mode is set, the cursor display 70 displays the incoming line. And “R” indicating that a call is being received is additionally displayed on the left side.

  In this state, when the user operates the off-hook key 57, the packet telephone set 2 determines that the operation is an incoming call response and sends a message to that effect to the main unit 1. Therefore, an incoming call can be answered with a simple operation.

[Transfer and receive line status notification information and display screen]
Next, processing operations of the server device 12 of the main device unit 1, the access point device 10, and the telephone unit 20 of the packet telephone 2 will be further described with reference to flowcharts.

  First, the operation of the main unit 1 when the line status of any of the accommodated lines changes will be described. FIG. 6 is a flowchart for explaining the operation of the server apparatus 12 of the main apparatus unit 1 at this time.

  That is, the server device 12 always monitors the line states of a plurality of accommodated lines as described above (step S1). Then, in response to an event such as an incoming call through an external line, a call request from the packet telephone 2, a hold request, a hold release request, or the like, it is determined whether or not the line state has changed to any of a plurality of lines ( Step S2) When it is determined that the line state has changed, a multicast packet including the identification information of the line whose line state has changed and the line state after the change is sent as an important packet to the access point apparatus 10 (step S2). S3).

  And if reception of the response ACK from the access point apparatus 10 is confirmed (step S4), it will return to step S1 and will return to the monitoring state of a line state change.

  As described above, in this embodiment, even if the access point device 10 receives important information such as line state change information including an incoming call notification from the server device 12 as a multicast packet, To be sent as individual unicast packets. Thereby, even if the packet telephone 2 is performing intermittent reception, it is possible to notify all of the packet telephones 2 of line state change information.

  Next, the operation of the packet telephone 2 that receives the line state change information from the main unit 1 will be described with reference to the flowchart of FIG. 7 and display examples of the screen 315D of the LCD 315 of FIGS. The processing of each step in the flowchart of FIG. 7 is executed by the CPU 310 of the packet telephone 2 using the RAM 313 as a work area according to a program stored in the ROM 312.

  When all of the plurality of lines accommodated in the main unit 1 are not used and no incoming call is generated, the display screen 315D of the LCD 315 of the packet telephone 2 is as shown in FIG. In this example, at least all of the flexible key displays in which a line is set display only numeric numbers, and the additional display indicating the line state described above is not displayed.

  As shown in FIG. 7, the CPU 310 of the packet telephone 2 always monitors whether or not line state change information has been received from the main unit 1 (step S11). When it is determined that the line state change information has been received from the main unit 1, the CPU 310 analyzes the received line state change information and determines the changed line based on the line identification information. The line state after the change is detected, and based on the detection result, the storage information of the line state storage holding unit 325 stored and held corresponding to the flexible key display corresponding to the line is updated (step S12). .

  Then, as a result of the detection in step S12, the CPU 310 determines what the line state after the change is (step S13). When the CPU 310 determines that the changed line state is in use, the line state changes. “B” is additionally displayed on the left side of the numeric number which is the flexible key display in which the selected line is set (step S14). An example of this additional display is shown for the flexible key display “02” in FIG.

  Further, when the CPU 310 determines that the line state after the change is in use but the use is ended, it is added to the left side of the numeric number which is a flexible key display in which the line whose line state has changed is set. The displayed “B” is deleted (step S15).

  When the CPU 310 determines that the line state after the change is pending, the CPU 310 additionally displays “H” on the left side of the numeric number that is the flexible key display in which the line whose line state has changed is set ( Step S16). An example of this additional display is shown for the flexible key display “10” in FIG.

  When CPU 310 determines that the line state is an incoming call, CPU 310 determines whether the incoming call priority mode is set (step S17). If it is determined that the incoming call priority mode is not set, CPU 310 additionally displays “R” to the left of the numeric number that is the corresponding flexible key display for which the incoming line is set (step S17). Examples of this additional display are shown for flexible key displays “01”, “03”, and “08” in FIG.

  If it is determined in step S17 that the incoming call priority mode is set, the CPU 310 moves the cursor display 70 to the numeric number corresponding to the flexible key display on which the incoming line is set. Then, “R” is additionally displayed on the left side of the numeric number (step S19). A display example of the display screen 315D at this time is shown in FIG. As shown in FIG. 10, at this time, the display screen 315D further displays the incoming character display 71 and the other party's telephone number display 72 together. In this embodiment, when there is an incoming call on any of the plurality of lines of the business phone system, the character display 71 of “incoming call” is displayed on the display screen 315D.

  In this state, when the user operates the enter key 56 or the off-hook key 57, the operation becomes an incoming call response operation (an operation for receiving an incoming call), and can easily receive an incoming call.

  Then, after step S14 to step S18 described above, the process returns to step S11, and the CPU 310 returns to the reception monitoring state of the line state change information.

[Processing such as display control corresponding to user key operation in packet telephone 2]
Next, in the packet telephone 2, display control by the CPU 310 and related control when the user performs key operation input will be described with reference to the flowcharts of FIGS. 11 to 14 and the display examples of FIGS. explain. The processing of each step in the flowcharts of FIGS. 11 to 14 is executed by the CPU 310 of the packet telephone 2 using the RAM 313 as a work area according to a program stored in the ROM 312.

  First, the CPU 310 determines whether or not the up key 52 or the down key 53 has been operated (step S21 in FIG. 11). When it is determined that the up key 52 or the down key 53 has been operated, the selected cursor display 70 is displayed. One line is moved in the direction instructed by the up key 52 or the down key 53 to select all the moved lines (step S22).

  A display example at this time is shown in FIG. For example, when the cursor display 70 is on the top line, the display state when the down key 53 is operated, or when the cursor display 70 is on the third line, the up key 52 is pressed. This is the display state when operated. In this case, the cursor display 70 before the key operation is either in a state in which one line is selected as shown in FIG. 8 or in a state in which one flexible key display is selected. Is the same.

  In the display state of FIG. 15, the CPU 310 determines whether or not the enter key 56 has been operated (step S23). If it is determined that it has been operated, the CPU 310 determines the line status for a plurality of line groups in the selected row. Details are displayed (step S24).

  A display example at this time is shown in FIG. In this example, the number that is the flexible key display of the selected line is displayed vertically, and “external line available”, “incoming external line”, “pending external line”, etc. The line status is explained in detail in characters. Then, as shown in the display example of FIG. 16, the cursor display 70 is in a state of selecting one flexible key display.

  In the display state of FIG. 16, the CPU 310 determines whether or not the up key 52 or the down key 53 has been operated (step S25). When it is determined that the up key 52 or the down key 53 has been operated, the selected cursor is displayed. 70 is moved in the direction instructed by the up key 52 or the down key 53, and the detailed display of the flexible key display after the movement is selected (step S26).

  Then, in this state, the CPU 310 determines whether or not the enter key 56 has been operated (step S27). If it is determined that the enter key 56 has not been operated, the process returns to step S25. In this step S27, it may be determined whether or not the off-hook key 57 is operated instead of the enter key 56.

  If it is determined in step S25 that the upper key 52 or the lower key 53 has not been operated, it is determined whether or not the on-hook key 58 has been operated (step S28). In this example, the operation of the on-hook key 58 is a return key operation. When it is determined that the on-hook key 58 has been operated, the CPU 310 displays the cursor display 70 on all the lines as shown in FIG. The display screen is returned to the selection screen (step S29). Then, the process returns to step S21. If it is determined in step S28 that the on-hook key 58 has not been operated, the CPU 310 proceeds to step S27 and determines whether or not the enter key 56 has been operated.

  If it is determined in step S27 that the enter key 56 has been operated, the CPU 310 determines whether or not the line state of the line corresponding to the selected flexible key display is in use (step S30). . When it is determined in this step S30 that it is in use, the CPU 310 notifies the user of a warning by, for example, generating a warning sound (step S31), and then returns to step S24 to display the display of FIG. Put it in a state.

  If it is determined in step S30 that the line state of the line corresponding to the flexible key display selected and determined is not in use, the CPU 310 determines whether or not the line state is on hold (see FIG. 12 (Step S41), when it is determined that the call is on hold, a hold release process is performed and a transition process to a call state is performed (Step S42). That is, the packet telephone 2 sends a hold release request packet including the identification information of the line to the main unit 1. The server device 2 of the main unit 1 performs processing corresponding to the hold release request for the line indicated by the line identification information, and the line is in use for all packet telephones 2 Send a packet to notify. As a result of the processing in step S42, the display state of the display screen 315D becomes a state during a call.

  As described above, by exchanging information between the packet telephone 2 and the main apparatus unit 1 in the processing in step S42, the main apparatus unit 1 confirms that the line released from hold has been used. All packet telephones 2 are notified. For this reason, the flexible key display corresponding to the line whose hold has been released is changed from the “H” additional display being held to the “B” additional display being used.

  Next, the CPU 310 determines whether or not the call has ended (step S45). When determining that the call has ended, the CPU 310 sends an end-call notification including the identification information of the line that has ended to the main unit 1. The end-of-call process is performed (step S46), and the display screen of the display screen 315D is returned to the normal screen display that displays a plurality of flexible keys (step S47).

  If it is determined in step S41 that the line state of the line corresponding to the flexible key display selected and determined is not on hold, the CPU 310 determines whether or not the line state is an incoming call (step S43). When it is determined that the incoming call is being received, the CPU 310 performs an incoming call response process and a process for shifting to a call state (step S44). Then, the process proceeds to step S45 and subsequent steps.

  As a result of the processing in step S44, the display state of the display screen 315D becomes a state during a call. Then, by exchanging information between the packet telephone 2 and the main unit 1 in the processing in step S44, the main unit 1 informs all the packet telephones 2 that the incoming line is in use. To be notified. For this reason, the flexible key display corresponding to the line that has been displayed during the incoming call is changed from the additional display of “R” during the incoming call to the additional display of “B” during use.

  If it is determined in step S43 that the line state of the line corresponding to the flexible key display selected and determined is not being received, the CPU 310 determines whether or not the line state is an outside line empty state (step S43). S48). When it is determined that the line state is not an empty line state, the CPU 310 performs other processing according to various functions set for the flexible key display selected and determined (step S49). When nothing is set for the flexible key display selected and determined, for example, a warning sound is emitted to notify the user of this.

  When it is determined in step S48 that the line state of the line corresponding to the selected flexible key display is an outside line idle state, the CPU 310 determines whether the off-hook key 57 that is an operation for an outside line transmission operation has been operated. If it is determined whether or not the off-hook key 57 has been operated, a capture request for the line including the line identification information is sent to the main unit 1, and a capture completion notification is received for the request. Then, dial processing is performed, external line transmission processing is performed (step S51), and then external line call processing is performed (step S52). And it progresses to the process after step S45.

  If it is determined in step S50 that the off-hook key 57 has not been operated, the CPU 310 determines whether or not the on-hook key 58 has been operated (step S53). If it is determined that the on-hook key 58 has been operated, the CPU 310 determines that the operation is a return operation. Then, all the lines as shown in FIG. 15 are returned to the display screen in the state where the cursor display 70 selects (step S54). Then, the process returns to step S21. If it is determined in step S53 that the on-hook key 58 has not been operated, the CPU 310 returns to step S50 and returns to determination monitoring whether or not the off-hook key 57 has been operated.

  When it is determined in step S21 in FIG. 11 that the up key 52 or the down key 53 is not operated, or in step S23, it is determined that the enter key 56 is not operated, the CPU 310 determines whether the left key 54 or the right key is operated. It is determined whether or not 55 has been operated (step S61 in FIG. 13).

  When the CPU 310 determines that the left key 54 or the right key 55 has been operated, if the selected cursor display 70 selects one line, it selects one flexible key display from the selected one line state. And the position of the cursor display 70 is moved in the designated direction. If the selected cursor display 70 is in a state of selecting one flexible key display at a time, the position of the cursor display 70 is moved in the instructed direction (step S62).

  A display example at this time is shown in FIG. As described above, when the left key 54 is pressed during the selection display in units of one line, the flexible key display at the left end of the line is selected (the display example in FIG. 17 is in that state). When the right key 55 is pressed during the selection display for each line, the flexible key display at the right end of the line is selected.

  In the display state of FIG. 17, the CPU 310 determines whether or not the enter key 56 has been operated (step S63). When it is determined that the enter key 56 has not been operated, it is determined whether or not the on-hook key 58 has been operated. If it is determined that the on-hook key 58 has not been operated (step S64), the process returns to step S61. If it is determined in step S64 that the on-hook key 58 has been operated, it is determined that the operation is a return operation, and the display screen is returned to the state where the cursor display 70 selects all the lines as shown in FIG. 15 (step S70). Then, the process returns to step S21.

  If it is determined in step S63 that the enter key 56 has been operated, the CPU 310 stores the line state of the line corresponding to the selected flexible key display in the line state storage / holding unit 325. The details are displayed based on the information (step S65).

  A display example of the display screen 315D at this time is shown in FIG. The example of FIG. 18 shows a display example when the enter key 56 is operated when the flexible key display of the number “07” is selected by the cursor display 70.

  Next, the CPU 310 further determines whether or not the enter key 56 has been operated (step S66). If it is determined that the enter key 56 has not been operated, it determines whether or not the on-hook key 58 has been operated (step S67). When it is determined that the on-hook key 58 has not been operated, the process returns to step S66. When it is determined in step S67 that the on-hook key 58 has been operated, it is determined that the operation is a return operation, and all the one line as shown in FIG. 15 is returned to the display screen selected by the cursor display 70 (step S70). Then, the process returns to step S21.

  If it is determined in step S66 that the enter key 56 has been operated, the CPU 310 determines whether or not the line state of the line corresponding to the selected flexible key display is in use of an external line (step S68). . When it is determined in step S68 that the outside line is being used, the CPU 310 notifies the user of a warning by, for example, generating a warning sound (step S69), and then returns to step S63, for example, FIG. Display state.

  If it is determined in step S30 that the line state of the line corresponding to the flexible key display selected and determined is not in use, the CPU 310 proceeds to step S41 in FIG. To do.

  In the routine of FIG. 13, in step S27, it may be determined whether or not the off-hook key 57 has been operated instead of the enter key 56. The detailed display in step S65 is performed in the sense that the user confirms the line status of the selected and determined line. Therefore, depending on the case, the determination step of step S65 and step S66 may be omitted.

  When it is determined in step S61 that the left key 54 or the right key 55 is not operated, the CPU 310 determines whether or not the enter key 56 is operated (step S81 in FIG. 14), and the enter key 56 is also operated. If it is determined that it is not, the process returns to step S21 in FIG.

  If it is determined in step S81 that the enter key 56 has been operated, the CPU 310 determines whether or not the incoming call priority mode is set (step S82), and if it is determined that the incoming call priority mode is not set, It is determined whether the cursor display 70 is in a state of selecting one line of the flexible key display or in a state of selecting one by one (step S83).

  If it is determined in step S83 that the cursor display 70 is in the state of selection of one line of flexible key display, the CPU 310 proceeds to step S24 in FIG. 11 and executes the processing after step S24. When the cursor display 70 determines that each of the flexible key displays is selected one by one, the CPU 310 proceeds to step S65 in FIG. 13 and executes the processing after step S65.

  When it is determined in step S82 that the incoming call priority mode is set, the CPU 310 determines whether or not the line state of the line corresponding to the flexible key display being selected with the cursor display 70 positioned is being received. If not (step S84), the process proceeds to step S83, and the processing after step S83 is performed.

  If it is determined in step S84 that the cursor display 70 is positioned and the line state of the line corresponding to the selected flexible key display is receiving a call, the CPU 310 immediately processes the incoming call response (step S85). Then, the process proceeds to step S45 in FIG. 12, and the processes after step S45 are performed.

  As described above, in this embodiment, a packet phone for a business phone system using a wireless LAN can be realized with a small number of buttons (keys) without using a self-illuminated button using an LED.

  And since the self-illuminating button by LED is not used, power consumption can be reduced and a wireless communication terminal with a long standby time can be configured. In addition, in the wireless communication terminal which is the packet telephone of this example, a display corresponding to the flexible key is displayed on a display screen such as an LCD, and the display corresponding to the flexible key is set corresponding to the line and various functions. Thus, there is no need to provide a button in a narrow space, and it is possible to cope with a large number of lines and functions.

[Other Embodiments and Modifications]
In the above-described embodiment, a numeric number is used as a symbol corresponding to each of a plurality of communication lines. However, the symbol is not limited to a numeric number, and A, B, C,.・ Other characters and symbols may be used. Further, the key button graphic may be displayed in the form of an icon.

  Further, according to the change in the line state, the symbol added to the symbol corresponding to each line may be a symbol or a figure corresponding to the line state instead of the alphabetic character as in the above example. In addition, as described above, the display applied to the symbol corresponding to each line according to the state of the line is not the additional display of the symbol as in the embodiment, but the blinking or color of the symbol corresponding to each line. A change in display mode such as a change can also be used.

  In addition, the detailed display of the line status is an explanatory character display in the above-described embodiment, but instead of this explanatory character or in addition to this explanatory character, a symbol or a figure corresponding to the line state is displayed. It may be.

  In the above-described embodiment, the cursor display 70 is displayed on the display screen 315D even in a normal state. However, on the initial screen that is not in use, such as a standby state, a cursor indicating that selection is not being displayed, The cursor may be displayed when the user puts the hand in use.

  In the above-described embodiment, when the on-hook key (which may be the return key) is operated, for example, the display returns to the state of selecting all the one-line flexible key displays as shown in FIG. You may make it return to the state before the state when an on-hook key was operated.

  Further, in the above-described embodiment, after the end-call processing, for example, the display returns to the state where all of the one-line flexible key display as shown in FIG. 15 is selected. You may return to the state of selecting the flexible key display that was selected when operating. In such a case, the cursor display 70 is often positioned on the flexible key display corresponding to the frequently used line, which improves usability. That is, it is possible to realize a so-called last memory function in which the last used line is being selected.

  Note that the display change mode predetermined according to the line state after the change is not limited to the additional display of the symbol with respect to the flexible key display in the above example, but the flexible key display itself blinks, The display mode may be changed. When a color LCD is used as the LCD 315, the color of the flexible key display may be changed according to the line state.

  The cursor display is not limited to the underbar, and various modes such as an enclosure display of flexible key display, black and white inversion display, and color display of the surrounding area of the flexible key display can be adopted.

  In the above embodiment, only a telephone call is made. However, an electronic mail function may be provided in a packet telephone so as to perform electronic mail communication.

  Needless to say, the display element is not limited to the LCD, and other flat display panels such as an organic EL (Electronic Luminescence) display and an FED (Field Emission Display) can be used.

It is a block diagram which shows the structural example of the business phone system which uses embodiment of the radio | wireless communication terminal by this invention as a packet telephone. It is a block diagram which shows the structural example of the access point apparatus for wireless LANs used for the system of FIG. FIG. 2 is a block diagram illustrating a configuration example of a station apparatus unit of a wireless LAN terminal used in the system of FIG. 1. It is a block diagram which shows the structural example of the principal part of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the example of an external appearance structure of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the flowchart for operation | movement description of the server apparatus of the main apparatus part of the system of FIG. It is a figure which shows the flowchart for operation | movement description of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the example of a display in the display screen of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the example of a display in the display screen of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the example of a display in the display screen of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows a part of flowchart for operation | movement description of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows a part of flowchart for operation | movement description of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows a part of flowchart for operation | movement description of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows a part of flowchart for operation | movement description of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the example of a display in the display screen of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the example of a display in the display screen of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the example of a display in the display screen of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention. It is a figure which shows the example of a display in the display screen of the packet telephone as an embodiment of the radio | wireless communication terminal by this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Main apparatus part, 2 ... Packet telephone, 3 ... Wireless LAN, 4 ... External network, 20 ... Terminal side station apparatus part for wireless LAN, 30 ... Telephone part, 40 ... Battery, 325 ... Line state memory holding part

Claims (2)

In a wireless communication terminal that is wirelessly connected to a main unit that can accommodate a plurality of communication lines and is driven by a battery,
Display means for displaying a plurality of symbols corresponding to each of the plurality of communication lines on a display screen;
Line state storage and holding means for storing and holding each line state corresponding to each of the plurality of symbols displayed on the display screen;
Receiving and analyzing information about a change in the state of a plurality of communication lines from the main unit, and knowing the communication line in which the state has changed among the plurality of communication lines, and the state after the change Means for detecting and updating the line state stored and held in the line state storage holding unit based on the detection result;
A selection operation means for allowing a user to select a desired symbol from the plurality of symbols on the display screen;
When the symbol is selected by the selection operation means, the line status of the communication line corresponding to each of the symbols is displayed in detail based on the line status information stored in the line status storage holding means. Control means to do and
Equipped with a,
The selection operation means can select the plurality of symbols in units of a group of a plurality of symbols,
The radio communication terminal characterized in that the control means displays a list of detailed information on the line status of each symbol included in the group when the plurality of symbols are selected in the group unit . The wireless communication terminal according to claim 1 ,
Means for selecting the communication line corresponding to the one line state when one line state is selected from the list display on the display screen displaying the detailed information of the line state. A wireless communication terminal comprising:

Images