JP4475411B2 - Telephone communication terminal - Google Patents

Description

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

  A button telephone system is widely used as a business phone system. The key telephone terminal used in this key telephone system generally has a plurality of external keys set corresponding to each of a plurality of communication lines accommodated by the main unit, in addition to a numeric keypad for dialing, A plurality of operation keys such as a plurality of function keys (hereinafter referred to as flexible keys) capable of freely setting various functions are provided.

  In a conventional key telephone terminal, a self-illuminating system including an LED (Light Emitting Diode) and a lamp inside the flexible key is used, or an LED and a lamp are arranged near each flexible key. Thus, the use state is distinguished and displayed by lighting or extinguishing, blinking, emission color, or the like of the LED or the lamp.

  For example, in the case of a flexible key (external line key) with an assigned external line, the line status of the corresponding telephone line in use, available, on hold, incoming call, etc., LED lighting, extinction, flashing, light emission By distinguishing the display by color or the like, a user who operates these outside line keys to capture the corresponding telephone line is supported (for example, Japanese Patent Application Laid-Open No. 64-82732). No.), Patent Document 2 (Japanese Patent Laid-Open No. Sho 63-242096), Patent Document 3 (Japanese Patent Laid-Open No. Hei 5-227263), etc.).

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

  The power consumption of the LED is relatively large. When a plurality of LEDs are provided corresponding to a plurality of flexible keys corresponding to the number of lines and the number of setting functions, the power consumption increases by that number, and the battery consumption is large. I cannot wait for a long time. In particular, when the flexible key is an external line key, in general, the fact that another terminal is in use is displayed by turning on an LED, and the other terminal is used even if the terminal itself 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, when actually used, it is updated by obtaining the latest line status and the like for a plurality of telephone communication lines accommodated in the main unit by operating and communicating. Otherwise, there is a problem that the actual line state at that time cannot be confirmed. 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.

  Also, when the number of accommodated lines in the main unit increases or the number of setting functions increases, it becomes impossible to install the required number of flexible keys on the panel surface of the telephone terminal. There is a problem that is limited. In particular, since the radio telephone communication terminal is required to be small and light, this problem is great.

  On the other hand, in Patent Document 4 (Japanese Patent Laid-Open No. 8-97898) and Patent Document 5 (Japanese Patent Laid-Open No. 2000-32520), lines and functions assigned to each of a plurality of flexible keys are assigned to a plurality of pages. As described above, an invention has been proposed in which the number of lines and the number of functions set in a plurality of flexible keys is increased to the number of pages of the number of flexible keys. According to this, a large number of lines and functions can be set with a small number of flexible keys.

Moreover, said patent document is as follows.
Japanese Patent Application Laid-Open No. 64-82732 Japanese Patent Laid-Open No. 63-242096 JP-A-5-227263 JP-A-8-97889 JP 2000-32520 A

  However, in the case of the inventions described in Patent Document 4 and Patent Document 5 described above, each page is changed for each flexible key, and one line or one function is set. Therefore, each page is not referred to. The state of the line allocated on the page cannot be known.

  For this reason, it is difficult to use, for example, complicated operations are required for detecting an outside line, and it takes time to pick up a specific line such as an individual incoming call to your telephone communication terminal. There's a problem.

  In view of the above, the present invention provides a large number of telephones, even with a few operation keys, as a telephone communication terminal for communicating through a communication path to a main unit capable of accommodating a plurality of communication lines. It is an object of the present invention to provide a user-friendly communication line.

In order to solve the above problems, a telephone communication terminal according to the present invention provides:
In a telephone communication terminal that is connected through a communication path to a main unit that can accommodate a plurality of communication lines and performs communication through the communication line,
An operation key to which the line state of the communication line is assigned;
A display element comprising a display screen;
When the operation key is operated, a list of the communication lines in the line state assigned to the operation key is determined in advance for the type related to the line state by the list of types related to the line state. When there are a plurality of communication lines that are in the assigned line state and are displayed on the display screen in order of priority, the communication line that is selected when the enter key is operated is displayed. Select and execute a processing operation corresponding to the line state, and when there is one communication line in the assigned line state, the operation key is operated without operating the determination key. Control means for selecting the one communication line by the control unit to perform a processing operation corresponding to the line state;
It is characterized by providing.

  According to the present invention having the above-described configuration, instead of providing a plurality of operation keys according to the number of lines, an operation key to which a line state is assigned is provided, and when the operation key is operated, A list of connected line groups is displayed. Therefore, it is only necessary to provide fewer operation keys compared to the case where a plurality of operation keys corresponding to the number of lines are provided, and the number of operation keys is increased when the number of lines accommodated by the main unit is increased. There is no need to let them.

  Since the list is displayed in a predetermined priority order, the user can easily select a line in a line state having a high priority.

  According to the present invention, instead of providing a plurality of operation keys corresponding to the number of lines, it is only necessary to provide operation keys to which line states are assigned, so that the number of operation keys can be reduced. Moreover, even if the number of lines accommodated in the main unit increases, it is not necessary to increase the number of operation keys.

  Then, the user can operate the operation key to which the line state is assigned, and the list of lines in the line state can be viewed in a predetermined priority order. Therefore, the line selection operation requested by the user can be performed. This makes it easy to realize a telephone communication terminal that is easy to use.

  Hereinafter, the case where the embodiment of the telephone communication terminal according to the present invention is used in a business phone system in which a main apparatus unit and a plurality of telephone terminals are connected through a wireless communication path using a wireless LAN is taken as an example. This will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an example of the overall configuration of a business phone system in which an embodiment of a telephone communication terminal according to the present invention is used. The wireless LAN used in this example conforms to the IEEE 802.11 standard, and all information is transmitted and received as packets, in addition to voice information and information for call control. In this example, the embodiment of the telephone 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. In this example, the accommodated telephone communication lines include analog lines, ISDN (Integrated Service Digital Network) lines, VoIP (Voice over Internet Protocol) lines (hereinafter referred to as IP lines), etc. A plurality of types of lines can be accommodated, and the line type of each line is also registered and stored and managed corresponding to each line number.

  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. In this case, the server device 12 determines the incoming call type, that is, whether the incoming call is a general incoming call not specifying a packet telephone in the business phone system, an individual incoming call addressed to a specific packet telephone 2, or a CES incoming call. Then, it is included in the incoming notification of those discrimination results and passed to the packet telephone.

  In the case of a general incoming call or a CES incoming call, the incoming call notification packet is sent from the server device 12 to the access point device 10 by a multicast packet. In the case of an individual incoming call, the incoming call notification packet is sent to the server. From the device 12 to the access point device 10, it is sent by a unit cast packet that specifies the packet telephone 2 of the called party.

  Here, the CES incoming call is an incoming call when an outside line call is made between operators via a telephone station by adding a four-digit number to the telephone number.

  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 communication lines connected to the external network 4, the server apparatus 12 connects another telephone terminal through the communication 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.

  When the server apparatus 12 receives an incoming call from one of the other parties via, for example, the external network 4, an incoming notification packet (incoming notification information, The identification information of the line that received the incoming call and the above-mentioned incoming call type information) are sent to the access point device 10 by multicast. As described above, in the case of individual incoming calls, an incoming call notification is sent to the access point device 10 by unicast.

  In this example, the access point device 10 determines that the incoming notification packet is an important packet, converts the multicast packet of the incoming notification into a unicast packet, and transmits the unicast packet through the wireless LAN 3 to the station device of the subordinate packet telephone 2. Send to all of part 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 communication line that received the incoming call, and notifies 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 communication lines and makes a call operation, the call is received by the caller on 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 communication 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 this line state notification packet (in this specification includes an incoming notification packet) as an important packet, and is a multicast packet. The packet is converted into a unicast packet and sent to all 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 decomposition / generation unit 319, an audio data input / output interface 320, an LED drive control unit 321, a line state storage holding unit 327, and a flexible key setting storage holding unit 328 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 composed of a plurality of self-illuminating flexible keys, each of which includes a non-locking push button and incorporates an LED 61, and in the example of FIG. 5, four flexible keys FK1. , FK2, FK3, FK4. In this example, the LED 61 is an LED that can be switched and displayed in two colors of red and green.

  As will be described later, in this embodiment, each of the flexible keys FK1, FK2, FK3, and FK4 includes a plurality of communication lines accommodated in the main device unit 1, for example, “incoming”. Functions such as “external line available”, “pending”, and other functions provided by the packet telephone 2 are assigned.

  The display screen 315D of the LCD 315 corresponds to each of the plurality of flexible keys FK1, FK2, FK3, FK4 when none of the plurality of flexible keys FK1, FK2, FK3, FK4 is operated. A plurality of key assignment display symbols 62 that are to be displayed are displayed. In this example, the key assignment display symbol 62 is a character display indicating the line status such as “incoming call”, “external line”, “hold”, etc. assigned to the flexible keys FK1, FK2, FK3, FK4, and a character display of “function”. Consists of.

  In this example, as shown in FIG. 5, the same numbers are assigned to the corresponding keys below the flexible keys FK1, FK2, FK3, FK4 and the key assignment display symbols 62, respectively. Thus, the user can easily recognize the correspondence between the flexible keys FK1, FK2, FK3, FK4 and the key assignment display symbols 62. The number for this association may be on the side or on the upper side, not on the lower side, and may be located anywhere as long as the correspondence between the two is known.

  Here, for each of the flexible keys FK1 to FK4, which of the line states is assigned and set or whether the function is assigned and set may be fixedly determined in advance. Then, the user can arbitrarily assign and set each of the flexible keys FK1 to FK4.

  Then, on the LCD screen 315D, a key assignment display symbol 62 corresponding to the line state and function assigned to each of the flexible keys FK1 to FK4 is displayed under the control of the CPU 310.

  The operator can perform line assignment and function assignment setting for each of the plurality of flexible keys FK1 to FK4 during the installation work of the business phone system of this embodiment. Further, at a later time, the user can select the “setting” item from the menu of the packet telephone 2 and perform the setting in the “setting”.

  Setting information indicating which line state or function is assigned to each of the plurality of flexible keys FK1 to FK4 is held in the flexible key setting storage holding unit 328. When the setting contents of the flexible keys FK1 to FK4 are changed, the setting information held in the flexible key setting storage holding unit 328 is updated according to the change.

  The setting and operation for the flexible keys FK1, FK2, FK3, and FK4, and the description related to the display of the LED 61 and the display content of the LCD screen 315D will be described in further 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 a plurality of flexible keys FK1 to FK4, a numeric keypad 51, an upper key 52, a lower key 53, a left key 54, a right key 55, and a determination key 56. Cursor keys, operation keys such as a hold key 57 and a response key 58 are included.

  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 display screen 315D of the LED 61 and 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 324 constituting the receiver through the amplifier 323. In addition, a transmission voice signal from a microphone 325 as a transmitter is supplied to the voice data input / output interface 320 through an amplifier 326. 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 this example, the LED group 322 composed of the plurality of LEDs 61 is connected to the LED drive control unit 321, and the LED group 322 is selected according to the analysis result of the line state notification information packet received through the wireless LAN 15. The lighting, extinguishing, blinking, and the like of each LED 61 that constitutes are individually controlled. In this example, display control of the corresponding LED 61 is performed according to the operation of the flexible keys FK1 to FK4.

  In FIG. 5, 64 is a hole for emitting sound from the speaker 324, and 65 is a hole for collecting sound by the microphone 325.

  The line state information storage / holding unit 327 stores and holds the line states of a plurality of communication lines accommodated in the main unit 1. The line state information storage unit 327 and the flexible key setting storage unit 328 described above may be part of the RAM 313.

  FIG. 6 is an example of storage information in the line state information storage holding unit 327. In the case of this example, as shown in FIG. 6, for each of a plurality of lines accommodated in the main unit 1, a line number and a line type as its identification number are registered and stored. The line number and the line type are written into the line state information storage / holding unit 327, for example, by an installer (operator) when the business phone system is installed.

  Then, as shown in FIG. 6, the line state information storage / holding unit 327 in this example stores and holds the states of a plurality of lines stored in the main unit 1 for each line state. In this example, “incoming call”, “external line available”, and “on hold” are stored and held as the line status.

  When the packet telephone 2 receives an incoming notification as a line state change notification from the main unit 1, the packet telephone 2 analyzes the incoming notification information to determine which line the incoming call is, and whether the incoming call is It is determined whether the incoming call is an individual incoming call addressed to the packet telephone 2, a general incoming call for the entire business phone system, or a CES incoming call, and the determination result is stored and held in the line state information storage holding unit 327. In FIG. 6, the line number “01” is receiving a general incoming call, the line number “04” is receiving an individual incoming call, and the line number “09” is receiving a CES incoming call. It shows that.

  Further, when the packet telephone 2 receives the system hold information as the line status change notification from the main unit 1, it determines which line is on hold, and as shown in FIG. Is stored and held in the line state information storage holding unit 327. When the user of the packet telephone 2 holds the outside line during a call, the outside line is stored and held in the line state information storage holding unit 327 as being on hold. FIG. 6 shows that the system numbers are held for the line numbers “07” and “08” and that the line number “10” is self-pending. That is, in this embodiment, the line number and the hold type are stored and held in the line state information storage holding unit 327 as the information on the line on hold.

  In addition, when the packet telephone set 2 receives that the outside line is in use as a line state change notification from the main unit 1, it determines which line is in use and, as shown in FIG. Is stored and held in the line state information storage holding unit 327. The packet telephone 2 also recognizes the line on hold and the line being received as being using the outside line. FIG. 6 shows that the line numbers “03”, “05”, and “06” are in the unused state, and that other lines are in use and stored.

[Description of Flexible Keys FK1 to FK4 of Packet Telephone 2]
As described above, in this embodiment, a line state or a function is assigned and set to each of the plurality of flexible keys FK1 to FK4.

<Flexible key FK1 (incoming key)>
In the embodiment of FIG. 5, the line state of “incoming” is assigned and set to the flexible key FK1. In this embodiment, among the plurality of communication lines accommodated in the main apparatus unit 1, the incoming line is associated with the flexible key FK 1 and stored in the line state information storage unit 327. As will be described later, when the user presses the flexible key FK1, a list of incoming lines at that time is displayed on the LCD display screen 315D.

  Therefore, in this example, the key assignment display symbol 62 of the LCD screen 315D corresponding to the flexible key FK1 is displayed as “incoming call”. In this example, the character display of “incoming call” is not displayed on the LCD screen 315D when there is no incoming line as shown in FIG.

  If there is even one incoming line, as shown in FIG. 7B, a key assignment display symbol 62 consisting of character display of “incoming” is displayed on the LCD display screen 315D. The second user is notified of the incoming call. Further, in the state where even one incoming line is generated, the LED 61 of the flexible key FK1 blinks in red to notify the user of the incoming call again.

  In this example, as described above, when the packet telephone 2 receives the incoming notification from the main unit 1, whether the incoming call is an individual incoming call addressed to the packet telephone 2 or a general incoming call for the entire business phone system. Alternatively, it is determined whether the incoming call is a CES incoming call, and the determination result is stored and held in the line state information storage / holding unit 327, and the incoming call type is changed by changing the blinking cycle of the LED 61 according to the incoming call type. The user can also be notified of whether the type is a type. Further, in the packet telephone 2 of this example, the ring tone is changed according to the incoming call type so that it can be distinguished.

  When a plurality of incoming calls occur at the same time, for example, an incoming call type having a predetermined high priority, in this case, a priority in the order of individual incoming call> CES incoming call> general incoming call (the higher the priority is on the left side), An LED blinking display and a ring tone corresponding to the incoming call type are generated.

  Then, as will be described later, when the flexible key FK1 is pressed during an incoming call, the packet telephone 2 refers to the line state “incoming” line of the line state information storage holding unit 327 and refers to the LCD screen 315D. As shown in FIG. 7C or FIG. 7D, a list of incoming lines is displayed. In this case, the list display of incoming lines is such that the line number and the incoming call type are displayed as one line for one line.

  In the packet telephone 2 of this embodiment, the user can select and set the priority order display mode and the non-priority order display mode for this list display.

  In this priority order display mode for incoming calls, a list of incoming lines is displayed in the order of priority of the incoming call types described above. FIG. 7C shows an example of the LCD display screen 315D in the priority order display mode. One line is arranged in a line unit of one line consisting of the line number and the incoming call type in the order of priority of the incoming call type described above. The incoming line is displayed.

  In the non-priority order display mode for incoming calls, a list of incoming lines is displayed in the order of line numbers regardless of the priority of the incoming call type. FIG. 7D is an example of the LCD display screen 315D in the non-priority order display mode. In the order of the line numbers, one line is regarded as one line, and a plurality of incoming lines are displayed in line units. Yes.

  Here, in FIG. 7C and FIG. 7D, the line to which the cursor display 70 indicated by the underline is given indicates the selected line. By operating the up key 52 or the down key 53, The cursor display 70 can be moved to change the selected line. When the enter key 56 is pressed, the operation is an operation for receiving an incoming call (incoming response) on the line that was in the selected state at that time. Is done.

  In the priority order display mode, when the flexible key FK1 is pressed, the line with the highest priority of the incoming call type among the incoming lines comes to the top, and the cursor display 70 is always in that position. The user can always select the incoming call type having a high priority at an early stage.

  That is, for example, when there is an individual incoming call, since the cursor display 70 is positioned on the individual incoming call, the individual incoming call can be picked up simply by pressing the flexible key FK1 and then pressing the enter key 56. As described above, in the priority order display mode, an incoming call of a higher priority incoming call type can always be taken first, which is convenient.

  In this embodiment, when the flexible key FK1 is pressed, and there is only one incoming line, the operation of the flexible key FK1 is called an incoming call response operation without operating the enter key 56. It is possible to take an incoming call.

  Further, it is possible to respond to the incoming call line by operating the response key 58 without pressing the flexible key FK1. At this time, when a plurality of lines are in the incoming state, the line that answers the incoming call is displayed at the top of the lines displayed in a list when the flexible key FK1 is pressed, and is selected with the cursor 70. Is a line. Note that an off-hook key may be provided in place of the response key 58 so that an incoming call response is made when the off-hook key is operated during an incoming call.

<Flexible key FK2 (outside line key)>
In this embodiment, the flexible key FK2 is assigned with a line status of “external line available”. In this embodiment, among the plurality of communication lines accommodated in the main apparatus unit 1, a free line is associated with the flexible key FK 2 and stored in the line state information storage holding unit 327. As will be described later, when the user presses the flexible key FK2, a list of lines that are free at that time is displayed on the LCD display screen 315D.

  Therefore, in this example, the key assignment display symbol 62 of the LCD screen 315D corresponding to the flexible key FK2 is displayed as “outside line”. In this example, as shown in FIG. 8A, the character display of “outer line” is displayed on the LCD screen 315D when there is one free line.

  Then, when there are no free lines at all, as shown in FIG. 8B, the key assignment display symbol 62 composed of the character display of “outside line” is erased on the LCD display screen 315D, and the packet telephone 2 The user is notified that there is no free outside line.

  In this embodiment, since the flexible key FK2 is associated with an empty line free state, the LED 61 of the flexible key FK2 does not display that the other line telephone 2 is using the external line.

  In this embodiment, when the user presses down the flexible key FK2 to make an outside line call, the packet telephone 2 lights the LED 61 of the flexible key FK2 in green and the line state “ Referring to the line of “external line availability”, the LCD screen 315D displays a list of available lines as shown in FIG. 9A or 9B. In this case, the list display of the lines in the external line vacant state displays the line number and the line type as one line for one line.

  In the packet telephone set 2 of this embodiment, the user can select and set the priority order display mode and the non-priority order display mode for the list display of the outside line availability state.

  In the priority order display mode for the external line idle state, the priority order is determined for the line types, for example, in ascending order of communication charges. In other words, in this example, a line type with a lower communication fee is given a higher priority. FIG. 9A shows an example of the LCD display screen 315D in the priority order display mode for the list display of the outside line availability state. In the priority order of the line types described above, one line is regarded as one line, and the idle state A list of lines is displayed.

  Further, in the non-priority order display mode for the list display of the outside line availability state, the list of idle lines is displayed in the order of the line numbers regardless of the priority order of the line types. FIG. 9B shows an example of the LCD display screen 315D in the non-priority display mode. In the order of the line numbers, one line is displayed as one line, and a plurality of idle lines are displayed. Yes.

  Here, in FIG. 9 (A) and (B), the line to which the cursor display 70 shown by the underline is given indicates the selected line, and by operating the up key 52 or the down key 53, The cursor display 70 can be moved to change the selected line. When the enter key 56 is pressed, the operation is a request to capture the line that was in the selected state at that time.

  When the flexible key FK2 is pressed in the priority order display mode, the line with the highest priority of the line type and the cheapest communication charge comes to the top among the available lines, and the cursor display 70 is always displayed. Since it is in that position, the user can always quickly select and capture a line of a line type with a low communication charge with a high priority.

  In this embodiment, when the flexible key FK2 is pressed, and only one line is available, the operation of the flexible key FK2 is performed without operating the enter key 56. This is regarded as an operation for requesting acquisition of a free line. Thereby, when there is one free line, the operation of the enter key 56 can be omitted.

  Note that when an off-hook key is provided and the off-hook key is operated, the line is in an empty line and is displayed at the top of the list displayed when the flexible key FK2 is pressed. You may make it make the acquisition request | requirement of this line.

<Flexible key FK3 (pending key)>
In this embodiment, the line status of “pending” is assigned and set to the flexible key FK3. In this embodiment, among the plurality of communication lines accommodated in the main apparatus unit 1, the line on hold is associated with the flexible key FK 3 and stored in the line state information storage holding unit 327. As will be described later, when the user presses the flexible key FK3, a list of lines on hold at that time is displayed on the LCD display screen 315D.

  Therefore, in this example, the key assignment display symbol 62 of the LCD screen 315D corresponding to the flexible key FK3 is displayed as the character “pending”. In this example, as shown in FIG. 10A, the character display of “hold” is not displayed on the LCD screen 315D when there is no line on hold.

  If there is at least one line in the hold state, as shown in FIG. 10B, the key assignment display symbol 62 composed of the characters “hold” is displayed on the LCD display screen 315D, and the packet is displayed. The user of the telephone 2 is notified that there is a line on hold. Further, in the state where even one line on hold is generated, the LED 61 of the flexible key FK2 blinks in red to notify the user that there is a line on hold.

  In this example, as described above, when the packet telephone set 2 receives the notification information about the reserved line from the main unit 1, the packet telephone set 2 determines that the hold is the system hold, and holds the system hold for the line number of the determination result. The line state information storage / holding unit 327 stores and holds the LED 61 and blinks in response to the system suspension.

  In addition, when the packet telephone 2 is placed on hold by pressing the hold key 57 during a call at the terminal itself, the packet telephone 2 sets the line in the self-hold state and stores the information in the line state information storage holding unit 327. At the same time, the LED 61 blinks according to the self-hold.

  Here, the LED 61 display for distinguishing between system hold and self hold is made by changing the blinking cycle, for example.

  In this embodiment, when there are a plurality of lines on hold, if there is a self hold, the LED 61 is configured to blink according to the self hold.

  As will be described later, when the flexible key FK3 is pressed while one of the lines is on hold, the packet telephone 2 refers to the line “pending” line in the line state information storage unit 327. As shown in FIG. 10C or FIG. 10D, a list of lines on hold is displayed on the LCD screen 315D. In this case, the list of lines on hold displays the line number and the hold type as one line for one line.

  In the packet phone 2 of this embodiment, the user can select and set the priority order display mode and the non-priority order display mode also for the list display of the pending lines.

  In the priority order display mode for the list display of the pending lines, the list of the pending lines is displayed with the self-hold as the higher priority. FIG. 10C shows an example of the LCD display screen 315D in the priority order display mode. One line is arranged in a line unit of one line of the line number and the hold type in the order of priority of the hold type described above. The pending line is displayed.

  In the non-priority order display mode for the list display of the pending lines, the list of the pending lines is displayed in the order of the line numbers regardless of the priority of the hold type. FIG. 10D is an example of the LCD display screen 315D in the non-priority order display mode. In the order of the line numbers, one line is regarded as one line and a plurality of pending lines are displayed in units of lines. Yes.

  Here, in FIG. 10C and FIG. 10D, the line to which the cursor display 70 indicated by the underline is given indicates the reserved line in the selected state, and the up key 52 or the down key 53 is operated. The cursor display 70 can be moved to change the selected hold line. When the enter key 56 is pressed, the operation is a hold release operation for the hold line that was in the selected state at that time. .

  In the priority order display mode, when the flexible key FK3 is pressed, the self-holding line with the high priority of the holding type comes to the top among the lines on hold, and the cursor display 70 is always in that position. Therefore, the user can always select a hold release request for a line that is on hold at all times, which is convenient.

  Note that in this embodiment, when the flexible key FK3 is pressed, and there is only one line on hold, the operation of the flexible key FK3 is operated to cancel the hold request without operating the enter key 56. It is considered that the hold can be released.

<Flexible key FK4 (function key)>
In this embodiment, a group of functions provided in the packet telephone 2 is assigned and set to the flexible key FK4. In this example, a function that can be assigned includes a one-touch function, a voice mail function, and the like. The one-touch function is a function that allows one-touch (one operation) to make a call to a telephone number registered in advance, and registration can be set for a plurality of other party telephone numbers.

  The flexible key FK4 can be assigned with a plurality of functions instead of a single function, but when a plurality of functions can be registered with a single function, such as the one-touch function described above, The group of the one function can be assigned to the flexible key FK4.

  For example, the user assigns the function to the flexible key FK4. Information on the assigned function is registered in the flexible key setting storage holding unit 328 and stored and held.

  FIG. 11 shows an example of stored information in the flexible key setting storage holding unit 328. That is, the flexible key setting storage holding unit 328 stores and holds setting information assigned to the four flexible keys FK1 to FK4.

  In other words, as described above, the flexible key FK1 is assigned the line status “incoming”, and information indicating the flexible key FK1 is stored and held as setting content information in association with the flexible key FK1. .

  Further, the flexible key FK2 is assigned with the “external line available state” of the line state, and information indicating the flexible key FK2 is stored and held as setting content information in association with the flexible key FK2. The flexible key FK3 is assigned the line status “pending”, and information indicating the flexible key FK3 is stored and held as setting content information in association with the flexible key FK3.

  The flexible key FK4 is assigned with a function set and registered by the user among the functions of the packet telephone 2. When a function is assigned to the flexible key, detailed setting information regarding the function is also stored and held in the flexible key setting storage holding unit 328. That is, in this example, the number of functions that can be set in advance is set in the flexible key setting storage holding unit 328, and the function number is registered in advance.

  In the example of FIG. 11, the function numbers “11”, “12”, and “14” are assigned with the one-touch function, and the function number “15” is assigned with the voice mail playback function. ing. As shown in FIG. 11, in this embodiment, as for the one-touch function, the telephone number of the other party that is set and input by the user and is transmitted by the one-touch function is also stored and held.

  Although not shown in FIG. 11, in this embodiment, the function usage frequency information of the function number is written as information corresponding to each function number. As will be described later, this usage frequency information is used as information for determining priorities when displaying a list of functions.

  As described above, since the flexible key FK4 is assigned as a function key, the key assignment display symbol 62 of the LCD screen 315D corresponding to the flexible key FK4 is displayed as a character of “function”. In this example, the characters “function” are not displayed when no function is assigned to the flexible key FK4 as shown in FIG. When at least one function is assigned to the flexible key FK4, as shown in FIG. 12B, a key assignment display symbol 62 composed of the characters “function” is displayed on the LCD screen 315D.

  In this embodiment, when the user depresses the flexible key FK4, the packet telephone 2 lights the LED 61 of the flexible key FK4 in green and corresponds to the flexible key FK4 in the flexible key setting storage holding unit 328. As shown in FIG. 13A or 13B, a list of functions set in the flexible key FK4 is displayed on the LCD screen 315D with reference to the function setting contents stored in the above manner. To. In this case, the list display displays the function number and the function content of one function as one line.

  In the packet telephone 2 of this embodiment, the user can select and set the priority order display mode and the non-priority order display mode for the list display of this function.

  In the priority order display mode for this function, as described above, the priority order is determined in descending order of frequency of use. That is, a function with a function number that is frequently used is assigned a higher priority. FIG. 13A is an example of the LCD display screen 315D in the priority order display mode for the function list display, in which a plurality of functions are displayed in a list in units of lines in the function order of the function number that is frequently used. Yes.

  In the non-priority order display mode for function list display, a list of setting functions is displayed in the order of function numbers regardless of the frequency of use of the functions. FIG. 13B is an example of the LCD display screen 315D in the non-priority order display mode, and a plurality of functions are displayed in a list in units of rows in order of function numbers.

  Here, in FIG. 13A and FIG. 13B, the line to which the cursor display 70 indicated by the underline is given indicates the selected line, and by operating the up key 52 or the down key 53, The function of the selected state can be changed by moving the cursor display 70. When the enter key 56 is pressed, the operation is a request to execute the function that was in the selected state at that time.

  In the priority order display mode, when the flexible key FK4 is pressed, the function that is frequently used comes to the top, and the cursor display 70 is always in that position, so the user can quickly select the function that is frequently used. Can be used.

  In this embodiment, when the flexible key FK4 is pressed, and only one function is set, the operation of the flexible key FK4 is performed without operating the enter key 56. It is regarded as a function execution request operation. Thereby, when there is one setting function, the flexible key FK4 can be used as the setting function key, and the operation of the decision key 56 can be omitted.

  In the packet telephone 2 of this embodiment, for example, the upper key 52 is also used as a menu display key. By operating the upper key 52, while watching 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 set the line state and function for each of the flexible keys FK1 to FK4. Further, detailed settings for functions such as one-touch can be set.

[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 30 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. 14 is a flowchart for explaining the operation of the server device 12 of the main device 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. 15 and the display example of the screen 315D of the LCD 315 described above. Processing of each step in the flowchart of FIG. 15 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.

  As shown in FIG. 15, the CPU 310 of the packet telephone 2 always monitors whether 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 (step S12), and the storage information of the line state information storage holding unit 327 is updated based on the detection result (step S13).

  Then, as a result of the detection in step S12, the CPU 310 determines whether or not the line state after the change is an incoming call (step S14). When it is determined that the incoming line is an incoming call, as shown in FIG. In addition, the LED 61 of the flexible key FK1, which is the incoming key of this example, is made to blink in red (step S15), and the character “incoming” is displayed as the key assignment display symbol 62 corresponding to the flexible key FK1 of the LCD display screen 315D. If not displayed, the character “incoming” is displayed (step S16), and the user is notified of the incoming call. At this time, at the same time, the user is notified of the incoming call by ringing a ring tone or vibrating the packet telephone.

  Next, the CPU 310 refers to the storage holding information about the external line available state in the line state information storage holding unit 327, and determines whether or not there is no external line available state (step S17). If there are no free lines on the outside line, the process routine is exited. Further, when there are no more external lines available, the “external line” of the key assignment display symbol 62 corresponding to the flexible key FK2, which is the external line key, displayed on the LCD display screen 315D as shown in FIG. 8A. The character display is erased as shown in FIG. 8B (step S18), and then this processing routine is exited.

  If it is determined in step S14 that the incoming line is not an incoming call, the CPU 310 determines whether or not the changed line state is on hold (step S19). It is determined that the line is in use, the process proceeds to step S17, and the processes after step S17 described above are executed.

  If it is determined in step S19 that the line state after the change is on hold, the CPU 310 refers to the information on the line state “pending” in the line state information storage / holding unit 327, and already has another line. It is determined whether or not it is on hold (step S20).

  If it is determined in step S20 that the other line is already on hold, the CPU 310 displays the hold display by the LED 61 of the flexible key FK3, which is the hold key, as shown in FIG. 10B. At the same time, the LCD display screen 315D displays the “pending” character of the key assignment display symbol 62 corresponding to the flexible key FK3.

  If it is determined in step S20 that the other line is not on hold, the CPU 310 causes the LED 61 of the flexible key FK3, which is a hold key, to blink in red indicating system hold (step S21). Then, the character “HOLD” is displayed as the key assignment display symbol 62 corresponding to the flexible key FK3 (step S22). Thereafter, the process routine is exited.

[Processing such as display control corresponding to user key operation in packet telephone 2]
Next, display control and related control by the CPU 310 when the user performs key operation input in the packet telephone 2 will be described with reference to the flowcharts of FIGS. 16 to 20 and the above-described display examples. 16 to 20 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 constantly monitors whether or not a key operation has been performed by the user (step S31 in FIG. 15). When determining that the key operation has been performed, the CPU 310 determines whether or not the operated key is the response key 58. If it is determined that it is a response key (step S32), it is determined by referring to the line state information storage / holding unit 327 whether or not a call is being received (step S33).

  If it is determined in step S33 that the call is not being received, the CPU 310 determines that the operation of the response key 58 is an erroneous operation, ignores the operation, and returns to step S31. If it is determined in step S33 that the call is being received, the CPU 310 performs an incoming call response process and a process for shifting to a call state (step S34). Then, the LED 61 of the flexible key FK1, which is an incoming call key, is changed from blinking display during incoming call to red lighting indicating use (step S35).

  Next, the CPU 310 determines whether or not the call has ended (step S36). When determining that the call has ended, the CPU 310 sends an end-call notification including identification information of the line that has ended to the main unit 1. Then, the stored information in the line state information storage holding unit 327 is updated to perform the call end process (step S37).

  Then, CPU 310 refers to the stored contents of line state information storage holding unit 327 at that time, and changes the display contents of LCD display screen 315D and the display states of LEDs 61 of flexible keys FK1 to FK4 according to the stored contents. (Step S38). Then, the process returns to step S31.

  If it is determined in step S32 that the operated key is not the response key 58, the CPU 310 determines whether or not the operated key is the hold key 57 (step S39). When it is determined in step S39 that the operated key is the hold key 57, the CPU 310 determines whether or not the own packet telephone 2 is busy (step S40). Assuming that the operation 57 is an erroneous operation, the operation is ignored and the process returns to step S31.

  If it is determined in step S40 that the call is in progress, the CPU 310 determines that the key operation is a self-holding request operation, shifts the own packet telephone 2 to the self-holding state, and informs that effect. The main device unit 1 is notified (step S41). Then, the CPU 310 updates the storage contents of the line state information storage holding unit 327 (step S42), and controls to display the LED 61 of the flexible key FK3, which is a pending key, in a self-holding red blinking state (step S43). Then, the process returns to step S31.

  When it is determined in step S39 that the operated key is not the hold key 58, it is determined whether or not the operated key is one of the flexible keys FK1 to FK4 (step S51 in FIG. 17). When it is determined in step S51 that the key is not one of the flexible keys FK1 to FK4, the CPU 310 determines that it is another key operation and executes a process corresponding to the key operation (step S52).

  If it is determined in step S51 that the operated key is one of the flexible keys FK1 to FK4, the CPU 310 determines which of the operated flexible keys is (step S53).

  When it is determined in step S53 that the operated key is the flexible key FK1 that is the incoming key, the CPU 310 determines whether or not the priority order display mode is set (step S54), and the priority order display mode. As shown in FIG. 7 (C), one line consisting of the incoming line number and the incoming call type is regarded as one incoming call line, and the incoming call types are prioritized. Then, the list display of incoming lines is displayed on the LCD display screen 315D (step S55).

  If it is determined in step S54 that the display mode is the non-priority order display mode, as shown in FIG. 7D, the CPU 310 displays one line consisting of the line number of the incoming call and the incoming call type as one incoming call. As a middle line, a list of incoming lines is displayed on the LCD display screen 315D in the order of line numbers (step S56).

  Then, after step S55 and step S56, CPU 310 proceeds to step S57, and determines whether or not only one line is receiving a call. When it is determined that only one line is receiving a call, the CPU 310 jumps to step S34 to regard the pressing operation of the flexible key FK1 as an incoming call response operation, and to enter an incoming call response process and a call state. Subsequent processing is performed. Then, the CPU 310 executes the processes after step S34 described above.

  When determining in step S57 that only one line is receiving a call, the CPU 310 determines whether the up key 52 or the down key 53 has been operated (step S58), and the up key 52 or the down key 53. When it is determined that the selected cursor display 70 has been operated, the selected cursor display 70 is moved by one line in the direction designated by the up key 52 or the down key 53, and the line displayed in the moved one line is selected (see FIG. Then, it is determined whether or not the enter key 56 has been operated (step S60).

  If it is determined in step S57 that the upper key 52 or the lower key 53 has not been operated, the CPU 310 bypasses step S59 and proceeds to step S60 to determine whether or not the enter key 56 has been operated.

  When the CPU 310 determines in step S60 that the enter key 56 has been operated, the CPU 310 determines that the operation is an operation for taking an incoming call on the selected incoming line, and proceeds to step S34 to execute the step described above. The process after S34 is executed.

  If CPU 310 determines in step S60 that determination key 56 has not been operated, CPU 310 determines whether or not flexible key FK1 as an incoming key has been operated again (step S61), and flexible key FK1 is operated again. If it is determined that it is not, the process returns to step S58.

  If it is determined in step S61 that the flexible key FK1 has been re-operated, the CPU 310 deletes the list of incoming calls displayed on the LCD display screen 315D, as shown in FIG. 7B. The incoming call is displayed by the LED 61 of the flexible key FK1, and the display control is performed so that “incoming” is displayed as characters as the key assignment display symbol 62 corresponding to the flexible key FK1 of the LCD display screen 315D (step S62). Then, the process returns to step S31.

  Next, when it is determined in step S53 that the operated flexible key is the flexible key FK2, the CPU 310 turns on the LED 61 of the flexible key FK2 in green (step S71 in FIG. 18), and displays a list of available external lines. Whether or not the priority order display mode is set is determined (step S72).

  If it is determined in step S72 that the priority order display mode is set, the CPU 310 sets one line consisting of the line number of the idle state and the line type as 1 as shown in FIG. As one free line, a list display of free lines according to the priority order of the line types is displayed on the LCD display screen 315D (step S73).

  If it is determined in step S72 that the display mode is the non-priority order display mode, the CPU 310, as shown in FIG. As a line, a list of empty lines is displayed on the LCD display screen 315D in the order of line numbers (step S74).

  Then, after step S73 and step S74, CPU 310 proceeds to step S75, and determines whether or not there is only one free line. When it is determined that there is not only one free line, the CPU 310 determines whether the up key 52 or the down key 53 has been operated (step S76), and determines that the up key 52 or the down key 53 has been operated. If so, the selected cursor display 70 is moved by one line in the direction designated by the up key 52 or the down key 53, and the line displayed on the moved one line is selected (step S77). Then, it is determined whether or not the enter key 56 has been operated (step S78).

  If it is determined in step S76 that the upper key 52 or the lower key 53 has not been operated, the CPU 310 bypasses step S77 and proceeds to step S78 to determine whether or not the enter key 56 has been operated.

  When the CPU 310 determines in step S78 that the enter key 56 has been operated, the CPU 310 determines that the operation is an operation for requesting acquisition of the selected free line, and captures the line including the line identification information. Sends a request to the main unit 1 to perform external line acquisition processing of the vacant line, receives a completion notification from the main unit 1 in response to the acquisition request, performs dial processing, and transmits an external line through the acquired line (Step S79), and then an outside line call is processed (step S80).

  Next, the CPU 310 determines whether or not the call has ended (step S81). When determining that the call has ended, the CPU 310 sends an end-call notification including identification information of the line that has ended to the main unit 1. Then, the stored information in the line state information storage holding unit 327 is updated to perform the call end process (step S82).

  Then, the CPU 310 turns off the LED 61 of the flexible key FK2, stops the display indicating that the external line is being used (step S83), and then refers to the stored content of the line state information storage holding unit 327 at that time, and displays the LCD. The display contents of the display screen 315D and the display states of the LEDs 61 of the flexible keys FK1 to FK4 are determined according to the stored contents (step S84). Then, the process returns to step S31.

  If it is determined in step S75 that there is only one free line, the CPU 310 jumps to step S79, immediately performs an outside line capturing process, and executes the above-described processes after step S79.

  If it is determined in step S78 that the enter key 56 has not been operated, it is determined whether or not the flexible key FK2 that is an outside line key has been operated again (step S85), and the flexible key FK2 has not been operated again. When it is determined, the process returns to step S76.

  If it is determined in step S85 that the flexible key FK2 has been operated again, the CPU 310 erases the list of empty lines displayed on the LCD display screen 315D and turns off the LED 61 of the flexible key FK2. Then, as shown in FIG. 8B, display control is performed so that “outer line” is displayed as characters as the key assignment display symbol 62 corresponding to the flexible key FK2 of the LCD display screen 315D (step S86). Then, the process returns to step S31.

  If it is determined in step S53 that the operated flexible key is the flexible key FK3 that is a pending key, the CPU 310 turns on the LED 61 of the flexible key FK3 in green (step S91 in FIG. 19), and holds it. It is determined whether or not the priority order display mode is set for the middle line list display (step S92).

  When it is determined in step S92 that the priority order display mode is set, as shown in FIG. 10 (C), the CPU 310 sets 1 line consisting of the line number and the hold type that are on hold. As one line on hold, a list display of lines on hold according to the priority order of the hold type is displayed on the LCD display screen 315D (step S93).

  If it is determined in step S92 that the display mode is the non-priority order display mode, the CPU 310, as shown in FIG. 10D, displays one line consisting of the line number of the line on hold and its hold type as one line. As a pending line, a list of pending lines is displayed on the LCD display screen 315D in the order of line numbers (step S94).

  Then, after step S93 and step S94, the CPU 310 proceeds to step S95, and determines whether or not the pending line is only one line. When it is determined that the line on hold is not only one line, the CPU 310 determines whether or not the up key 52 or the down key 53 has been operated (step S96), and the up key 52 or the down key 53 has been operated. When it is determined, the selected cursor display 70 is moved by one line in the direction designated by the up key 52 or the down key 53, and the line displayed on the moved one line is selected (step S97). Thereafter, it is determined whether or not the enter key 56 has been operated (step S98).

  If it is determined in step S96 that the upper key 52 or the lower key 53 has not been operated, the CPU 310 bypasses step S97 and proceeds to step S98 to determine whether or not the enter key 56 has been operated.

  When CPU 310 determines in step S98 that determination key 56 has been operated, CPU 310 determines that the operation is a hold release request operation for a pending line, and displays a list of pending lines on LCD display screen 315D. In addition to erasure, a hold release request for the line including the line identification information is sent to the main unit 1 to perform hold release processing for the line on hold (step S99), and then processing for an outside line call is performed (step S99). S100).

  Next, the CPU 310 determines whether or not the call has ended (step S101). When determining that the call has ended, the CPU 310 sends an end-call notification including identification information of the line that has ended to the main apparatus unit 1. Then, the stored information in the line state information storage holding unit 327 is updated to perform the end of call processing (step S102).

  The CPU 310 turns off the green LED 61 of the flexible key FK3 (step S103), and then refers to the content stored in the line state information storage unit 327 at that time to display the content displayed on the LCD display screen 315D. The display states of the LEDs 61 of the flexible keys FK1 to FK4 are determined according to the stored contents (step S104). Then, the process returns to step S31.

  If it is determined in step S95 that there is only one line on hold, the CPU 310 jumps to step S99 to immediately perform hold release processing, and executes the above-described processing after step S99.

  If it is determined in step S98 that the enter key 56 has not been operated, it is determined whether or not the flexible key FK3 that is the pending key has been operated again (step S105), and the flexible key FK3 has not been operated again. Is determined, the process returns to step S96.

  If it is determined in step S105 that the flexible key FK3 has been re-operated, the CPU 310 deletes the list of lines on hold displayed on the LCD display screen 315D, and the LED 61 of the flexible key FK3 is lit in green. Is turned off and the LED 61 is returned to the flashing red display of the on-hold display, and as the key assignment display symbol 62 corresponding to the flexible key FK3 on the LCD display screen 315D as shown in FIG. "Is controlled to be displayed in a character display state (step S106). Then, the process returns to step S31.

  If it is determined in step S53 that the operated flexible key is the flexible key FK4 which is a function key, the CPU 310 lights the LED 61 of the flexible key FK4 in green (step S111 in FIG. 20), and the flexible key It is determined whether or not the priority order display mode is set for the list display of the functions assigned to the key FK4 (step S112).

  When it is determined in step S112 that the priority order display mode is set, the CPU 310 refers to the function assigned to the flexible key FK4 of the flexible key setting storage holding unit 328 and the usage frequency information. As shown in FIG. 13A, the function list and the function type (function name) corresponding to the function number (function name) are used as one function display, and the function list is displayed in order of priority based on the frequency of use. Then, it is displayed on the LCD display screen 315D (step S113).

  If it is determined in step S112 that the display mode is the non-priority order display mode, the CPU 310 sets one line consisting of the function number and the function type (function name) as one line as shown in FIG. As a function display, a list of functions in the order of function numbers is displayed on the LCD display screen 315D (step S114).

  Then, after step S113 and step S114, CPU 310 proceeds to step S115, and determines whether or not there is only one function set in flexible key FK4. When it is determined that there is not only one function set, the CPU 310 determines whether the up key 52 or the down key 53 is operated (step S116), and the up key 52 or the down key 53 is operated. When it is determined that the selected cursor display 70 is moved, the selected cursor display 70 is moved by one line in the direction designated by the up key 52 or the down key 53, and the function displayed in the moved one line is selected (step S117). Thereafter, it is determined whether or not the enter key 56 has been operated (step S118).

  If it is determined in step S116 that the upper key 52 or the lower key 53 has not been operated, the CPU 310 bypasses step S117 and proceeds to step S118 to determine whether or not the enter key 56 has been operated.

  When CPU 310 determines in step S118 that determination key 56 has been operated, CPU 310 determines that the operation is a function execution request operation being selected, and erases the list of functions displayed on LCD display screen 315D. At the same time, the process proceeds to a process routine for executing a process corresponding to the selected function (step S119).

  If it is determined in step S115 that only one function is set, the CPU 310 jumps to step S119 and immediately shifts to a processing routine for executing processing corresponding to the function.

  In step S119, for example, if the selected function is a one-touch function, the telephone number stored in the flexible key setting storage holding unit 328 corresponding to the function is read, and a call using the telephone number is made. Processing is done.

  If it is determined in step S118 that the enter key 56 has not been operated, it is determined whether or not the flexible key FK4, which is a function key, has been operated again (step S120), and the flexible key FK4 has not been operated again. When it is determined, the process returns to step S116.

  If it is determined in step S120 that the flexible key FK4 has been operated again, the CPU 310 erases the function list displayed on the LCD display screen 315D and turns off the green LED 61 of the flexible key FK4. Then, as shown in FIG. 12B, display control is performed so that “function” is displayed as characters as the key assignment display symbol 62 corresponding to the flexible key FK4 of the LCD display screen 315D (step S121). Then, the process returns to step S31.

  As described above, in this embodiment, when a line state or function is assigned and set to a flexible key in units of groups, and the flexible key is operated, a list of line groups that are in the assigned line state. Since a list of function groups is displayed, it is possible to realize a packet telephone that can support a large number of lines and functions even with a small number of keys.

  In particular, as in the above-described embodiment, by assigning one flexible key to an outside line available state, a packet telephone user can easily find an available line by operating the flexible key. There is an advantage that it is not necessary to indicate that the outside line is being used on the packet telephone. For this reason, it is not necessary to turn on the LED for displaying that another person is in use, and the power consumption can be reduced accordingly.

  In addition, in the telephone communication terminal which is a packet telephone of this example, a display corresponding to the flexible key is displayed on a display screen such as an LCD, and the line state and various functions are associated with the display corresponding to the flexible key. Since it is set, there is also an advantage that it is easy to understand.

  Further, in the above-described embodiment, the LED 61 is provided in each of the flexible keys FK1 to FK4, and the same incoming call display, on-hold display, and the like are performed together by lighting and flashing display thereof. The user can use it in the same way as before and is easy to use.

[Other Embodiments and Modifications]
In the above embodiment, the LED 61 is provided as a light emitting element for each of the plurality of flexible keys, but it goes without saying that the light emitting element is not limited to the LED.

  Moreover, it is not necessary to provide light emitting elements, such as LED, with respect to each of a some flexible key. In that case, using the display form such as the color, lighting, blinking, etc. of the corresponding key assignment display symbol 62 on the LCD screen 315D, the line status changes such as the incoming call display, the on-hold display, the outside line is being captured or the function is being used. Etc. may be displayed.

  In the above-described embodiment, the line status and function characters are displayed as the key assignment display symbols 62 on the LCD display screen 315D corresponding to each of the plurality of flexible keys. In addition, a graphic display corresponding to each line state and function may be displayed as the key assignment display symbol 62.

  In the above-described embodiment, the key assignment display symbols 62 corresponding to each of the plurality of flexible keys are displayed on the LCD display screen 315D when there is a corresponding line state or a corresponding function. However, as shown in FIG. 21, the key assignment display symbol 62 may be displayed at all times corresponding to each of the flexible keys FK1 to FK4. In that case, it is preferable to provide a light emitting element such as an LED corresponding to each of the flexible keys so that the LED can display in accordance with the change of the line state or the usage state.

  In the above-described embodiment, the key assignment display symbol 62 corresponding to each of the plurality of flexible keys is not displayed when there is no line in the corresponding line state or when the corresponding function is not set. Displayed but not displayed but displayed as a dotted line as shown in FIG. 22 or displayed lighter than the key setting symbol 22 corresponding to another flexible key. Also good.

  In addition, for example, an index sheet can be installed corresponding to each of the flexible keys, and the user can describe the line status and function allocated to the index sheet, so that the key assignment of the LCD screen 315D can be performed. The display symbol 62 may be omitted.

  In addition, when the line status and function are fixedly assigned in advance to a plurality of flexible keys, the assigned line status and function characters are applied to each of the flexible keys by printing or the like. May be.

  Further, each of the flexible keys is not configured by a push button key as in the above-described example, but the LCD screen 315D is configured as a touch panel, and the LCD screen 315D is flexible on the screen as shown in FIG. The keys FK11 to FK14 may be displayed.

  In the case of the example of FIG. 23, when any one of the flexible keys FK11 to FK14 on the LCD screen 315D is pressed, the corresponding list display screen as described above is displayed on the LCD screen 315D. The user can select a desired line or function by touching the line.

  In the example of FIG. 23, the flexible keys FK11 to FK14 on the LCD screen 315D are not displayed when there is a line state such as no incoming call, no hold, or no outside line available. As a result, there is an advantage that the user does not perform an erroneous operation.

  Further, in the above-described embodiment, when there is only one line in the line state assigned to the flexible key, or when there is one function assigned to the flexible key, each flexible key is Although it automatically works as an incoming call response key, an outside line capturing key, and a hold release key, it may be made to work only when the user presets as such.

  In this case, if the user does not preset, the same processing request is made by pressing the flexible key, confirming the content on the LCD display screen, and then pressing the enter key.

  In the above embodiment, the flexible key FK4 is assigned and set with a plurality of different types of functions. However, for the functions that can be grouped, the flexible key is assigned and set for each of them. May be. For example, one function can be assigned to one flexible key, and a group of voice mail playback functions can be assigned to another flexible key. It may be assigned to one flexible key.

  Needless to say, the list display in the figure is merely an example, and the present invention is not limited to this. In addition, it is not necessary to display a list of all lines and functions at once on the display screen 315D. By scrolling or changing pages (when multiple pages are used), more lines and functions can be displayed. A list can be displayed.

  The cursor display is not limited to the underbar, and various modes such as an enclosing display of each line in the list display, a black and white reverse display, and a color display of the surrounding area of each one line 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 including the display screen 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.

  Further, the above is an example in which the present invention is applied to a packet telephone in a business phone system using a wireless LAN. However, the present invention provides a connection between a main unit and each telephone terminal via a conventional connection cable. The present invention can also be applied to a telephone terminal in a business phone system to be connected.

  Further, in the above-described embodiment, all of the three line states of incoming call, outside line free state, and on-hold are assigned to the three flexible keys. However, all of the three line states must be assigned. Not a translation. For example, in the case of a business phone system that can only hold itself and does not have a hold transfer function, it is not necessary to assign a line group in the hold state to the flexible key.

  Note that the priority order in the line status and function list display of the above-described embodiment is merely an example, and is not limited to this. In the above description, the priority order is set in advance, but the user can also set the priority order.

It is a block diagram which shows the structural example of the business phone system which uses embodiment of the telephone 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 telephone 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 telephone communication terminal by this invention. FIG. 5 is a diagram for explaining an example of storage contents of a line state information storage holding unit 327 in FIG. 4. It is a figure which shows the example of a display in the packet telephone as an embodiment of the telephone communication terminal by this invention. It is a figure which shows the example of a display in the packet telephone as an embodiment of the telephone communication terminal by this invention. It is a figure which shows the example of a display in the packet telephone as an embodiment of the telephone communication terminal by this invention. It is a figure which shows the example of a display in the packet telephone as an embodiment of the telephone communication terminal by this invention. FIG. 5 is a diagram for explaining an example of storage contents of a flexible key setting storage holding unit 328 in FIG. 4. It is a figure which shows the example of a display in the packet telephone as an embodiment of the telephone communication terminal by this invention. It is a figure which shows the example of a display in the packet telephone as an embodiment of the telephone 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 telephone 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 telephone 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 telephone 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 telephone 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 telephone 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 telephone communication terminal by this invention. It is a figure which shows the other example of a display in the packet telephone as an embodiment of the telephone communication terminal by this invention. It is a figure which shows the other example of a display in the packet telephone as an embodiment of the telephone communication terminal by this invention. It is a figure which shows the other example of a display in the packet telephone as an embodiment of the telephone 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 ... Wireless LAN terminal side station apparatus part, 30 ... Telephone part, 40 ... Battery, 327 ... Line state memory holding part, 328 ... Flexible key setting memory holding unit, FK1 to FK4 ... Flexible key

Claims (1)

In a telephone communication terminal that is connected through a communication path to a main unit that can accommodate a plurality of communication lines and performs communication through the communication line,
An operation key to which the line state of the communication line is assigned;
A display element comprising a display screen;
When the operation key is operated, a list of the communication lines in the line state assigned to the operation key is determined in advance for the type related to the line state by the list of types related to the line state. When there are a plurality of communication lines that are in the assigned line state and are displayed on the display screen in order of priority, the communication line that is selected when the enter key is operated is displayed. Select and execute a processing operation corresponding to the line state, and when there is one communication line in the assigned line state, the operation key is operated without operating the determination key. Control means for selecting the one communication line by the control unit to perform a processing operation corresponding to the line state;
A telephone communication terminal comprising:

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