JP3804501B2 - Network switching system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is constructed by a communication terminal and a base station by low-power wireless communication means such as a wireless LAN, Bluetooth, and PHS protocol.TThe present invention relates to a network switching system for connecting local wireless switching networks by a wireless network.
[0002]
[Prior art]
A general private branch exchange network (PBX system) is constructed by drawing an extension telephone network around a private branch exchange and installing one extension telephone at the end of the extension telephone network. On the other hand, in recent years, a system for constructing a private branch exchange network by applying so-called VoIP (Voice Over IP), which uses an IP network and makes a call by transmitting packetized voice, has begun to spread. According to the private branch exchange network to which this VoIP is applied, since the LAN existing in the company is used, the installation cost of the extension telephone cable can be reduced, and since it passes through the IP network such as the Internet, it is not connected to the outside. There are merits such as the call cost is basically free.
[0003]
The local wireless switching network is mainly a local wireless switching network base station that functions as a base station function of a wireless network and a function as a private branch exchange that controls a link with a subordinate extension communication terminal by wireless or wired communication means. A small-scale private branch exchange network built in the past, connecting an IP network to the backbone network, By adopting a standard protocol such as H.323, VoIP is used for connection to an external line. By using this local wireless switching network, it is possible to easily deploy a service that enables easy extension connection by wireless and connection to the outside line with significantly improved communication costs by VoIP to each home or large and small office. it can.
[0004]
This is because, in recent years, the constant connection type Internet connection has been widely spread to homes and offices at a low price, and it is becoming possible to significantly reduce the communication cost. Also, the Internet connection has become broadband and VoIP. The fact that it is becoming easier to secure the bandwidth necessary to perform this is also a tailwind of popularization. In addition, by applying a local wireless switching network, a company or the like can construct a company-wide large-scale private branch switching network.
[0005]
As described above, since the local wireless switching network uses an IP network as a backbone network, if an existing in-house LAN is applied, a telephone network with company-wide cable wiring in an enterprise such as a conventional private branch exchange network is constructed. There is no need, and a local wireless switching network can be independently constructed as a minimum unit subdivided into micro areas for each group or department, and a company-wide macro switching network can be constructed as an aggregate. For this purpose, one or more representative telephone numbers are assigned to a base station with a local wireless switching network connected via an IP network (Internet) as a minimum unit, and assigned to each terminal on the IP network. By providing a control server that manages the association with IP addresses, it is possible to expand to a large-scale system.
[0006]
In addition, security can be ensured between the local wireless switching networks of each group scattered on the IP network in this way by using protocol means for authenticating each group. Similarly, in addition to the construction of a company-wide private branch exchange network using the above-mentioned local wireless exchange network, the local wireless exchange networks constructed in homes and large and small offices are connected by the Internet, which is an IP network, so that a larger-scale global network exchange is possible. It is also possible to build a system.
[0007]
[Problems to be solved by the invention]
In a network switching system constructed by connecting a plurality of such local wireless switching networks to an IP network, wireless telephones and communication devices (hereinafter collectively referred to as communication terminals) inside the local wireless switching network from outside the local wireless switching network. The IP address and telephone number can be assigned to the extension communication terminal only when the wireless section in the local wireless switching network is based on an IP network such as a wireless LAN. By being under the control of the server, it was possible to make a direct call by telephone number.
[0009]
In addition, the wireless section of the local wireless switching network is not necessarily a wireless LAN, but often adopts Bluetooth, PHS protocol, and cordless telephone connection. Communication terminals under the local wireless switching network are under the control of the control server. There was a problem that it was common to adopt an extension telephone number system without entering.
[0010]
Further, if the extension number is already known, it is possible to make a call by a subaddress system in which the extension number assigned to the extension communication terminal is connected to the representative telephone number of the local radio switching network base station. However, there is a problem of confidentiality in the company, and there is a problem of privacy in the home, so the extension telephone number is often not made public. For this reason, when a call is made from the outside to the extension communication terminal in the local wireless switching network, it is normally performed to the representative telephone number, and the extension communication terminal set as a priority incoming call in the local wireless switching network The operator responded to the call, and the target user was followed by manual operation such as transfer. However, intermediaries by operators have the problem that labor costs are incurred when hiring a full-time operator. However, as is often seen in companies, the operator who relays the telephone in each department is not a full-time employee, and the employee is the operator. There was a problem that the trouble to the original business occurred when he served concurrently.
[0011]
In order to solve the above-described problems, in the present invention, an index screen described in, for example, HTML language, Compact-HTML language, Java (registered trademark) language, or the like is set in the local wireless switching network base station. When a call is received from the outside to the local wireless switching network, instead of the operator answering, the file constituting the index screen is transmitted to the caller communication terminal, and the browser function of the caller communication terminal is By displaying, the purpose is to make a representative telephone response instead of an operator response.
[0012]
In addition, the user of the caller communication terminal himself / herself selects an item indicating the extension communication terminal that he / she wishes to talk or communicate from the index screen. It is an object of the wireless switching network to automatically transfer a stored call to a target communication terminal to replace the operator's manual transfer.
[0013]
The index screen is transferred to an external communication terminal that is a call destination even when a call is made from a communication terminal in the local wireless switching network, depending on the service content.
[0014]
[Means for Solving the Problems]
  To solve the above-mentioned problems, the present inventionProvides the following system.
  A first local wireless switching network having one or more first wireless communication terminals and a first base station that performs wireless communication with the first wireless communication terminals;
  And at least a second local wireless switching network having one or more second wireless communication terminals and a second base station that performs wireless communication with the second wireless communication terminals,
  A network switching system in which the first base station and the second base station are connected by a network, and a telephone call and / or data communication is performed between the first wireless communication terminal and the second wireless communication terminal In
  The first base station includes storage means for storing a file constituting an index screen for designating a call destination for performing a call and / or data communication with the first wireless communication terminal, and the second base station. In response to an index file transfer request from the wireless communication terminal, the file constituting the index screen is transmitted to the second wireless communication terminal,
  The second wireless communication terminal receives a file constituting the index screen via the second base station, displays the index screen,
  A network that establishes communication and / or data communication between the first wireless communication terminal selected using the index screen displayed on the second wireless communication terminal and the second wireless communication terminal An exchange system,
  When the first base station transmits a file constituting the index screen, the first base station determines an information disclosure level by performing authentication with a second wireless communication terminal as a transmission destination, and displays the index screen. A network switching system comprising: selecting one file from a plurality of files prepared as constituent files according to the information disclosure level, and transmitting the selected file as a file constituting the index screen.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a network switching system according to the present invention will be described with reference to the drawings.Toexplain about. FIG. 1 relates to the present invention.RuIt is a block diagram which shows the model of a network switching system.
[0023]
The first local wireless switching network 1 and the second local wireless switching network 10 are small-scale built in the area of the radio wave reach range by low power wireless communication means such as wireless LAN, Bluetooth, and PHS protocol. It is a private branch exchange network. The first local radio exchange network base station 2 which is a base station of the first local radio exchange network 1 and the second local radio exchange network base station 9 which is a base station of the second local radio exchange network 10 are: In addition to functioning as a base station for the low-power wireless communication means, it also manages and controls line switching and connection to external lines of extension communication terminals belonging to the local wireless switching networks 1 and 10 as private branch exchange network switches.
[0024]
Although not shown, the local radio switching network base station is installed as a plurality of slave base stations in addition to the master base station, thereby supporting handover between base stations and increasing the number of extension communication terminals. It is also possible to deal with the expansion of the area covered.
[0025]
The first local wireless switching network 1 includes the first local wireless switching network base station 2 as a parent device in the wireless section, and the wireless telephone 3, the wireless telephone 4, the wireless telephone 5, and the wireless network camera 6 as the child devices in the wireless section. Is built as.
[0026]
The second local wireless switching network 10 includes the second local wireless switching network base station 9 as a base unit in the wireless section, the wireless telephone 11, the wireless telephone 12, and the personal computer 13 as slave units in the wireless section, and further wired. It is constructed by connecting the fixed telephone 14 by wire.
[0027]
The wireless telephone 3 is owned by the user 20, the wireless telephone 5 is owned by the user 22, the wireless telephone 11 is owned by the user 21, and the wireless network camera 6 captures the product sample 23 as an image.
[0028]
Further, the first local radio exchange network base station 2 and the second local radio exchange network base station 9 are connected via the IP network 7 which is the Internet, and the control server 8 connected to the IP network 7 It has been extended to a wide area network switching system by management control.
[0029]
The network switching system has a unique telephone number system that has a one-to-one relationship with an IP address, and is managed by a first local radio switching network base station 2 and a second local radio switching network base. One or more representative telephone numbers are assigned to the station 9. On the other hand, the extension number uniquely assigned in each local radio exchange network is assigned to the extension communication terminals belonging to each local radio exchange network 1 and 10.
[0030]
In order to maintain the above telephone number system, the control server 8 stores an address list (FIG. 2) that manages the correspondence between the representative telephone numbers of the local radio switching network base stations 2 and 9 and the IP addresses. Yes.
[0031]
The control server 8 can also perform circuit switching control as a switch in the network switching system. However, in this embodiment, since the IP network is used for the backbone network, two local wireless switching network base stations are used. The link control between 2 and 9 and packet communication are performed directly between the two using TCP / IP or UDP / IP protocol. This also has the effect of reducing the processing load on the control server 8.
[0032]
In the following, using the sequence diagrams of FIGS. 1, 5, and 6, the radio telephone 11 in the second local radio exchange network 10 calls and the radio telephone 3 in the first local radio exchange network 1 arrives. A sequence according to the present invention will be described through a connection operation until a call is made.
[0033]
When the user 21 of the wireless telephone 11 has a request for the user 20 and tries to place a call, if the extension telephone number of the wireless telephone 3 used by the user 20 is unknown, the user 21 A call is started by the representative telephone number of the network switching system assigned to the switching network base station 2.
[0034]
In the sequence diagram of FIG. 5, the wireless telephone 11 includes a call control request 100 including the representative telephone number of the first local wireless switching network base station 2 as a destination address in the wireless communication means of the second local wireless switching network 10 ( (Not shown).
[0035]
When the second local radio switching network base station 9 receives the call control request 100 described above, the extension determination means 150 determines the second local radio switching network management from the representative telephone number that is the destination address of the call control request 100. A list (not shown) is searched to determine whether a representative telephone number that is the destination address is registered. The second local radio exchange network management list is a list file in which extension numbers assigned to communication terminals such as radio telephones subordinate to the second local radio exchange network 10 are described. The local wireless switching network base station 9 has.
[0036]
The extension determination means 150 performs call control (not shown) into the second local wireless switching network 10 when it is registered in the second local wireless switching network management file. If there is no registration in the extension number management list, it is determined that the call is not made to the second local wireless switching network 10.
[0037]
On the other hand, when the second local radio switching network base station 9 determines that the call is to be made outside the second local radio switching network 10, the second control station 8 receives the call control request 100 as the destination address of the call control request 100. An IP packetized number inquiry request 101 having the set representative telephone number as an additional information element is transmitted. The control server 8 manages the local radio switching network base stations 2 and 9 on the IP network 7. In the second local radio exchange network base station 9, the IP address on the IP network 7 of the control server 8 is known.
[0038]
When the control server 8 receives the number inquiry request 101, the first local wireless exchange received by the number inquiry request 101 is referred to by referring to the address list shown in FIG. 2 managed by a recording means (not shown). The IP address is searched from the representative telephone number of the network base station 2. The address list shown in FIG. 2 has a unique numbering system for each of the local wireless switching network base stations 2 and 9 on the IP network 7 and is used for a wireless telephone or the like used by a user who is a caller. A local radio switching network base station telephone number 51 of the local radio switching network base station to which the communication terminal belongs, and each local radio switching network base station IP address 52 on the IP network 7 to which the local radio switching network base station is connected; The association of is recorded.
[0039]
Then, the control server 8 obtains the corresponding IP address from the address list shown in FIG. 2, and receives the inquiry notification 102 having the IP address of the first local wireless switching network base station 2 as an information element. The data is transmitted to the second local radio exchange network base station 9.
[0040]
Next, when the second local wireless switching network base station 9 receives the inquiry notification 102, the second local wireless switching network base station 9 assigns an IP address as additional information of the inquiry notification 102 to the first address. Obtained as the IP address of the local wireless switching network base station 2.
[0041]
Further, the second local wireless switching network base station 9 generates a call control request 103 in which the call control request 100 is converted into an IP packet by using the acquired IP address, and the first local wireless network base station 9 on the IP network 7 The call control request 103 is sent to the radio switching network base station 2. Although not particularly illustrated, the call control method and the call method in the IP network 7 are described in, for example, H.264. The H.323 protocol may be used.
[0042]
Next, when the first local wireless switching network base station 2 receives the call control request 103, the extension determination means 151 determines the first local from the representative telephone number which is the destination address of the information element of the call control request 103. A wireless switching network management list (not shown) is searched to check whether the representative telephone number that is the destination address is registered.
[0043]
Further, the extension determining means 151 retrieves a representative telephone number that is a destination address that is an information element of the call control request 103 from the first local wireless switching network management list (not shown), and the representative telephone number Is registered, it is determined that the call is in the first local wireless switching network 1.
[0044]
On the other hand, when the first local radio switching network base station 2 determines that the incoming call is in the first local radio switching network 1, the first local radio switching network management list (not shown) is used to A call 104 is sent to the wireless telephone 5 registered as a priority extension number for the representative telephone number in the local wireless switching network 1. Further, the first local radio exchange network base station 2 sends a calling 105 to the second local radio exchange network base station 9. The first local wireless switching network management list (not shown) is a list file describing extension numbers of telephones and the like in the first local wireless switching network 1, and a list portion of representative telephone numbers Describes the extension number of the associated wireless telephone to be preferentially called.
[0045]
When the second local wireless switching network base station 9 receives the calling 105, the second local wireless switching network base station 9 sends the calling 106 to the wireless telephone 11 by the wireless communication means in the second local wireless switching network 10. When the wireless telephone 11 receives the calling 106, the wireless telephone 11 notifies the user 21 that the calling is in progress by a calling notification means 153 such as ringing ring tone.
[0046]
Next, when the wireless telephone 5 receives the calling 104 by the wireless communication means in the first local wireless switching network 1, the wireless telephone 5 notifies the user 22 as an operator by the call notification means 152 such as Ringer. The user 22 receives a notification from the call notification unit 152 of the wireless telephone 5 and receives an incoming call by an incoming call operation such as pressing the call button of the wireless telephone 5. The wireless telephone 5 sends out a connection 107 to the first local wireless switching network base station 2 in response to an incoming call operation of the user 22.
[0047]
The first local radio exchange network base station 2 that has received this connection 107 sends out a connection 108 in which the connection 107 is converted into an IP packet to the second local radio exchange network base station 9. When the second local wireless switching network base station 9 receives the connection 108, the connection 109 is transmitted to the wireless telephone 11 by the wireless communication means in the second local wireless switching network 10.
[0048]
Thus, the call control sequence is completed, and a telephone call 170 is established between the wireless telephone 11 and the wireless telephone 5, and a telephone conversation between the user 21 and the user 22 becomes possible.
[0049]
Thus, the sequence diagram will be described with reference to FIG. After the establishment of the telephone call 170, the user 21 requests the user 22, who is an operator, to relay to the user 20 in the same first local wireless switching network 1. When the user 22 of the radio telephone 5 performs a transfer operation to the radio telephone 3 used by the user 20, the radio telephone 5 sends out a transfer 110 to the first local radio exchange network base station 2.
[0050]
When the first local wireless switching network base station 2 receives the transfer 110 by the wireless communication means in the first local wireless switching network 1, the first local wireless switching network base station 2 keeps the call by the holding means 154 and connects the wireless telephone 11 and the wireless telephone 5. The telephone call 170 is switched to the telephone call 171 as a custody call between the wireless telephone 11 and the first local wireless switching network base station 2. In the call 171, the hold tone data is sent from the first local radio exchange network base station 2 to the radio telephone 11.
[0051]
Next, the user 22 inputs the extension number of the transfer destination wireless telephone 3 to the wireless telephone 5. After this input, by a call operation such as pressing the call button of the radio telephone 5, the radio telephone 5 makes a call control request 111 having an information element whose extension number is the destination address as the first local radio exchange. Send to network base station 2.
[0052]
When the first local radio exchange network base station 2 receives the call control request 111, the first local radio exchange network management file (not shown) uses the destination address to determine the extension determination means 155. The extension number of the wireless telephone 3 that is the information element is searched from the first local wireless switching network management file (not shown), the presence / absence of registration is determined. 112 is sent out.
[0053]
The extension determination means 155 searches the first local radio exchange network from the first local radio exchange network management list (not shown) for an extension number that is the destination address of the information element of the call control request 111. 1 is used to determine the presence or absence of registration.
[0054]
When the wireless telephone 3 receives the call 112 from the first local wireless switching network base station 2, it notifies the user 20 by the call notification means 156 such as Ringer.
[0055]
Also, the first local radio exchange network base station 2 sends a calling 113 to the radio telephone 5. The wireless telephone 5 that has received the calling 113 notifies the user 22 that the calling is in progress by a calling notification means 157 such as ringing ring tone.
[0056]
When the user 20 accepts an incoming call by pressing the call button of the wireless telephone 3 or the like, the wireless telephone 3 sends out a connection 114 to the first local wireless switching network base station 2. In addition, the first local wireless switching network base station 2 that has received the connection 114 sends out the connection 115 to the wireless telephone 5. With this sequence, a telephone call 172 between the wireless telephone 5 and the wireless telephone 3 is established.
[0057]
Using the telephone call 172, the user 22 who is an operator of the radio telephone 5 notifies the user 20 of the radio telephone 3 of the incoming call from the user 21. After the notification, the user 22 ends the call by a call end operation such as pressing the disconnect button of the wireless telephone 5. The disconnection 116 is sent to the first local radio exchange network base station 2 by the call termination operation of the radio telephone 5. The first local wireless switching network base station 2 that has received the disconnection 116 sets the call 171 that has been kept by the holding means 154 as a call to the wireless telephone 3, and the wireless telephone 11 and the wireless telephone 3 communicate with each other. A call 173 including a call 171 is established between them. As a result, the user 21 using the wireless telephone 11 and the user 20 using the wireless telephone 3 can make a call.
[0058]
Next, as a second embodiment, the operation of the network switching system according to the present invention will be described with reference to FIGS. As in the first embodiment, the user 21 of the radio telephone 11 has an unknown extension telephone number of the radio telephone 3 used by the user 20, and the user 21 is assigned to the first local radio switching network base station 2. Suppose that a call is started by a representative telephone number of the network switching system.
[0059]
In the sequence diagram of FIG. 7, the wireless telephone 11 transmits a call control request 200 including the representative telephone number of the first local wireless switching network base station 2 as a destination address to the wireless communication means of the second local wireless switching network 10. (Not shown).
[0060]
Upon receipt of the call control request 200, the second local radio switched network base station 9 starts the second local radio switched network management list in the extension determination means 250 from the representative telephone number that is the destination address of the call control request 200. (Not shown) is searched to determine whether or not a representative telephone number as the destination address is registered. The second local radio exchange network management list is a list file in which extension numbers assigned to communication terminals such as radio telephones under the second local radio exchange network 10 are described. The wireless switching network base station 9 has.
[0061]
The extension determination means 250 performs call control (not shown) into the second local wireless switching network 10 when it is registered in the second local wireless switching network management file. If there is no registration in the extension number management list, it is determined that the call is not made to the second local wireless switching network 10.
[0062]
When the second local radio exchange network base station 9 determines that the call originates outside the second local radio exchange network 10, it is set as the destination address of the call control request 200 for the known control server 8. An IP packetized number inquiry request 201 having the representative telephone number as an additional information element is transmitted.
[0063]
The control server 8 manages each local radio switching network base station on the IP network 7.
[0064]
In the second local radio exchange network base station 9, the IP address on the IP network 7 of the control server 8 is known. When receiving the number inquiry request 201, the control server 8 refers to the address list of FIG. 2 managed by a recording means (not shown), and receives the first local wireless exchange received by the number inquiry request 201. The IP address is searched from the representative telephone number of the network base station 2. The address list has a unique numbering system for each local radio switching network base station on the IP network 7, and the local list to which a communication terminal such as a radio telephone used by a user who is a caller belongs. The association between the local radio switching network base station telephone number 51 of the radio switching network base station and each local radio switching network base station IP address 52 on the IP network 7 to which the local radio switching network base station is connected was recorded. Is.
[0065]
When the control server 8 obtains the corresponding IP address from the address list of FIG. 2, the control server 8 requests the second notification request 202 that uses the IP address of the first local wireless switching network base station 2 as an information element. Transmit to the local wireless switching network base station 9.
[0066]
Next, when the second local wireless switching network base station 9 receives the inquiry notification 202 from the control server 8, the second local wireless switching network base station 9 receives the IP address as additional information of the inquiry notification 202. Is obtained as the IP address of the first local wireless switching network base station.
[0067]
The second local wireless switching network base station 9 uses the acquired IP address to call control the call control request 200 into an IP packet to the first local wireless switching network base station 2 on the IP network 7. A request 203 is sent out.
[0068]
The additional information elements (not shown) of the call control request 203 are firstly browser-enabled / not-available information, secondly linked terminal setting information, thirdly extension telephone number information of the linked terminal, and fourthly the index screen. The destination IP address information and fifthly, the corresponding language information of the browser function of the cooperative communication terminal is included.
[0069]
Upon receipt of the call control request 203, the first local radio exchange network base station 2 uses the additional information element (not shown) of the call control request 203 to cause the information determination unit 251 to communicate with the browser compatibility information. It is determined whether or not the wireless telephone is a conventional wireless telephone based on the terminal setting information.
[0070]
If the determination result is a conventional wireless telephone, the information determination means 251 establishes a telephone call (170 in FIG. 5) based on the call control according to the sequence of the first example. Otherwise, the information determination means 251 If it is determined that there is a cooperation terminal, the corresponding language information of the browser function is determined, and the connection 204 is transmitted.
[0071]
When receiving the connection 204, the second local radio exchange network base station 9 sends out the connection 205 to the radio telephone 11 by radio communication means in the second local radio exchange network 10 to complete the call control sequence. As a result, a virtual call 270 is established between the first local radio exchange network base station 2 and the radio telephone 11. This virtual call call is a call call in which a connection is made between devices that make a call but an actual voice call is not made.
[0072]
Further, the first local radio exchange network base station 2 has completed the call control sequence for the second local radio exchange network base station 9, but the first local radio exchange network 1 The call control sequence is temporarily suspended.
[0073]
Next, upon receiving the connection 205, the wireless telephone 11 executes the browser function 252 and establishes a connection (not shown) between the wireless telephone 11 already established and the first local wireless switching network base station 2. By using the HTTP protocol communication 271, a file transfer request (not shown) constituting the index screen (FIG. 3) is made to the Web server function 253 of the first local wireless switching network base station 2. The Web server function 253 of the first local wireless switching network base station 2 that has received this transfer request (not shown) similarly stores the storage means (not shown) of the first local wireless switching network base station 2 through the HTTP protocol communication 271. 3), the index screen (FIG. 3) prepared is transferred to the wireless telephone 11.
[0074]
The index screen describing the link destination to the communication terminal in the first local wireless switching network 1 is composed of a file described in Compact-HTML language or an image file such as a GIF image. The link destination is described by an identification number (2000) different from the IP address (192.168.30.100) and the actual extension telephone number, such as “http://192.168.30.100/2000”.
[0075]
In this way, the index screen (FIG. 3) is transferred as a file from the first local wireless switching network base station 2 to the wireless telephone 11. The wireless telephone 11 reconstructs the file constituting the index screen received from the first local wireless switching network base station 2 by the browser function 252 (FIG. 3) and displays it on the liquid crystal screen of its own device. In other words, if the user 21 of the wireless telephone 11 is using the service without being aware of the protocol and the network, it is as if the first local wireless switching network base station 2 of the call destination has automatically answered. An index screen (FIG. 3) is displayed on the screen of the wireless telephone 11 and waits for the user 21 to select a link destination to a communication terminal belonging to the first local wireless switching network.
[0076]
FIG. 3 is an example of an index screen in the sales section of a trading company that mainly deals with fixed customers. In the example of this screen, since it is an index screen for receiving calls from an unspecified number of people, the names of members in the departments that are confidential to the outside are not disclosed, but are in charge of each company. Note that the menu of the index screen in FIG. 3 is roughly divided into two categories. The first category is “call transfer” 60, and when the first local radio exchange network base station 2 responds and transmits an index screen to the caller, the first local radio exchange network base station 2 This is an interface for the user 21 of the caller wireless telephone 11 to directly select the corresponding item from the index screen in order to select the extension wireless telephone to which the call from the wireless telephone 11 that has been deposited is transferred. The next category is “various processing”, which is a menu for electronic settlement in an environment where transaction settlement and the like are protected by security means.
[0077]
The “call transfer” 60 menu has a line indicating a transfer destination of the call to the extension communication terminal, and an indicator 62 having three types of white circle, black circle, and triangle is marked at the top of the line. The transfer destination of the row marked with a black circle in the indicator 62 is a link between the first local wireless switching network base station 2 and the communication terminal set as the transfer destination in the black circle row. Not showing the situation. That is, when the communication terminal is turned off, or when the communication terminal is in a place where the radio wave condition with the base station is poor, or in a place where the radio wave does not reach, etc. This represents a situation that cannot be answered. The transfer destination in a row with a white circle on the indicator 62 indicates a situation where a link in the radio wave section between the corresponding communication terminal and the base station is established and call transfer can be accepted. The transfer destination in the row marked with a triangle in the indicator 62 indicates a situation where the radio communication link between the corresponding communication terminal and the base station is established, but a call is in progress and call transfer cannot be accepted. .
[0078]
Assume that the user 21 of the wireless telephone 11 wishes to make a call is the user 20 in the first local wireless switching network 1 and is using the wireless telephone 3, and in the index screen of FIG. If “Keihin Minato Kohan Co., Ltd. charge 63” in “Transfer” of “60” corresponds, the user 21 of the wireless telephone 11 moves the cursor to the target line and selects the selection button ( Press (not shown) to select.
[0079]
Since a connection on the IP network has already been established between the wireless telephone 11 and the first local wireless switching network base station 2, the call transfer destination information selected by the protocol means (not shown) is immediately It reaches the first local radio exchange network base station 2. The first local wireless switching network base station 2 that has obtained the call transfer destination information is a user who is in charge of “Keihin Minato Kohan Co., Ltd.” for a call from the radio telephone 11 that is kept at the base station. Calls can be made by relaying and transferring to the wireless telephone 3 used by the wireless telephone 3 by the wireless section sequence in the local wireless switching network 1.
[0080]
A sequence from when the link destination is selected on the index screen displayed on the wireless telephone 11 until a call is established between the wireless telephone 11 and the wireless telephone 3 will be described below with reference to FIGS. 1 and 7. .
[0081]
When the user 21 selects a link destination indicating the wireless telephone 3 from the index screen (FIG. 3) displayed on the browser 252, the wireless telephone 11 uses the HTTP protocol communication 271 as link information to establish the first local wireless switching network base. The selected link information is transferred to the Web server function 253 of the station 2. The web server function 253 of the first local wireless switching network base station 2 passes the link information received by the HTTP protocol communication 271 to the extension number conversion means 254.
[0082]
The extension number conversion means 254 obtains the extension number of the wireless telephone 3 corresponding to the received link information from an extension list (not shown), and the call control sequence interrupted by the connection 204 and the connection 205. To resume.
[0083]
Further, the first local radio exchange network base station 2 sends a call 206 to the radio telephone 3 by radio communication means in the first local radio exchange network 1, and sends the call 206 to the second local radio exchange network base station 9. Even during calling, 207 is transmitted. When the wireless telephone 3 receives the call 207, the wireless telephone 3 notifies the user 20 by a call notification means 255 such as a ringer.
[0084]
When the second local wireless switching network base station 9 receives the calling 207, the second local wireless switching network base station 9 sends the calling 208 to the wireless telephone 11 by the wireless communication means in the second local wireless switching network 10. When the wireless telephone 11 receives the calling 206, the wireless telephone 11 notifies the user 21 by the calling notification means 256 such as a ringback tone.
[0085]
The user 20 that has received a call from the call notification means 255 of the wireless telephone 3 accepts the incoming call by an incoming call operation such as pressing the call button of the wireless telephone 3. The wireless telephone 3 sends out a connection 209 to the first local wireless switching network base station 2 by an incoming call operation of the user 21.
[0086]
When the first local radio exchange network base station 2 receives the connection 209, it sends out a connection 210 to the second local radio exchange network base station 9.
[0087]
Next, when the second local wireless switching network base station 9 receives the connection 210, the second local wireless switching network base station 9 sends out the connection 211 by the wireless communication means in the second local wireless switching network 10.
[0088]
When the wireless telephone 11 receives the connection 211, the wireless telephone 11 ends the calling notification means 256. In addition, the radio telephone 11 terminates the HTTP protocol communication 271 and establishes the call 272 by the call call switching unit 257.
[0089]
As described above, if the user 21 using the browser-compatible wireless telephone 11 knows only the representative telephone number of the user 20, the user 21 in the first local wireless switching network 1 does not need to know the extension telephone number of the user 20. A call with the user 20 using the radio telephone 3 can be made without the user 22 who is the operator of the representative telephone number.
[0090]
Note that the wireless telephone is connected to the HTTP protocol communication 271 and the voice call (virtual call call 270 and call call 272) in the wireless communication means such as the first local wireless switching network 10 and the second local wireless switching network 1. The communication call switching means 257 is not particularly required to be included in the sequence of FIG. 7 if two or more communication connections (not shown) are possible and two or more communications can be used simultaneously.
[0091]
On the other hand, according to this embodiment, each time the wireless telephone 11 makes a call and receives a call to a communication terminal in the first local wireless switching network 1, the index screen file is transferred to the second local wireless switching network. The data is transmitted to the radio telephone 11 through the base station 9, but this can be made more efficient by providing a cache function in the local radio switching network base station.
[0092]
In this embodiment, if there is a cache for storing the index screen in the local radio switching network base station, the first local radio switching network base station 2 responds to the incoming call and the index screen file Instead, the update information of the file is transmitted to the second local wireless switching network base station 9.
[0093]
If the second local wireless switching network base station 9 confirms that the file is the same version as the index screen file stored in the cache by referring to the received file update information of the index screen, If it is notified that it is not necessary to receive the file body from the local wireless switching network base station 2, the index screen stored in the cache in the second local wireless switching network base station 9 is transferred to the wireless telephone 11. Good.
[0094]
According to this method, it is possible to shorten the time until the index screen is transferred to the caller communication terminal, and to reduce traffic on the IP network.
[0095]
Next, as a third embodiment, an example will be described in which an incoming call from outside the company shown in FIG. The index screen illustrated in FIG. 3 is an example of a screen that is sent to the caller when a call is received from the outside to the first local wireless switching network 1, and is constructed by connecting the local wireless switching networks. In the case of a company-wide private network, the local wireless switching networks of each group scattered throughout the company are identified by group authentication protocol means (not shown), or it is determined whether the system is on the same network from the IP address. It is possible to discriminate whether the caller is inside or outside the company by various means such as identification of a group by means of performing the identification, or identification by simple telephone number.
[0096]
Furthermore, even if the caller is outside the company, there may be a department where the caller is a family member of the called party, or even in the company, information leakage should be avoided. In this manner, the local radio switching network base station on the called side determines the attribute of the caller by various means, and determines several levels of information disclosure levels.
[0097]
The following is an example in the case where two levels of information disclosure levels, inside and outside, and two types of index screens are prepared according to the levels.
[0098]
The second local wireless switching network 10 to which the caller wireless telephone 11 belongs is connected to the same in-house IP network as the first local wireless switching network 1, and the first local wireless switching network base station 2 When it is determined that the caller belongs to the company, the index screen file to be transmitted to the wireless telephone 11 is indexed in FIG. 3 which is set to be transmitted by default. Is switched to.
[0099]
In the first category “telephone transfer” 70 in the index screen of FIG. 4, the function of the index screen is the same as in FIG. 3, but each line is displayed by the personal name that was avoided as confidential in FIG. .
[0100]
In the next category “various processing” 71, an image of a camera terminal that cannot be disclosed outside the company can be distributed as “first floor lobby camera video” 72 to the inside of the company. For example, if a line from the first floor lobby camera image 72 is selected in order to confirm a customer image that came to the first floor lobby of a company building by a call from another sales section in the company, the first local radio As shown in FIG. 1, the switching network base station 2 transfers the call to the wireless network camera 6 in which the link of the wireless section is established as the extension communication terminal in the first local wireless switching network 1, and is the calling source. A data call is established with an external communication terminal.
[0101]
The wireless network camera 6 uses a file transfer protocol or the like to send a still image or the like taken in response to a request from the caller communication terminal to the requester via the first local wireless switching network base station 2. Deliver.
[0102]
Next, as a fourth embodiment, a description will be given of a case where the calling communication terminal does not have the browser function and the index screen file cannot be displayed. For example, in the procedure described in the second embodiment, when the wireless telephone 11 is a communication terminal that does not have a browser function, the wireless telephone 11 has a browser function in advance in the second local wireless switching network 10. It is assumed that the extension telephone number of another communication terminal is registered in association with the wireless telephone 11 as a linked communication terminal related to index screen transfer and data communication.
[0103]
In the sequence of FIG. 7 in which the wireless telephone 11 has a browser function, after the wireless telephone 11 receives the connection 205, the first local wireless switching network base station 2 and the wireless telephone to which the HTTP protocol is applied. 11, the relay function (not shown) possessed by the second local wireless switching network base station 9 is used for data between the IP network 7 and the wireless communication means in the second local wireless switching network 10. Relaying was performed toward the wireless telephone 11.
[0104]
However, as in the second embodiment, when the user 21 of the wireless telephone 11 makes a call to the communication terminal owned by the user 20, the wireless telephone 11 has registered the personal computer 13 as a cooperative communication terminal. if,
In the sequence of FIG. 7, the second local wireless switching network base station 9 establishes a connection with the first local wireless switching network base station 2 to which the HTTP protocol is applied after the wireless telephone 11 receives the connection 205. Therefore, the relay function (not shown) of the second local wireless switching network base station 9 directs data relay between the IP network 7 and the wireless communication means in the second local wireless switching network 10 to the personal computer 13. I was going.
[0105]
After application of the HTTP protocol, a file constituting the index screen is transferred from the second local wireless switching network base station 9 to the personal computer 13 in response to a transfer request from the personal computer 13, and the index is added to the browser function of the personal computer 13. A screen is displayed.
[0106]
The sequence after the user 21 selects a link destination from the index screen displayed on the browser of the personal computer 13 is the sequence after the sequence in which the first local radio exchange network base station 2 activates the extension number conversion 254 in FIG. The same is true until a call between 11 and the wireless telephone 3 is established. In other words, if the user 21 of the wireless telephone 11 does not have a browser function, a personal computer normally used as registered can be obtained by calling the representative telephone number of the first local wireless switching network 1. This means that 13 browsers display the index screen screen of the first local wireless switching network 1.
[0107]
In this way, using a browser of a personal computer is better than operating an index screen on a small screen of a wireless telephone or the like, and therefore, in a business where frequent calls are made, the wireless telephone 11 or a fixed cable is used. Even if a communication terminal such as the telephone 14 has a browser function corresponding to data communication, a personal computer may always be used as a cooperative communication terminal.
[0108]
In addition, the wireless telephone 11 does not need to register as a communication terminal in the second local wireless switching network 10, and the second local wireless switching network base station 9 communicates directly or indirectly. Any terminal that belongs to any network may be used as long as the terminal can be used.
[0109]
Up to now, in order to establish a connection between the local radio switching network base station on the called side and the communication terminal belonging to the local radio switching network on the calling side, which transfers the files constituting the index screen, The case where the local wireless switching network base station on the side relays data into the local wireless switching network has been described.
[0110]
However, since it is only necessary to establish a connection on the IP network and apply protocol means such as HTTP, a communication terminal not belonging to the local wireless switching network can communicate not only a telephone call but also data communication from a communication terminal in the local wireless switching network. It can also be used for access related to.
[0111]
In this case, contrary to the description so far, after the establishment of the telephone call, the first local radio exchange network base station 2 that is the base station of the call source is the radio telephone 11 or the cooperative communication terminal that is the call destination. In response to a request from the user, an index screen file relating to access selection describing a link destination to a communication terminal in the first local wireless switching network 1 is transmitted to a designated destination.
[0112]
In this example, it is assumed that the user 21 of the radio telephone 11 serving as the called party normally uses the personal computer 15.
[0113]
Since the personal computer 15 is directly connected to the IP network 7 and does not belong to any local wireless switching network, it is not necessary to comply with the circuit switching protocol on the network switching system. A connection via a normal LAN such as TCP / IP is established with the first local wireless switching network base station 2.
[0114]
Further, the first local wireless switching network base station 2 has a Web server function, and after a call call between the wireless telephone 3 and the wireless telephone 11 is established, the user 21 sends a first call to the browser of the personal computer 15. Index screen for selecting access to the first local wireless switching network base station 2 by HTTP protocol by inputting the URL to the Web server function of the local wireless switching network base station 2 or selecting the URL from the bookmark file Request a file.
[0115]
Upon receiving the request, the first local wireless switching network base station 2 transmits a set of index screen files relating to access selection to the personal computer 15 in accordance with the HTTP protocol or the like.
[0116]
The index screen file related to the access selection requested by the user 21 is immediately displayed by the browser function of the personal computer 15.
[0117]
When the user 21 selects a link destination for accessing a communication terminal in the first local wireless switching network 1 described on the index screen relating to access selection, the result is obtained from the personal computer 15 by the first local wireless switching network. The base station 2 is notified by means such as HTTP protocol.
[0118]
At this time, the first local radio exchange network base station 2 authenticates the link for each communication terminal registered in the index screen related to access selection or the request for the index screen itself related to access selection by entering a password or the like. May be performed.
[0119]
As described above, in the description from the first embodiment to the fourth embodiment, it is assumed that the index screen relating to the incoming call transfer destination selection is used to select the transfer destination of the call stored by the base station at the time of the incoming call. However, in this embodiment, by using it as an index screen related to access to freely access communication terminals in the local wireless switching network, a service that provides applications such as telephone calls and data communication with multiple connections is also realized. it can. In addition, this means that a communication terminal belonging to the local wireless switching network may request an index screen related to the access and access a communication terminal in the same local wireless switching network.
[0120]
【The invention's effect】
As described above, in a network switching system that is conventionally constructed in units of a local radio switching network, an operator using a communication terminal that preferentially receives calls from outside the local radio switching network responds, According to the present invention, the local radio switching network base station has an index screen described in Compact-HTML language, Java (registered trademark) language, and the like. By sending to, an automatic response is made, and selection of a call destination is entrusted to the caller user, and the result is automatically transferred in response to the result, so that the operator's work can be saved.
[0122]
Further, according to the present invention, the local wireless switching network on the called side determines the information disclosure level by various means such as an authentication protocol for determining the attributes of the local wireless switching network on the calling side and the communication terminal, and the information An index screen prepared according to the disclosure level is transmitted to the caller. As a result, a detailed index screen corresponding to a high level is disclosed to a caller having a high information disclosure level, and a simple index screen corresponding to a low level is disclosed to a caller having a low information disclosure level. Thus, there is an effect of preventing access to a communication terminal corresponding to confidentiality and leakage of information.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an entire network switching system according to the present invention.
FIG. 2 is a list in which a control server 8 compares a telephone number and an IP address on a network switching system.
FIG. 3 is an example of an index screen transmitted to a caller as a response to an incoming call from the outside by a local wireless switching network.
FIG. 4 is an example of an index screen transmitted to the caller as a response when the local wireless switching network receives an incoming call from the office.
FIG. 5 is a sequence chart showing a flow of conventional telephone call connection in a network switching system.
FIG. 6 is a sequence chart showing a call call connection flow to which the present invention is applied in a network switching system.
FIG. 7 is a sequence chart showing a flow in which a caller communication terminal selects a call transfer destination from an index screen and transfers a call to a target communication terminal in a callee local wireless switching network.
[Explanation of symbols]
1 First local wireless switching network
2 First local radio switched network base station
3-5, 11-12 Wireless telephone
6 Wireless network camera
7 IP network
8 Control server
9 Second local radio switched network base station
10 Second local wireless switching network
13 Personal computer
14 Wired landline telephones
20-22 users

Claims (1)

A first local wireless switching network having one or more first wireless communication terminals and a first base station that performs wireless communication with the first wireless communication terminals;
And at least a second local wireless switching network having one or more second wireless communication terminals and a second base station that performs wireless communication with the second wireless communication terminals,
A network switching system in which the first base station and the second base station are connected by a network, and a telephone call and / or data communication is performed between the first wireless communication terminal and the second wireless communication terminal In
The first base station includes storage means for storing a file constituting an index screen for designating a call destination for performing a call and / or data communication with the first wireless communication terminal, and the second base station. In response to an index file transfer request from the wireless communication terminal, the file constituting the index screen is transmitted to the second wireless communication terminal,
The second wireless communication terminal receives a file constituting the index screen via the second base station, displays the index screen ,
A network that establishes communication and / or data communication between the first wireless communication terminal selected using the index screen displayed on the second wireless communication terminal and the second wireless communication terminal An exchange system,
When the first base station transmits a file constituting the index screen, the first base station determines an information disclosure level by performing authentication with a second wireless communication terminal as a transmission destination, and displays the index screen. A network switching system comprising: selecting one file from a plurality of files prepared as constituent files according to the information disclosure level, and transmitting the selected file as a file constituting the index screen.

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