JP2008245097A - Extension telephone system and extension number retrieval method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extension telephone system in which an extension number can be retrieved by a mobile phone including an extension telephone function by a wireless LAN, and an extension number retrieval method using the extension telephone system. <P>SOLUTION: On the same Intranet as a VoIP server 13 to which a mobile phone 11 is connected via the wireless LAN, a front end (extension retrieval server 15) is installed which retrieves an extension telephone database 14 upon receipt of a retrieval request from the mobile phone 11 and notifies the mobile phone 11 of an extension number. Furthermore, the mobile phone 11 comprises a means which stores the host name (IP address) of the extension retrieval server 15, carries out the retrieval request while being connected to the extension retrieval server 15 via the wireless LAN, when a user requests telephone directory retrieval and the mobile phone 11 is located within the premises and is connected to the VoIP server 13, and receives the extension number. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an extension number system and an extension number search method, and more particularly to an extension telephone system including a mobile phone having a wireless LAN extension telephone function and an extension number search method in the extension telephone system.

  In recent years, mobile terminals such as mobile phones have been used as work tools, and various techniques for connecting a mobile phone having an extension telephone function via a wireless LAN to an internal extension telephone system have been disclosed ( For example, see Patent Document 1 below). In this system, even when an extension is used, it is possible to make a call to select a location on the premises, so that convenience for the user can be improved.

JP 2004-186747 A

  Here, when calling an extension with a mobile phone having a wireless LAN extension telephone function, since the extension telephone number is not registered in the telephone directory of the mobile phone, a user connected to the intranet is connected to the user of the extension telephone system. In many cases, a means for searching an extension telephone database is provided via a computer terminal such as a computer.

  However, even on campus, depending on the location, there is no computer terminal for searching, or the computer terminal is not connected to the intranet, so the user cannot check the extension number and cannot make a call. There was a problem.

  The present invention has been made in view of the above problems, and its main object is to use an extension telephone system capable of searching for an extension number with a mobile phone having an extension telephone function using a wireless LAN, and the extension telephone system. It is to provide an extension number search method.

  In order to achieve the above object, the present invention provides a local system including a VoIP (Voice over Internet Protocol) server, an extension number database, and a wireless LAN access point on an intranet, and is connected to the local system via the wireless LAN access point. An extension telephone system comprising at least a mobile phone having a wireless LAN communication function, a number search unit for searching the extension number database in the local system according to a number search request from the mobile phone, and the number search An extension search server including a number notification unit that processes the number searched by the unit into a number that can be transmitted by extension and notifies the mobile phone of the number.

  In the present invention, the mobile phone has a function of transmitting a number search request based on a search key specified by a telephone directory search function provided in advance to the extension search server, and the number search unit includes the number search The extension number database may be searched using the search key of the request.

  Moreover, in this invention, the said number search part can be set as the structure which performs a search only when the said mobile telephone is connected to the said VoIP server.

  In addition, the present invention can be connected to an intranet including a VoIP (Voice over Internet Protocol) server, an extension number database, an extension search server, and a wireless LAN access point, and the local system via the wireless LAN access point. An extension number search method in an extension telephone system including at least a mobile phone having a wireless LAN communication function, using a phonebook search function provided in advance in the mobile phone, from a phonebook stored in advance A first step of searching for a number; a second step of transmitting a number search request from the mobile phone to the extension search server when the number does not exist in the telephone directory; and A number search request is received, and the extension number database is searched according to the number search request. And a fourth step of processing the number searched by the extension search server into a number that can be transmitted by extension and notifying the mobile phone.

  In the present invention, in the second step, a number search request based on a search key designated by the telephone directory search function is transmitted, and in the third step, the search key of the number search request is used. Thus, the extension number database can be searched.

  In the present invention, the third step may be configured to execute a search only when the mobile phone is connected to the VoIP server.

  Thus, the present invention provides an extension search server in an extension telephone system including a mobile phone having an extension telephone function by wireless LAN, and the extension search server searches an extension number database in response to a request from the mobile phone, Since control for notifying the mobile phone of the retrieved number is performed, the user can make an extension call in the same manner as normal use of the mobile phone.

  The extension telephone system and extension number search method of the present invention have the following effects.

  The first effect of the present invention is that an extension number can be searched in the same procedure as a normal phone book search using a mobile phone having an extension function by wireless LAN. The reason is that the extension number database and the telephone directory function of the mobile phone having the extension telephone function by the wireless LAN are linked through the wireless LAN. This makes it possible to search for an extension number without a separate device such as a computer terminal connected to the intranet, thereby improving user convenience.

  The second effect of the present invention is that the extension number can be easily searched. The reason is that the user does not need to learn a new method for the search because the extension search is performed seamlessly in the same procedure as the phone book search in the mobile phone body.

  The third effect of the present invention is that an extension telephone system capable of searching for the extension number can be easily introduced. The reason for this is that the extension number search is executed only when connected to the wireless LAN on the premises, so that it is only necessary to add an extension search server to the extension telephone system.

  As shown in the prior art, when an extension call is made using a mobile phone having a wireless LAN extension telephone function, an extension number is searched through a computer terminal connected to an intranet. When there is no computer terminal for search or when the computer terminal is not connected to the intranet, there is a problem that the extension number cannot be checked.

  Here, since the cellular phone having the extension telephone function by wireless LAN is connected to the intranet via the wireless LAN on the premises, if a means for accessing the extension number search service is provided, the same service as the computer terminal is provided. Can receive. Therefore, in the present invention, the telephone directory function of the mobile phone is linked with the internal extension number database, and if the user can access the wireless LAN, the extension number not recorded in the telephone directory of the mobile phone main body is searched. To be able to.

  Specifically, in FIG. 1, a search request from the mobile phone 11 is received on the same intranet as the VoIP server 13 to which the mobile phone 11 is connected via a wireless LAN, the extension telephone database 14 is searched, and the mobile phone 11 is installed with a front end (extension search server 15) for notifying the extension number.

  The mobile phone 11 stores the host name (IP address) of the extension search server 15, and when the user requests a phone book search, the mobile phone 11 is on the premises and connected to the VoIP server 13. If there is, a means for receiving the extension number by connecting to the extension search server 15 via the wireless LAN and executing the search request is provided.

  This makes it possible to search for an extension number in the same procedure as a normal telephone directory search using a mobile phone having an extension function by wireless LAN.

  In order to describe the above-described embodiment of the present invention in more detail, an extension telephone system and an extension number search method according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram schematically showing a configuration of an extension telephone system including a mobile phone having an extension telephone function via a wireless LAN according to the present embodiment. FIG. 2 is a block diagram showing the configuration of the extension search server, and FIG. 3 is a block diagram showing the configuration of the mobile phone. FIG. 4 is a flowchart showing an extension number search procedure in the extension telephone system of this embodiment, and FIG. 5 is a flowchart showing details of a search request to the extension search server.

  As shown in FIG. 1, an extension telephone system 10 of this embodiment includes a mobile phone 11 having an extension telephone function via a wireless LAN (Local Area Network) and a local system. A wireless LAN access point 12 that communicates with the Internet, a VoIP (Voice over Internet Protocol) server 13 that implements a function that enables voice communication over a communication network by converting voice into IP (Internet Protocol) packets, and An extension number database 14 that provides an extension number search via a computer terminal (not shown) connected via an intranet, an extension search server 15 that is a characteristic part of the present embodiment, and the like.

  As shown in FIG. 3, the mobile phone 11 includes an antenna 31a and a communication unit 32a that communicate with a wireless base station, and a wireless LAN antenna 31b that communicates with the wireless LAN access point 12 based on a standard such as Bluetooth. A wireless LAN communication unit 32b, a control unit 33, a key operation unit 34 including direction keys, numeric keys, and special keys, and a display unit 35 including a liquid crystal display device, an organic EL (Electroluminescence) display device, and the like. A memory 36 such as a RAM (Random Access Memory) in which a host name (IP address) of the telephone directory and extension search server 15 is stored, a voice codec unit 37, a speaker 38, a microphone 39, and the like. When functioning as an extension telephone, it is connected to the VoIP server 13 via the wireless LAN access point 12. In addition, when the search for the extension number is requested, the control unit 33 requests the extension search server 15 to search for the extension number. This control may be executed as a control program that causes a computer to function as the means for performing the control.

  Further, as shown in FIG. 2, the extension search server 15 receives a search request from the mobile phone 11 and searches for the extension number in the extension number database 14 when the mobile phone 11 is connected to the VoIP server 13. The number search unit 22 to be executed, the number notification unit 23 that processes the extension number searched by the number search unit 22 into a number that can be transmitted by extension and notifies the mobile phone 11, and communicates with the extension number database 14 and the mobile phone 11 The communication part 24 for this, and the control part 21 etc. which control these are comprised. The number search unit 22 and the number notification unit 23 may be configured as hardware, or may be configured as a control program that causes the computer to function as the number search unit 22 and the number notification unit 23. It should be noted that the extension search server 15 and the extension number database 14 may be physically different devices or the same device.

  Next, an extension number search procedure using the extension telephone system 10 of this embodiment will be described with reference to the flowchart of FIG.

  First, when searching for an extension number, the user of the mobile phone 11 requests a number search using the phone book function of the mobile phone 11 as usual (step S11).

  Next, the control unit 33 of the mobile phone 11 searches the phone book recorded in the memory 36 in advance (step S12), and if the search target number exists in the phone book ("Y" in step S13). In the case), the control unit 33 displays the result on the display unit 35 in step S14.

  On the other hand, when the search target number is not found in the telephone directory (in the case of “N” in step S13), the control unit 33 of the mobile phone 11 uses the wireless LAN antenna 31b and the wireless LAN communication unit 32b to establish a wireless LAN. It is checked whether or not it is connected to the VoIP server 13 via the access point 12 (step S15).

  If the mobile phone 11 is not connected to the VoIP server 13 (in the case of “N” in step S15), it is assumed that the mobile phone 11 does not exist on the premises and cannot be connected to the extension search server 15 via the wireless LAN. The unit 33 displays no corresponding on the display unit 35 (step S19) and ends the process. As a result, the extension search is not executed when the mobile phone functions outside the premises.

  On the other hand, when connected to the VoIP server (in the case of “Y” in step S15), the control unit 33 of the mobile phone 11 registers and stores the host name (IP address) of the extension search server 15 in the memory 36. It is checked whether it is present (step S16).

  When the address of the extension search server 15 is not registered (in the case of “N” in step S16), the control unit 33 displays “not applicable” on the display unit 35 (step S19) and ends the process.

  On the other hand, when the address of the extension search server 15 is registered (in the case of “Y” in step S16), the control unit 33 executes a search request to the extension search server 15 in step S17. Details of this search request will be described later.

  Then, the control unit 33 waits for the number notification from the extension search server 15, and when the number is not notified from the extension search server 15 (in the case of “N” in step S18), the control unit 33 displays the number on the display unit 35. If the number is notified from the extension search server 15 (No in step S18), the control unit 33 receives the number received from the extension search server 15. Is displayed on the display unit 35 (step S14).

  Next, details of the search request (step S17) to the extension search server 15 will be described with reference to FIG.

  The control unit 33 of the mobile phone 11 uses the wireless LAN antenna 31b and the wireless LAN communication unit 32b to access a host name (IP address) registered and stored in the memory 36 in advance via the wireless LAN access point 12. Then, a connection request is made to the extension search server 15 via the wireless LAN (step S21).

  The extension search server 15 waits for a connection request from the mobile phone 11 (step S25), and when the connection is established, the control unit 33 of the mobile phone 11 transmits the search request to the extension search server 15 (step S22). The extension search server 15 receives this (step S26), and the number search unit 22 executes a search process on the extension number database 14 (step S27).

  Specifically, the control unit 33 of the mobile phone 11 transmits a search request based on the search key specified by the user in the phone book search to the extension search server 15, and the number search unit 22 of the extension search server 15 The extension number database 14 is searched based on the searched key. This search key is a key for searching by name, reading, group (department name), etc. realized by the telephone directory search function of the mobile phone 11.

  The number notifying unit 23 of the extension search server 15 receives the search result from the extension number database 14, and processes the search result for a mobile phone (that is, a number that can be used for extension transmission as it is) (step S28). It should be noted that the target database may be an in-house telephone number book, and it is assumed that the search result includes an external line number inside and outside the premises. In this case, the user who has received the result gives the external transmission number from the local system to the external number of the search result so that the user can make a call from the extension as it is.

  The number notification unit 23 of the extension search server 15 transmits the processed result to the mobile phone 11 (step S29), and the control unit 33 of the mobile phone 11 receives the search result from the extension search server 15 (step S23). The connection with the extension search server 15 is disconnected (step S24). At this time, the extension search server 15 waits for the next connection request from the mobile phone 11 and enters a standby state (step S25).

  Thus, the extension search server 15 is provided in the extension telephone system 10 including the mobile phone 11 having the extension telephone function by wireless LAN, and the number search unit 22 of the extension search server 15 responds to the search request from the mobile telephone 11. The extension number database 14 is searched, and the number notification unit 23 processes the searched number for the mobile phone 11 and then performs control to notify the mobile phone 11, thereby making it possible to search for the extension number. The user can make an extension call as it is, as in the case where the mobile phone 11 is normally used.

  Note that the mobile phone 11 generally performs control to specify and display the name of the caller by subtracting the phone book of the mobile phone 11 from the incoming call number when an incoming call is received. Therefore, if the mobile phone 11 is used as an extension (connected to the VoIP server 13) and the incoming call number is not found in the main phone book, the caller is identified from the extension telephone database 14 by the above method. Then, the mobile phone 11 may have a function of displaying an incoming call on the display unit 35.

  Moreover, although the case where an extension number is searched using the mobile phone 11 is shown in the above embodiment, the present invention is not limited to the above embodiment, and any mobile terminal having a wireless LAN function can be used. The same can be applied to the case of searching for a number managed by a local system.

  The present invention is applicable to an extension telephone system including a mobile phone having a wireless LAN extension telephone function and an extension number search method.

It is a figure which shows typically the structure of the extension telephone system which concerns on one Example of this invention. It is a block diagram which shows the structure of the extension search server of the extension telephone system which concerns on one Example of this invention. It is a block diagram which shows the structure of the mobile telephone of the extension telephone system which concerns on one Example of this invention. It is a flowchart figure which shows the search procedure of the extension number in the extension telephone system which concerns on one Example of this invention. It is a flowchart which shows the detail of the search request with respect to the extension search server which concerns on one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Extension telephone system 11 Mobile telephone 12 Wireless LAN access point 13 VoIP server 14 Extension number database 15 Extension search server 21 Control part 22 Number search part 23 Number notification part 24 Communication part 31a Antenna 31b Wireless LAN antenna 32a Communication part 32b Wireless LAN communication Unit 33 Control unit 34 Key operation unit 35 Display unit 36 Memory 37 Audio codec unit 38 Speaker 39 Microphone

Claims (6)

A private system including a VoIP (Voice over Internet Protocol) server, an extension number database, and a wireless LAN access point on an intranet, and a mobile phone having a wireless LAN communication function connectable to the private system via the wireless LAN access point In an extension telephone system comprising at least
In the campus system,
In accordance with a number search request from the mobile phone, a number search unit that searches the extension number database;
An extension telephone system comprising: an extension search server including a number notification unit that processes the number searched by the number search unit into a number that can be transmitted by extension and notifies the mobile phone. The mobile phone has a function of transmitting a number search request based on a search key designated by a telephone directory search function provided in advance to the extension search server,
2. The extension telephone system according to claim 1, wherein the number search unit searches the extension number database using the search key of the number search request.   3. The extension telephone system according to claim 1, wherein the number search unit executes a search only when the mobile phone is connected to the VoIP server. 4. A local system including a VoIP (Voice over Internet Protocol) server, an extension number database, an extension search server, and a wireless LAN access point on an intranet, and a wireless LAN communication function connectable to the local system via the wireless LAN access point An extension number search method in an extension telephone system comprising at least a mobile phone comprising:
A first step of searching for a number from a telephone book stored in advance using a telephone directory search function provided in advance in the mobile phone;
A second step of transmitting a number search request from the mobile phone to the extension search server when the number does not exist in the phone book;
A third step of receiving the number search request at the extension search server and searching the extension number database according to the number search request;
And a fourth step of processing the number searched by the extension search server into a number that can be transmitted by extension and notifying the mobile phone. In the second step, a number search request based on a search key designated by the telephone directory search function is transmitted,
5. The extension number search method according to claim 4, wherein, in the third step, the extension number database is searched using the search key of the number search request.   The extension number search method according to claim 4 or 5, wherein the third step executes a search only when the mobile phone is connected to the VoIP server.

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