JP2006005504A - Ip telephone system, ip telephone call control server, emergency call originating method for use therein and its program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an IP telephone system in which an emergency call can be originated from an IP telephone terminal to a police station or a fire station while specifying an area without imposing an extra cost to the user of the IP telephone terminal. <P>SOLUTION: Upon receiving a call termination number from an IP telephone 5-1, 5-2 for emergency call, an IP telephone call control server 1 searches an installation area data base 2 using the subscriber number of source IP telephone 5-1, 5-2 for emergency call as a key. When the installation area of the source IP telephone 5-1, 5-2 for emergency call is specified by searching the installation area data base 2, the IP telephone call control server 1 controls the IP telephone system to originate a call to the number of emergency call reception center 4-1, 4-2 in an area A, B where the source IP telephone 5-1, 5-2 for emergency call is installed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an IP telephone system, an IP telephone call control server, an emergency call transmission method used therefor, and a program therefor, and more particularly, to an emergency call transmission method to a police station or a fire department in an IP (Internet Protocol) telephone service.

  In recent years, as a method for accessing the Internet, IP telephone services have also become widespread with the spread of broadband such as ADSL (Asymmetric Digital Subscriber Line) and FTTH (Fiber To The Home).

  Conventionally, in the IP telephone service, there is no area information of the source IP telephone, and it is possible to make a call from any area that can be connected via the IP network. As a result, the emergency call of the source is sent to the reception center in any area. I don't know if I should make an incoming call.

  Therefore, as an emergency call method (“110”, “119”, etc.) to the police or fire department in the IP phone service, a position measuring means [for example, GPS (Global Positioning System)] is provided on each IP phone. There has been proposed a method of mounting and adding position information measured by a position measuring means when an emergency call is made (see, for example, Patent Document 1).

JP 2003-198757 A

  IP telephones do not use a circuit switching system as in the conventional public telephone network, but perform communication by packet switching, so the area of the caller cannot be specified. In addition, since the IP phone subscriber number does not include area information, the area cannot be specified from the caller number. Therefore, an emergency call (“110”, “119”, etc.) from the IP telephone terminal to the police, the fire department or the like cannot be transmitted.

  Further, in the above-mentioned Patent Document 1, when an emergency call is transmitted from an IP telephone terminal to the police, the fire department or the like, the location information measured by the location measurement means is added, so that the area can be specified. However, an IP telephone terminal that is used in a fixed manner must be equipped with a position measuring means that is not normally used, which causes an extra cost to the user of the IP telephone terminal.

  Therefore, the object of the present invention is to solve the above-mentioned problems, specify an area, and send an emergency call from the IP telephone terminal to the police, fire department, etc. without burdening the IP telephone terminal user with extra costs. An IP telephone system, an IP telephone call control server, an emergency call transmission method used therefor, and a program therefor are provided.

An IP telephone system according to the present invention is an IP telephone system including a call control server that controls incoming and outgoing calls of an IP (Internet Protocol) telephone,
An installation area database that stores the subscriber number of the IP telephone and the area information where the IP telephone is installed in association with each other;
Means for retrieving area information of the IP telephone from the installation area database based on a subscriber number of the IP telephone when a preset specific number is received from the IP telephone, and corresponding to the retrieved area information; Means for making a call to the emergency call reception center specified by the specific number is provided in the call control server.

An IP telephone call control server according to the present invention is a call control server that controls incoming and outgoing calls of an IP (Internet Protocol) telephone,
Installation area that stores the IP telephone subscriber number and the area information in which the IP telephone is installed in association with each other based on the IP telephone subscriber number when a specific number set in advance is received from the IP telephone. Means for searching for the area information of the IP telephone from the database, and means for making a call to an emergency call reception center corresponding to the searched area information and specified by the specific number.

An emergency call transmission method according to the present invention is an emergency call transmission method used in an IP telephone system including a call control server that controls incoming and outgoing calls of an IP (Internet Protocol) telephone,
An installation area database for storing the IP telephone subscriber number and the area information where the IP telephone is installed in association with each other is provided in the IP telephone system;
A step of searching the call control server for area information of the IP telephone from the installed area database based on a subscriber number of the IP telephone when receiving a specific number preset from the IP telephone; And making a call to the emergency call reception center identified by the specific number.

  A program for an emergency call transmission method according to the present invention is a program for an emergency call transmission method used in an IP telephone system including a call control server for controlling incoming / outgoing calls of an IP (Internet Protocol) telephone set. When receiving a specific number set in advance, based on the subscriber number of the IP telephone, the IP telephone subscriber number and the area information where the IP telephone is installed are stored in association with the IP A process for searching for the area information of the telephone and a process for making a call to the emergency call reception center corresponding to the searched area information and specified by the specific number are executed.

  In other words, the IP (Internet Protocol) telephone system of the present invention enables outgoing calls (such as “110” and “119”) to the police, fire department, etc. in the IP telephone service, and the characteristics of the IP telephone. It is characterized by the fact that it is possible to provide services that are impossible with outgoing calls from a conventional public telephone network.

  More specifically, in the IP telephone system of the present invention, by managing the area information as the user information of the IP telephone subscriber in the call control server that performs call control of the IP telephone, for example, the IP in the area A The emergency call sent from the telephone is made to arrive at the emergency call reception center in the area A by the call control server, and the emergency call sent from the IP telephone in the area B is similarly received by the call control server in the area B emergency call. An incoming call is received at the reception center.

  As a result, in the IP telephone system of the present invention, it is possible to acquire the installation area based on the IP telephone number of the caller and receive the incoming call to an appropriate emergency call reception center, and to apply the characteristics of the IP telephone. Even in a situation where the caller cannot dictate necessary information, it is possible to promptly notify the emergency call reception center of accurate regional information.

  In other words, in the IP telephone system of the present invention, the IP telephone call control server has a user information database and can grasp the area information of the IP telephone of the caller. An incoming call can be made to the center, an emergency call can be made by an IP telephone, and a practical IP telephone service can be provided.

  In the IP telephone system of the present invention, information on the user of the IP telephone is registered in a database connected to the IP telephone call control server, and the information is transmitted to the emergency call reception center as necessary. Even when it is difficult to convey the name and address by voice when the caller is temporarily panicked, the information can be displayed on the emergency call reception center side.

  Specifically, (1) By registering information such as the floor number and floor plan of the emergency location for emergency calls of “119” (firefighting connection), the fire department can use this information optimally when reporting a fire. (2) By registering information such as the sender's family structure, age, health status, and pre-existing conditions, an ambulance can be dispatched with equipment that can provide first aid in the event of an emergency. Such an effect is obtained.

  The present invention is configured and operated as described below, so that an emergency call from the IP telephone terminal to the police, fire department, etc. can be specified without specifying an extra cost to the IP telephone terminal user. Can be transmitted.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an IP (Internet Protocol) telephone system according to an embodiment of the present invention. 1, an IP telephone system according to an embodiment of the present invention includes an IP telephone call control server 1, an installation area database (DB) 2, a VoIP (Voice over Internet Protocol) gateway 3, and an emergency installed in an area A. Call reception center 4-1 and emergency call IP phone 5-1, emergency call reception center 4-2 and emergency call IP phone 5-2 installed in region B, IP network 100, and public telephone network 200 It consists of and.

  The emergency call IP telephones 5-1 and 5-2 are IP telephones connected to Ethernet (registered trademark) and used to encode and store user information (address, etc.) in addition to operations related to normal calls. can do. Further, the emergency call IP telephones 5-1 and 5-2 can transmit the accumulated user information to the other party during a call by operating a specific button by the user.

  Further, the emergency call-compatible IP telephones 5-1 and 5-2 can transmit user information in the same manner as described above even when a user information transmission request signal is received from the other party during a call.

  Here, as user information, for example, “user name (including family members living together)”, “user age”, “address (including floor number of building)”, “health condition (care required, Information on diseases that are being treated on a continuous basis) ”.

  The IP telephone call control server 1 is a device that performs call control of the IP telephones 5-1 and 5-2. In addition to the basic call control function of the IP telephones 5-1 and 5-2, the IP telephones 5-1 and 5. -2 holds information on the area where the terminal is installed on the installation area database 2 for each subscriber number of -2. As a result, connection to an appropriate reception center for emergency calls processed by the conventional circuit switching method can be realized by routing on the IP network 100.

  The VoIP gateway 3 transmits / receives call control signals to / from the IP telephone call control server 1 and the emergency call compatible IP telephones 5-1, 5-2, and converts IP packetized voice data into analog voice signals. Or vice versa.

  Further, the VoIP gateway 3 has a function of modulating a voice signal based on user information transmitted and encoded from the emergency call compatible IP telephones 5-1 and 5-2 and carrying it through the public telephone network 200, and an emergency call. When a specific tone signal or pulse signal is detected from the reception center 4-1 or 4-2, it has a function of transmitting a user information transmission request signal to the other party's IP telephone set 5-1 or 5-2. ing.

  The emergency call reception centers 4-1 and 4-2 receive emergency calls (such as “110” and “119”) to the police and fire departments, and provide instructions to the jurisdiction. When a specific tone signal or pulse signal is detected during a call in addition to call acceptance, it is determined that user information has been received from the emergency call-compatible IP telephones 5-1 and 5-2, and subsequent audio signals Is decoded to obtain encoded user information, which is decoded and displayed on a display (not shown).

  Further, the emergency call reception centers 4-1 and 4-2 have a function of transmitting a tone or a pulse for requesting transmission of user information of a communication partner by an operator's operation.

  FIG. 2 is a block diagram showing the configuration of the IP telephone call control server 1 of FIG. In FIG. 2, the IP telephone call control server 1 includes a control means (CPU: central processing unit) 11, an outgoing / incoming means 12, an area search means 13, an external IF (interface) means 14, and a recording medium 15. Has been.

  The calling / receiving unit 12 transmits and receives voice and data to / from the emergency call corresponding IP telephones 5-1 and 5-2 via the IP network 100, and also transmits via the IP network 100, the VoIP gateway 3 and the public telephone network 200. Then, voice and data are transmitted / received to / from the emergency call reception centers 4-1 and 4-2.

  The external IF unit 14 transmits / receives data to / from the installation area database 2. The area search means 13 receives the incoming call number indicating the emergency call (such as “110” or “119”) from the emergency call compatible IP telephones 5-1 and 5-2 to the police or fire department. When the call is made, the installation area database 2 is searched using the subscriber number of the emergency call corresponding IP telephones 5-1 and 5-2 as a key, and the emergency call corresponding IP telephones 5-1 and 5-2 are installed. The numbers of the emergency call reception centers 4-1 and 4-2 in the area where the call is made are specified.

  The control means 11 controls each means in the IP telephone call control server 1 by executing a program stored in the recording medium 15 and performs call control for the emergency call corresponding IP telephones 5-1 and 5-2.

  In particular, the control means 11 specifies the numbers of the emergency call reception centers 4-1 and 4-2 in the area where the emergency call corresponding IP telephones 5-1 and 5-2 are installed by the area search means 13. Sometimes, the numbers of the emergency call reception centers 4-1 and 4-2 are transferred to the VoIP gateway 3 through the calling / receiving means 12, and the emergency call reception centers 4-1 and 4-2 are called.

  FIG. 3 is a flowchart showing the operation of the IP telephone call control server 1 of FIG. The operation of the IP telephone call control server 1 will be described with reference to FIGS. Note that the processing shown in FIG. 3 is realized by the control means 11 executing a program stored in the recording medium 15.

  When the IP telephone call control server 1 receives an incoming call number from the emergency call corresponding IP telephones 5-1 and 5-2 when performing emergency call calling processing (step S 1 in FIG. 3), the source emergency call compatible IP telephone 5 The installation area database 2 is searched using the subscriber numbers of -1,5-2 as a key (step S2 in FIG. 3).

  When the IP telephone call control server 1 specifies the installation area of the emergency call corresponding IP telephones 5-1 and 5-2 by searching the installation area database 2 (step S 3 in FIG. 3), the emergency call compatible IP telephone of the transmission source Control is performed to place a call to the numbers of emergency call reception centers 4-1 and 4-2 in areas A and B where 5-1 and 5-2 are installed (step S4 in FIG. 3).

  4 to 6 are sequence charts showing the operation of the IP telephone system according to one embodiment of the present invention. The operation of the IP telephone system according to an embodiment of the present invention will be described with reference to FIG. 1 and FIGS.

  First, the operation when an emergency call is transmitted from the emergency call IP telephone set 5-1 will be described with reference to FIG.

  When an emergency call is sent from the emergency call-compatible IP telephone 5-1 (a 1 in FIG. 4), a called number (“110”, “119”, etc.) is transmitted to the IP phone call control server 1. (A2 in FIG. 4).

  The IP telephone call control server 1 searches the installation area database 2 using the subscriber number of the caller emergency call correspondence IP telephone 5-1 as a key, and the area where the caller emergency call correspondence IP telephone 5-1 is installed. When a call is made to the number of the emergency call reception center 4-1 of A (a3 in FIG. 4), the VoIP gateway 3 calls the corresponding emergency call reception center 4-1 through the public telephone network 200 (in FIG. 4). a4).

  When the emergency call reception center 4-1 responds to the call (a5 in FIG. 4), the VoIP gateway 3 detects this through the public telephone network 200, and via the IP telephone call control server 1, the IP telephone corresponding to the emergency call When a response message is transmitted to 5-1 and the response message reaches the emergency call-compatible IP telephone 5-1, (a6 to a8 in FIG. 4), the emergency call-compatible IP telephone 5-1 and the emergency call reception center 4-1 Voice communication is possible between the two (a9, a10 in FIG. 4).

  When the emergency call IP phone 5-1 disconnects the call to the emergency call reception center 4-1 (a11 in FIG. 4), the emergency call reception center 4 via the IP telephone call control server 1 and the VoIP gateway 3 is used. -1 is disconnected (a12 to a14 in FIG. 4). Although not described, the operation when an emergency call is transmitted from the emergency call-compatible IP telephone 5-2 is the same as described above.

  Next, an operation for transmitting user information by an operation of the caller (emergency call correspondence IP telephone 5-1 side) from the state where the emergency call correspondence IP telephone 5-1 and the emergency call reception center 4-1 are in a call. Will be described with reference to FIG. Since this operation is the same between the emergency call compatible IP telephone 5-2 and the emergency call reception center 4-2, the description thereof is omitted.

  From the state where the emergency call correspondence IP telephone 5-1 and the emergency call reception center 4-1 are in a call (b1 and b2 in FIG. 5), the user information is obtained from the emergency call correspondence IP telephone 5-1 by a specific button operation. When transmitted (b3 and b4 in FIG. 5), the VoIP gateway 3 sends a tone or pulse indicating the start of transmission of user information to the emergency call reception center 4-1 through the public telephone network 200, and then encodes it. Then, a signal modulated by the user information is sent, and finally a tone or pulse signifying the end is sent (b5 in FIG. 5).

  The emergency call reception center 4-1 detects user information when receiving a signal from the VoIP gateway 3, and displays the detected user information on a display device (not shown) (b6 in FIG. 5). .

  After the reception of the user information is completed, the emergency call reception center 4-1 sends a tone or pulse indicating the completion of reception, and transmits a reception completion message to the emergency call corresponding IP telephone set 5-1 via the VoIP gateway 3. (B7, b8 in FIG. 5).

  Upon receipt of the reception completion message, the emergency call correspondence IP telephone 5-1 informs the user that the transmission of the user information is completed by sound or a lamp built in the terminal (b 9 in FIG. 5).

  Subsequently, from the state where the emergency call correspondence IP telephone 5-1 and the emergency call reception center 4-1 are in a call state, the user information is transmitted by the operation of the emergency call reception center 4-1. 1 will be described with reference to FIG. Since this operation is the same between the emergency call compatible IP telephone 5-2 and the emergency call reception center 4-2, the description thereof is omitted.

  Tone or pulse for requesting user information from the emergency call reception center 4-1 from the state where the emergency call IP phone 5-1 and the emergency call reception center 4-1 are in a call (c1 and c2 in FIG. 6). Is transmitted (c3 in FIG. 6), a user information transmission request message is transmitted to the emergency call-compatible IP telephone 5-1 via the VoIP gateway 3 (c4, c5 in FIG. 6).

  When the user information is transmitted from the emergency call corresponding IP telephone set 5-1 in response to the transmission request (c6 in FIG. 6), the VoIP gateway 3 transmits the user information to the emergency call reception center 4-1 through the public telephone network 200. A tone or pulse indicating the start of transmission is transmitted, subsequently a signal modulated by the encoded user information is transmitted, and finally a tone or pulse indicating the end is transmitted (c7 in FIG. 6).

  The emergency call reception center 4-1 detects user information when receiving a signal from the VoIP gateway 3, and displays the detected user information on the display device (c8 in FIG. 6).

  After the reception of the user information is completed, the emergency call reception center 4-1 sends a tone or pulse indicating the completion of reception, and transmits a reception completion message to the emergency call corresponding IP telephone set 5-1 via the VoIP gateway 3. (C9, c10 in FIG. 6).

  Upon receiving the reception completion message, the emergency call correspondence IP telephone 5-1 notifies the user that the transmission of the user information is completed by a sound or a lamp built in the own terminal (c 11 in FIG. 6).

  As described above, in this embodiment, since the IP telephone call control server 1 includes the user information database 2, it grasps the area information in which the emergency call corresponding IP telephones 5-1 and 5-2 are installed. The emergency call from the emergency call compatible IP telephones 5-1 and 5-2 can be received at the appropriate emergency call reception centers 4-1 and 4-2. Therefore, in this embodiment, it is possible to specify an area and make an emergency call from the IP phone to the police, the fire station, etc. without burdening the IP phone user with extra costs. Service can be provided.

  Also, in this embodiment, the information on the user of the IP telephone can be registered and the information can be transmitted to the emergency call reception centers 4-1 and 4-2 as necessary. Even when it is difficult to convey the name and address by voice in the case of a temporary panic, the information can be displayed on the emergency call reception centers 4-1 and 4-2.

  Specifically, for emergency calls of “119” (firefighting connection), (1) By registering information such as the floor number and floor plan of the place of transmission, the fire department can use this to make optimal equipment when reporting a fire. (2) Dispatch ambulance with equipment that can provide first-aid treatment in the event of an emergency by registering information on the sender's family structure, age, health status, past medical condition, etc. Is possible.

  FIG. 7 is a block diagram showing the configuration of an IP telephone system according to another embodiment of the present invention. In FIG. 7, the IP telephone system according to another embodiment of the present invention has the same configuration as that of the IP telephone system according to the embodiment of the present invention shown in FIG. Constituent elements are given the same reference numerals. The operation of the same component is the same as that of the embodiment of the present invention.

  In the user information database 6, user information transmitted when the emergency call corresponding IP telephones 5-1 and 5-2 are activated and registered in the IP telephone call control server 1 is registered. When the user information is updated on the emergency call corresponding IP telephones 5-1 and 5-2, the updated user information is immediately transmitted to the IP telephone call control server 1, and the user information database 6 is updated. The stored content of is updated.

  If the user information transmission request does not end normally from the emergency call reception centers 4-1 and 4-2, the same transmission request is output to the IP telephone call control server 1, so that the user information is transmitted again. It is possible to transmit a transmission request.

  FIG. 8 is a flowchart showing the operation of the IP telephone call control server 1 of FIG. The operation of the IP telephone call control server 1 will be described with reference to FIG. 7 and FIG. The configuration of the IP telephone call control server 1 is the same as that of the IP telephone call control server 1 according to the embodiment of the present invention shown in FIG. 2 except that the user information database 6 can be connected to the external IF means 14. is there. Further, the processing shown in FIG. 8 is realized by the control means 11 executing a program stored in the recording medium 15.

  When the IP telephone call control server 1 receives an incoming call number from the emergency call corresponding IP telephones 5-1 and 5-2 when performing emergency call calling processing (step S 11 in FIG. 8), the source emergency call compatible IP telephone 5 The installation area database 2 is searched using the subscriber numbers of -1,5-2 as a key (step S12 in FIG. 8).

  When the IP telephone call control server 1 specifies the installation area of the caller emergency call compatible IP telephones 5-1 and 5-2 by searching the installation area database 2 (step S 13 in FIG. 8), the caller emergency call compatible IP telephone set If communication with 5-1 and 5-2 is not cut off (step S14 in FIG. 8), emergency calls in areas A and B in which the emergency call corresponding IP telephones 5-1 and 5-2 are installed Control is performed to place a call to the numbers of the reception centers 4-1 and 4-2 (step S15 in FIG. 8).

  On the other hand, if the IP telephone call control server 1 is disconnected from the caller emergency call compatible IP telephones 5-1 and 5-2 (step S14 in FIG. 8), the caller emergency call compatible IP telephone 5- The user information database 6 is searched using the subscriber number of 1,5-2 as a key (step S16 in FIG. 8), and the area A in which the emergency call corresponding IP telephones 5-1 and 5-2 are installed. A call is made to the numbers of the emergency call reception centers 4-1 and 4-2 of B, and the user information retrieved from the user information database 6 is reported (step S17 in FIG. 8).

  Thus, in this embodiment, since the user information is also stored in the user information database 6, even when communication with the emergency call corresponding IP telephones 5-1 and 5-2 is interrupted, The user information of the emergency call compatible IP telephones 5-1 and 5-2 can be obtained at the emergency call reception centers 4-1 and 4-2.

It is a block diagram which shows the structure of the IP telephone system by one Example of this invention. It is a block diagram which shows the structure of the IP telephone call control server of FIG. It is a flowchart which shows operation | movement of the IP telephone call control server of FIG. It is a sequence chart which shows operation | movement of the IP telephone system by one Example of this invention. It is a sequence chart which shows operation | movement of the IP telephone system by one Example of this invention. It is a sequence chart which shows operation | movement of the IP telephone system by one Example of this invention. It is a block diagram which shows the structure of the IP telephone system by the other Example of this invention. It is a flowchart which shows operation | movement of the IP telephone call control server of FIG.

Explanation of symbols

1 IP telephone call control server
2 Installation position database
3 VoIP gateway 4-1 and 4-2 Emergency call reception center 5-1 and 5-2 IP phone for emergency call
6 User information database
11 Control means
12 Calling and calling means
13 Area search means
14 External IF means
15 Recording media
100 IP network
200 Public telephone network
A, B area

Claims (16)

An IP telephone system including a call control server for controlling incoming and outgoing calls of an IP (Internet Protocol) telephone,
An installation area database for storing the IP telephone subscriber number and area information where the IP telephone is installed in association with each other;
Means for retrieving area information of the IP telephone from the installation area database based on a subscriber number of the IP telephone when a preset specific number is received from the IP telephone, and corresponding to the retrieved area information; An IP telephone system comprising: the call control server having means for making a call to an emergency call reception center specified by the specific number.   2. The IP telephone system according to claim 1, wherein the specific number includes at least a telephone number for an emergency call to the police and the fire department. A user information database for storing user information of the IP telephone in association with a subscriber number of the IP telephone;
The call control server sends the user information retrieved from the user information database based on the subscriber number of the IP telephone to the emergency call reception center when communication with the IP telephone that has transmitted the specific number is disconnected. 3. The IP telephone system according to claim 1 or 2, wherein the transmission is performed.   4. The IP telephone system according to claim 3, wherein the user information includes at least a user's name and address.   5. The IP telephone system according to claim 4, wherein the user information further includes at least a user's age and health status. A call control server for controlling incoming and outgoing calls of an IP (Internet Protocol) telephone,
Installation area that stores the IP telephone subscriber number and the area information in which the IP telephone is installed in association with each other based on the IP telephone subscriber number when a specific number set in advance is received from the IP telephone. Calling means comprising means for retrieving area information of the IP telephone from the database, and means for making a call to an emergency call reception center corresponding to the retrieved area information and identified by the specific number Control server.   The call control server according to claim 6, wherein the specific number includes at least a telephone number for an emergency call to the police and the fire department.   User information that stores user information of the IP telephone in association with the subscriber number of the IP telephone based on the subscriber number of the IP telephone when communication with the IP telephone that has transmitted the specific number is disconnected 8. The call control server according to claim 6, wherein user information retrieved from a database is transmitted to the emergency call reception center.   9. The call control server according to claim 8, wherein the user information includes at least a user's name and address.   The call control server according to claim 9, wherein the user information further includes at least a user's age and health status. An emergency call transmission method used in an IP telephone system including a call control server for controlling incoming and outgoing calls of an IP (Internet Protocol) telephone,
An installation area database for storing the IP telephone subscriber number and the area information where the IP telephone is installed in association with each other is provided in the IP telephone system;
A step of searching the call control server for area information of the IP telephone from the installed area database based on a subscriber number of the IP telephone when receiving a specific number preset from the IP telephone; An emergency call transmission method comprising the steps of: making a call to an emergency call reception center identified by the specific number and corresponding to the regional information.   12. The emergency call transmission method according to claim 11, wherein the specific number includes at least a telephone number for an emergency call to the police and the fire department.   Corresponding to the IP telephone user information based on the IP telephone subscriber number when communication with the IP telephone that originated the specific number is cut off to the call control server side The emergency call transmission method according to claim 11 or 12, further comprising the step of transmitting user information retrieved from a user information database to be added and stored to the emergency call reception center.   The emergency call transmission method according to claim 13, wherein the user information includes at least a name and an address of the user.   The emergency call transmission method according to claim 14, wherein the user information further includes at least a user's age and health status. A program for an emergency call transmission method used in an IP telephone system including a call control server for controlling incoming / outgoing calls of an IP (Internet Protocol) telephone, wherein the computer receives the specific number set in advance from the IP telephone A process of searching for the area information of the IP telephone from an installed area database that stores the IP telephone subscriber number and the area information where the IP telephone is installed in association with each other based on the IP telephone subscriber number; A program for executing processing for making a call to an emergency call reception center corresponding to the searched area information and specified by the specific number.

Images