JP3249761B2 - Terminal identification number assigning method and server device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a LAN (Local Are)
a) a method of identifying a connection partner terminal during real-time data communication within a network, a method of automatically registering a terminal, and a terminal identification number assigning method including a device for realizing the method; and a server device. It is about.

[0002]

2. Description of the Related Art L using Ethernet (registered trademark) or the like.
Since the AN is a network that performs communication using packet data, it was originally not suitable for real-time data communication such as voice. However, in recent years, L
An application of the type called an Internet telephone for exchanging voice data packets in an AN in real time has begun to appear.

[0003] When constructing a LAN by Ethernet or the like, it is common to construct a network by the TCP / IP protocol. At this time, the terminal connected to the network is usually identified using a terminal identifier called an IP address.

[0004] When an IP address is represented by a decimal number,
xxx. xxx. xxx. xxx is represented by four 3-digit numbers (xxx is 0 to 255) separated by “.”. Note that, when the head of the three-digit number xxx is “0”, the “0” may be omitted.

FIG. 1 shows an example in which an IP address is given. For example, for the terminal A, the IP address “129.6
0.10.10 ". In order to specify a connection partner in the above-mentioned Internet telephone, it is a general method to directly specify the IP address of the partner terminal or the e-mail address of the partner at the time of calling. FIG. 2 shows an example of an e-mail address.

[0006]

However, when an IP address is used for designation of a connection destination, it is necessary for a general user to memorize and input a maximum of 12 digits of an IP address which is not familiar to general users. However, there is a problem that it is difficult to use as a man-machine interface.

[0007] The IP address is a number that is important in the system and is a number that one does not want to disclose to the outside of the network. There was a problem that it was necessary to make it public.

[0008] Further, when the connection destination is designated by an e-mail address, it is usually necessary to input a fairly long alphabetic address, and a keyboard is required for inputting, so that the terminal is limited to a personal computer. It cannot be input from a simple device such as a telephone or FAX,
There was a problem.

In order to solve this, a unique terminal identification number (LAN telephone number) different from the IP address is given to a terminal in the LAN, and the LAN telephone number server in the LAN is provided with the LAN telephone number. It is considered effective to have a function of associating IP addresses with IP addresses.

FIG. 3 shows a configuration example of a system including a LAN telephone number server. Reference numeral 5 in the figure is a client terminal,
Reference numeral 6 denotes a LAN telephone number server, and reference numeral 7 denotes subordinate client terminal management number information (terminal management table). By using the LAN telephone number, the user need only memorize numbers (LAN telephone numbers) that are easy to remember as telephone numbers, and it is not necessary to remember the IP address, and the usability of the Internet telephone is improved. Also, since the input is only numbers, terminals for general telephone networks, such as telephones and faxes, can also be taken into the Internet telephone system, and have an IF for connecting terminals for analog telephone networks, such as telephones / faxes. A terminal connection device (TA) having a function of converting a signal of an analog terminal into a packet signal for data communication and transmitting the signal to a network can be used as a client terminal of an Internet telephone.

FIG. 4 shows an example of a configuration in which a terminal connection device (TA) is used. In the figure, reference numeral 1 denotes a LAN / Internet, 2 denotes a terminal connection device, 3 denotes an analog telephone, 4 denotes an analog fax, and 5 denotes a general-purpose personal computer having Internet telephone software.

However, the registration of this LAN telephone number involves:
It is necessary for the system administrator to manually perform registration work on the LAN telephone number server.
There was a problem in maintainability, such as the need to change the settings on the LAN telephone number server side every time the address was changed.

Further, in order to cope with the shortage of IP addresses in recent years, a dynamic IP address in which a terminal requests an IP address from a server at the time of system startup and sets its own IP address to an IP address given by the server. There are also more systems that support. Here, the dynamic IP
A method for obtaining an address will be described.

FIG. 5 shows a mechanism for acquiring a dynamic IP address, and FIG. 6 shows an example of a dynamic IP address acquisition sequence. It is assumed that the network is as shown in FIG. Here, the dynamic IP address client terminal sends an IP address to the IP address assignment server when the power is turned on.
An address is requested, but at this point the dynamic IP address client terminal has not been set with an IP address.
Therefore, this IP address request packet is transmitted by broadcast. Because it is a broadcast transmission,
This packet is transmitted to all terminals (including servers) in the LAN without setting the IP address of the dynamic IP address client terminal that is the transmission source.

In the LAN, as shown in FIG.
There are cases where there is an address assigning server, but when each IP address assigning server receives an IP address request packet from a dynamic IP address client terminal, the server assigns an unused IP address among the IP addresses held by its own server. The IP address is temporarily held and transmitted as a temporary IP address to the LAN by broadcasting. Since the packet of the temporary IP address is also broadcast-transmitted, the packet reaches the dynamic IP address client terminal to which the IP address has not been set yet. However, the packet of the temporary IP address is transmitted to all the IPs in the LAN.
Since the address assignment server transmits, the requesting client terminal receives a plurality of temporary IP addresses. Therefore, the client terminal receives the temporary I
A P-address is adopted, and a notification packet is sent to the IP address assignment server of the transmission source. Ignore temporary IP addresses from other servers. The server that has received the setting notification from the client terminal registers the temporarily held IP address as officially in use. Further, the server in which the temporary IP address has not been adopted waits for a setting notification for a certain period of time, and if this does not come, it is determined that the temporary IP address has not been adopted, and the temporarily held IP address is released. Process in a state where it can be used next time.

The client terminal corresponding to the dynamic IP address has a different IP address every time. However, when the LAN telephone number server manages the LAN telephone number and the IP address in a fixed manner,
Since there is a possibility that a different IP address is registered in a certain LAN telephone number, there is a problem that the same user cannot fixedly use the same LAN telephone number.

According to the present invention, in order to solve the above problems, a terminal in a network automatically registers an IP address with a LAN telephone number server at the time of startup and automatically registers at the time of system termination. The purpose is to allow erasure. It is another object of the present invention to enable the same LAN telephone number to be always assigned to the user even if the client terminal is compatible with a dynamic IP address. .

[0018]

According to the present invention, a "numeric identifier (terminal identification number)" such as a telephone number different from an IP address is provided for a terminal (client terminal) in a network. LA for managing
It is assumed that N telephone number servers are in the network.
Since it is considered that there are a plurality of LAN telephone number servers in the network, a "numeric identifier (server management number)" for identifying the LAN telephone number server itself is provided. FIG. 3 shows this state. Here, “server management number + terminal management number” is a LAN telephone number.

The LAN telephone number server 6 has means for describing the terminal management number and the IP address of the terminal corresponding to the terminal management number, and has means for returning the IP address of the corresponding terminal in response to an inquiry by the terminal management number. As means for describing the terminal management number and the IP address of the terminal corresponding thereto, a terminal management table as shown in FIG. 7 can be considered.

The LAN telephone number server 6 stores a server management number and an IP address of the corresponding LAN telephone number server.
It has the means to describe and address, for I <br/> Ru inquiry to the server management number, the appropriate LAN telephone number server IP
Has a means to return the address . As means for describing the server management number and the IP address of the server terminal corresponding to the server management number, a server management table as shown in FIG. 8 can be considered.

The LAN telephone number server 6 receives the registration request from the client terminal 5 to the terminal management table 7, and registers the IP address of the client terminal 5 in the terminal management table 7 after receiving the registration request. Means for notifying the client terminal of a terminal management number associated with the registered IP address after registering the terminal management table, and means for receiving a registration deletion request from the terminal management table 7 from the client terminal 5 Means for deleting the IP address of the client terminal 5 from the terminal management table 7 after receiving the deregistration request, means for notifying the client terminal 5 of deregistration after the deregistration, and that the terminal management number is fixed Of the MAC address and the terminal management number in the reservation number management table or the terminal management table It can be made to have an ID management table for managing the means or the user ID number indicating the response.

As the LAN telephone number server, a general personal computer or a workstation having a network IF can be used. The client terminal 5 on the side of making an Internet call includes a means for inputting a LAN telephone number and a default LAN for first inquiring when making a call.
Means for storing the IP address of the telephone number server 6 and inquiring of the default LAN telephone number server 6 for the IP address of the partner terminal using the input LAN telephone number before calling the partner terminal at the time of calling. Means, means for receiving the notification of the IP address of the partner terminal from the LAN telephone number server 6, and means for making a call to the partner terminal of the IP address notified from the LAN telephone number server 6. Can be.

The client terminal 5 transmits a terminal management table registration request to the LAN telephone number server 6 when the system is started, and receives a terminal management number after the terminal management table is registered from the LAN telephone number server 6. Means for sending a terminal management table registration deletion request to the LAN telephone number server 6 upon termination of the system; means for receiving a notification after terminal management table registration deletion from the LAN telephone number server 6; May be provided with a flag indicating whether the is fixed or non-fixed, a MAC address or a user ID number.

In the present invention, a client terminal for making an Internet call has a network IF,
A personal computer in which Internet telephone software is installed, or a terminal connection device (TA) for connecting a general analog telephone, a facsimile or the like to a network can be considered.

The client terminal transmits a LAN telephone number registration request to the LAN telephone number server when the power is turned on or when the system is started. If the client terminal supports the dynamic IP address, the client terminal acquires the IP address from the IP address assignment server and then transmits a LAN telephone number registration request packet.

FIG. 9 shows a LAN telephone number registration sequence. An IP address is obtained when the system is started. FIG. 10 shows an example of a LAN telephone number registration request packet.

The LAN telephone number server that has received the LAN telephone number registration request packet checks whether the IP address of the registration request source has already been registered in the terminal management table. Register for. At this time, it is assumed that a fixed LAN telephone number is requested when the [MODE] field of the registration request packet is "1", and a fixed LAN telephone number is not requested when the [MODE] field is "0". When a fixed LAN telephone number is requested, registration is performed using the LAN telephone number described in the [LAN-NUM] field. When a fixed LAN telephone number is not requested, the LAN is unused and reserved. Not L
Appropriate numbers are assigned from AN telephone numbers. A client terminal using a fixed LAN telephone number registers a fixed LAN telephone number mode and a LAN telephone number to be used in the client terminal in advance.
On the other hand, the server assumes that this LAN telephone number is reserved and normally prohibits its use. In this way, users who want to always use the same LAN telephone number
The same LAN telephone number can always be assigned. In addition, the same LAN telephone number can always be assigned to a client terminal whose IP address changes each time, such as a client terminal having a dynamic IP address. L who registered LAN phone number
The AN telephone number server transmits a notification packet of the processing result to the client terminal requesting the registration. FIG. 11 shows LA
13 shows an example of a processing result notification packet transmitted by an N telephone number server.

As a method of automatically registering a LAN telephone number, a MAC address of a network card can be used. The MAC address is a number given at the time of manufacture to hardware connected to a network, such as a network card, and is “00: A0: 24: 97: 3”.
6: F2 ”, which are hexadecimal numbers separated by“: ”. Higher "00: A0: 24"
Is a code indicating the manufacturer, and the lower “97: 36: F”
Since “2” is a serial number given to each hardware by each manufacturer, the same number does not exist. The LAN terminal number registration request packet sent from the client terminal to the LAN telephone number server uses a packet as shown in FIG. 12, and FIG. 13 shows a terminal management table of the LAN telephone number server. The correspondence between the LAN telephone number, the MAC address, and the IP address can be understood from the terminal management table shown in FIG. 13, but the field of the IP address of the terminal that is not currently turned on is blank. The LAN telephone number server 6 is a client terminal 5
When the LAN telephone number registration packet shown in FIG. 12 is received, the IP address is entered in the item of the terminal from the MAC address value in the packet. In this way, users who want to always use the same LAN telephone number
The same LAN telephone number can always be assigned. In addition, the same LAN telephone number can always be assigned to a client terminal whose IP address changes each time, such as a client terminal having a dynamic IP address.

As a method of automatically registering a LAN telephone number, a user ID number can be used.
The user ID number is given by the system administrator when the LAN telephone number is given in the Internet telephone system in which the present invention is used. The LAN telephone number registration request packet that the client terminal sends to the LAN telephone number server is as shown in FIG.
FIG. 15 shows an ID management table describing the correspondence between LAN telephone numbers and user ID numbers. The terminal management table of the LAN telephone number server is the same as that shown in FIG. 7 described above, and the field of the IP address of the terminal that is not currently turned on is blank. The LAN telephone number server 6 sends the L number as shown in FIG.
When the AN telephone number registration packet is received, the ID management table is first searched to confirm whether the user is registered in the system. If it has been registered, the LAN telephone number of the user with the user ID number is obtained, and the IP address is entered in the terminal item of the terminal management number in the terminal management table. In this way, it is possible to always assign the same LAN telephone number to a user who always wants to use the same LAN telephone number. In addition, like a client terminal having a dynamic IP address, the IP address of its own terminal
The same LAN telephone number can always be assigned to a client terminal whose address changes.

Next, processing for actually performing communication is started. At the start of communication, a LAN telephone number including a server management number and a terminal management number is input from the client terminal 5. Before making a call to the partner terminal, the client terminal 5
The LAN telephone number server 6 is queried for the IP address of the partner terminal with the input LAN telephone number. The LAN telephone number server 6 that has received the inquiry performs a search in its own device and returns the IP address of the corresponding terminal. The client terminal 5 initiates a call to the partner terminal of the received IP address, and starts communication after connection.

The client terminal 5 transmits a terminal management table registration deletion request to the LAN telephone number server 6 when the system is terminated or the power is turned off. The LAN telephone number server 6 that has received this searches the terminal management table 7 and deletes the registration of the terminal having the corresponding LAN telephone number. By doing so, the dynamic IP address assignment enables the terminal to be registered in the terminal management table 7 even if another terminal uses a previously registered IP address. The effective use of a simple IP address becomes possible.

Since the client terminal is automatically registered in the LAN telephone number when the client terminal is started, even when a new client terminal is added, it is not necessary to register the client terminal in the terminal management table of the LAN telephone number server every time. And maintenance can be improved.

[0033]

FIG. 16 shows a configuration based on the premise of the present invention.
Here is an example . This configuration example is an example in which a reservation number management table is used.

A client terminal 1 comprising a personal computer 1601, a microphone 1602, and a speaker 1603 in a network, a terminal connection device 1604, and an analog telephone 160
5 are connected to an IP address assignment server 1606 and a LAN telephone number server 1607. IP of IP address assignment server 1606
The address is “129.60.10.2”, and the IP address assignment server 1606 sends the IP address “129.6”.
0.10.20 "to" 129.60.10.29 "
10 IP addresses are managed. Also, LAN
The IP address of the telephone number server 1607 is "129.6
In the LAN telephone number server 1607, a terminal management table 1608 describing the correspondence between the terminal management number and the IP address, and a reservation number management table 1609 describing the terminal management number reserved in advance. There is.

FIG. 17 shows an example of the terminal management table 1608, and FIG. 18 shows an example of the reservation number management table 1609. The illustrated client terminal 1 is a dynamic IP address client, and an IP address is not normally set. The terminal management number of the client terminal 1 is “2001”, which is the LAN telephone number server 1
607 is described in the reservation management table 1609.
The client terminal 2 has a fixed IP address of “1”.
29.6.10.12 ". The LAN telephone number of the client terminal 2 is “2002”.
This is also a reserved number, and the LAN telephone number server 160
7 is described in the reservation number management table.

In the above network, when the power of the client terminal 1 is turned on, the client terminal 1 transmits to the network by broadcast transmission.
Send a P address request packet. I received this
The P address assigning server sends an IP address value usable for the requesting client terminal, for example, “129.60.1”.
0.20 ”is transmitted. The client terminal 1 receives the I
When the P address “129.60.10.20” is received, the IP address of the own terminal is changed to the IP address “129.60.
10.20 ". Further, in the client terminal 1, Internet telephone software is activated. At that time, the client terminal 1 has the IP address “129.60.10.1” set in advance for the terminal itself.
Terminal management number fixed, terminal management number = “2001”, IP address =
A LAN telephone number registration request packet is transmitted in the form of "129.60.10.20". Upon receiving the registration request packet, the LAN telephone number server 1607 first searches the reservation number management table 1609 of its own terminal. Since the terminal management number “2001” has been registered in the reservation number management table 1609, the terminal management table 16
08, and the IP address “129.60.10.20” of the item of the terminal management number “2001” is registered.

Next, at the client terminal 2, the terminal management number “200” is set as the connection partner from the telephone 1605.
Enter "1". The terminal connection device 1604 sets the IP address “129.60.
The IP address inquiry packet of the terminal having the terminal management number “2001” is transmitted to the LAN telephone number server 1607 of “10.1”. LAN that received the inquiry packet
The telephone number server 1607 searches the terminal management table 1608 of its own terminal. In the terminal management number “2001” of the terminal management table 1608, the IP address “12”
9.6.10.20 "is registered, so LAN
The telephone number server 1607 returns the IP address “129.60.10.20” to the client terminal 2 that has made the inquiry. The IP address “129.60.10.2
The client terminal 2 that has received “0” transmits an Internet telephone call packet to the terminal having the IP address “129.60.10.20”. The call packet reaches the terminal having the IP address "129.60.10.20", that is, the client terminal 1, and thereafter, voice communication is started between the client terminal 2 and the client terminal 1.

As described above, by registering the IP address value of the dynamic IP address client in the LAN telephone number management server at the time of starting the system, it is possible to make a telephone call with an Internet telephone even if the client terminal has an indefinite IP address every time. Becomes In addition, by providing the LAN telephone number server with a reservation number management table, it is possible to always assign the same terminal management number to a certain client terminal.

FIG. 19 shows a first embodiment of the present invention. This embodiment is an example in which a MAC address is used.
PC 1901, microphone 1902,
A client terminal 1 comprising a speaker 1903; a terminal connection device 1904; a client terminal 2 comprising an analog telephone 1905;
And a LAN telephone number server 1707 are connected.
The IP address of the IP address assignment server 1906 is “1”.
29.60.10.2 ”, the IP address assignment server 1906 sends the IP address“ 129.60.10.2 ”.
0 "to" 129.60.10.29 "
Manages P address. The IP address of the LAN telephone number server 1907 is “129.60.10.10.
In “1”, the LAN telephone number server 1907 has a terminal management table 1908 that describes the correspondence between the terminal management number, the IP address, and the MAC address.

FIG. 20 shows an example of the terminal management table 1708. Further, the client terminal 1 is a dynamic IP address client, and an IP address is not normally set. The MAC address of the client terminal 1 is “0”.
0: A0: 24: 97: 36: F2 ", and the terminal management number is registered in the terminal management table 1908 of the LAN telephone number server 1907 as" 2001 ". The client terminal 2 has a fixed IP address of “129.6”.
0.10.12 ". The MAC address of the client terminal 2 is “00: A0: 24: 9
7: 36: F3 ”, the terminal management number is“ 2002 ”, and the terminal management table 1 of the LAN telephone number server 1907 is
908.

In the above-described network, when the power of the client terminal 1 is turned on, the client terminal 1 transmits a broadcast message to the network by broadcasting.
Send a P address request packet. I received this
The P address assigning server 1906 sends the IP address value “129.60.
10.20 ". The client terminal 1 receives the IP address “129.60.10.20”,
Change the IP address of the own terminal to the IP address “129.6”.
0.10.20 ". Further, in the client terminal 1, Internet telephone software is activated.
At that time, the client terminal 1 has the IP address “129.60.10.
For the LAN telephone number server 1907 of “1”, the terminal management number = “2001” and the MAC address = “00: A0:
24: 97: 36: F2 ”, IP address =“ 129.
60.10.20 "in the form of a LAN telephone number registration request packet. LAN that received the registration request packet
The telephone number server 1907 searches the terminal management table 1908 of its own terminal, and searches for the item of terminal management number = “2001”. The MAC address of that item is the MAC address “00: A0: 24: 97: 36:” in the registration request packet.
F2 "and whether it is the same.
"129.60.10.20" is registered in the P address portion.

Next, at the client terminal 2, the terminal management number “200”
Enter "1". The terminal connection device 1904 uses the IP address “129.60.
The IP address inquiry packet of the terminal having the terminal management number “2001” is transmitted to the LAN telephone number server 1907 of “10.1”. LAN that received the inquiry packet
The telephone number server 1907 searches the terminal management table 1908 of the own terminal. The terminal management number “2001” in the terminal management table 1908 includes an IP address “12”.
9.6.10.20 "is registered, so LAN
The telephone number server 1907 returns the IP address “129.60.10.20” to the client terminal 2 that has made the inquiry. The IP address “129.60.10.2
The client terminal 2 that has received “0” transmits an Internet telephone call packet to the terminal having the IP address “129.60.10.20”. The call packet reaches the terminal having the IP address "129.60.10.20", that is, the client terminal 1, and thereafter, voice communication is started between the client terminal 2 and the client terminal 1.

As described above, by registering the IP address value of the dynamic IP address client in the LAN telephone number management server at the time of starting the system, it is possible to make a telephone call with an Internet telephone even if the client terminal has an indeterminate IP address every time. Becomes In addition, by providing the LAN telephone number server with a reservation number management table, it is possible to always assign the same terminal management number to a certain client terminal.

[0044] Figure 21 shows a second embodiment of the present invention. This embodiment is an example in the case where an ID management table is used. PC 2101, microphone 210 in the network
2. a client terminal 1 comprising a speaker 2103;
A client terminal 2 including a terminal connection device 2104 and an analog telephone 2105;
06 and a LAN telephone number server 2107 are connected. The IP address of the IP address assignment server 2106 is “129.60.10.2”, and the IP address assignment server 2106 sets the IP address “129.60.10.
20 "to" 129.60.10.29 ". The IP address of the LAN telephone number server 2107 is “129.60.10.10.
In the LAN telephone number server 2107, the terminal management table 2108 describing the correspondence between the terminal management number and the IP address, the terminal management number reserved in advance and the ID number indicating the user who reserved the number are stored in the LAN telephone number server 2107. I described
D management table 2109. FIG. 22 shows an example of the terminal management table 2108, and FIG. 23 shows an example of the ID management table 2109. Further, the client terminal 1 is a dynamic IP address client, and an IP address is not normally set. In addition, the terminal management number of the client terminal 1 Ri "2001" Der, L AN telephone number server 2
Reserved in advance in the ID management table 2109 of 107
Terminal management number of the client terminal 1 and the number
The ID number “U001” indicating the user who has reserved the number is described. The client terminal 2 has a fixed IP address set to “129.6.10.10”. The LAN telephone number of the client terminal 2 is "2
002 ”, which is also a reserved number, and is stored in the ID management table 2109 of the LAN telephone number server 2107 .
The terminal management number of the client terminal 1 that was previously reserved
And the ID number “U00” indicating the user who reserved the number
2 " is described.

In the above-mentioned network, when the power of the client terminal 1 is turned on, the client terminal 1 transmits the broadcast to the network by broadcasting.
Send a P address request packet. I received this
The P-address assigning server 2106 sends an IP address value, for example, “129.
60.10.20 ". The client terminal 1
Receives the IP address “129.60.10.20” and changes the IP address of its own terminal to the IP address “12.
9.6.10.20 ". Further, in the client terminal 1, Internet telephone software is activated. At that time, the client terminal 1 has the IP address “129.60.
10.1 ”to the LAN telephone number server 2107, the user ID number =“ U001 ”and the terminal management number =“ 200 ”.
1 ", and transmits a LAN telephone number registration request packet in the form of IP address =" 129.60.10.20 ". LAN telephone number server 210 that has received the registration request packet
7 first searches the ID management table 2109 of its own terminal. The user ID number =
Since “U001” and the terminal management number “2001” have been registered, the terminal management table 2108 of the own terminal is searched next, and “129.60.10.20” is added to the IP address of the item of the terminal management number “2001”. Is registered.

Next, in the client terminal 2, the terminal management number “200” is set as the connection partner from the telephone 2105.
Enter "1". The terminal connection device 1904 uses the IP address “129.60.
The IP address inquiry packet of the terminal having the terminal management number “2001” is transmitted to the LAN telephone number server 2107 of “10.1”. LAN that received the inquiry packet
The telephone number server 2107 searches the terminal management table 2108 of its own terminal. In the terminal management number “2001” of the terminal management table 2108, the IP address “12”
9.6.10.20 "is registered, so LAN
The telephone number server 2107 returns the IP address “129.60.10.20” to the client terminal 2 that has made the inquiry. The IP address “129.60.10.2
The client terminal 2 that has received “0” transmits an Internet telephone call packet to the terminal having the IP address “129.60.10.20”. The call packet arrives at the terminal having the IP address "129.60.10.20", that is, the client terminal 1, and thereafter, voice communication is started between the client terminal 2 and the client terminal 1.

As described above, by registering the IP address value of the dynamic IP address client in the LAN telephone number management server at the time of system startup, even if the client terminal has an indeterminate IP address every time, it is possible to make a telephone call via the Internet telephone. Becomes In addition, by providing the LAN telephone number server with an ID management table, it becomes possible to always assign the same terminal management number to a certain client terminal.

Although the first and second embodiments describe the case where the Ethernet is used, the present invention relates to a case where a dial-up connection is made from a general telephone network, or a case where the FDDI or the network is used as the network. The same applies to the case where an ATM is used. Further, the present invention can be applied to the case where the terminal connection device (TA) is a dynamic IP address client, similarly to the present embodiment.

Further, in this embodiment, the terminal identification number of the LAN telephone number and the server identification number each use a four-digit number. However, the number of digits can be changed according to the number of terminals connected to the network. .

[0050]

As described above, according to the present invention,
When a terminal in the network automatically registers the IP address with the LAN telephone number server at the time of startup, the registration can be automatically deleted when the system is shut down. Even if it corresponds to an address, it is possible to always assign the same LAN telephone number to a certain user.

[Brief description of the drawings]

FIG. 1 shows an example of an IP address.

FIG. 2 shows an example of an e-mail address.

FIG. 3 shows a unique LAN telephone number and a LAN telephone number server.

FIG. 4 shows an example of a terminal connection device (TA).

FIG. 5 shows a mechanism of dynamic IP address acquisition.

FIG. 6 shows an example of a dynamic IP address acquisition sequence.

FIG. 7 shows an example of a terminal management table.

FIG. 8 shows an example of a server management table.

FIG. 9 shows an example of a LAN telephone number registration sequence.

FIG. 10 shows a first example of a LAN telephone number registration request packet.

FIG. 11 shows an example of a LAN telephone number registration result notification packet.

FIG. 12 shows a second example of a LAN telephone number registration request packet.

FIG. 13 shows an example of a terminal management table when a MAC address is used.

FIG. 14 shows a third example of a LAN telephone number registration request packet.

FIG. 15 shows an example of an ID management table.

FIG. 16 shows a configuration example based on the premise of the present invention.

FIG. 17 shows an example of a terminal management table 1708.

FIG. 18 shows an example of a reservation number management table 1709.

FIG. 19 shows a first embodiment of the present invention.

FIG. 20 shows an example of a terminal management table 1908.

FIG. 21 shows a second embodiment of the present invention.

FIG. 22 shows an example of a terminal management table 2108.

FIG. 23 shows an example of an ID management table 2109.

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasuhito Hayashi 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Within Nippon Telegraph and Telephone Corporation (56) References 1997 IEICE General Conference A-16- 8 (March 6, 1997) Williams (Micros of Corp), "User Location Service", INTERNET-DRAFT, draft-Williams-uls-00. txt, February 1996, IETF 1997 IEICE General Conference B-8-91 (March 6, 1997) Alexander V. Konst Antinou, "Internet Telephony Directories Services", CSE 6998-043 Advanced Internet Services, Decemmber 6th, 1996, http: // www. cs. columbia. edu / @ akonstan / ais / itds96. html Takahiro Kikuchi et al., “To overcome issues such as interconnectivity”, Nikkei Communication, No. 233, pp. 98-105, Nikkei BP, November 4, 1996 (58) Fields surveyed (Int. Cl. ⁷ , DB name) H04L 12/56 H04L 12/66 H04L 12/46

Claims (4)

(57) [Claims] A data communication terminal capable of converting an analog voice signal into a packet signal for data communication, converting a signal of the analog terminal into a packet signal for data communication, transmitting the signal to a network , and receiving the data signal for a data communication. A terminal connection device (TA) having a function of converting a packet signal of the data communication terminal into a signal for an analog terminal is provided, and each terminal of the data communication terminal and the TA has a unique terminal identification number L.
In an Internet telephone system including a LAN telephone number server which manages the LAN telephone number by providing an AN telephone number, the LAN telephone number server includes a LAN telephone number and a terminal identification inherent in the network system.
Distinguished IP address and hardware-specific MAC
Using the terminal management table for managing the correspondence with the address, receiving the IP address registration request message from the terminal
And received an IP address registration request message from the terminal.
In the received IP address registration request message
MAC address management for LAN phone numbers
If the value matches the value registered in the table beforehand,
IP address in the received IP address registration request message
Address if the MAC address does not match.
Recording process and the terminal's IP address by LAN telephone number from the terminal.
Receiving a query message, and searching the terminal management table for the terminal of the query source.
Reply message including the IP address of the destination terminal
Run and transmitting the message, and in the network terminal, IP address, registration of the terminal to the LAN telephone number server
Transmitting the IP address registration request message;
The telephone number, the current IP address of the terminal, and the
Including a MAC address and a LAN telephone number to the LAN telephone number server.
To send the IP address inquiry message of the destination terminal
Process and the IP address of the destination terminal from the LAN telephone number server
Terminal identification number assigning method characterized by the reply message so as to perform a, a process of receiving including. 2. A data communication terminal capable of converting an analog voice signal into a packet signal for data communication, converting a signal of the analog terminal into a packet signal for data communication, transmitting the packet signal to a network , and receiving the data signal for data communication. includes terminal connection device (TA) having a function of converting the packet signal into a signal for an analog terminal, the user of the respective terminal with the data communication terminal and the TA, LAN telephone a unique terminal identification number Give number and user ID
Incidentally, in an Internet telephone system including a LAN telephone number server for managing the LAN telephone number, the LAN telephone number server is provided with a LAN paid out in advance to a system user.
Terminal tube for managing the correspondence between the IP address is a telephone number and user ID and network systems inherent terminal identifier
Process of receiving an IP address registration request message from the terminal using the
And received an IP address registration request message from the terminal.
In the received IP address registration request message
User ID for the terminal number of LAN
If the value matches the value registered in the
IP address in the IP address registration request message
And if the user IDs do not match, register
Process and the terminal user is using the LAN telephone number from the terminal.
Receiving a terminal IP address inquiry message
Search the terminal management table for the terminal of the inquiry source
Including the IP address of the terminal of the destination user obtained by
Transmitting a return message, and allowing the terminal in the network to register its own IP address with the LAN telephone number server.
A step of sending a recording request message, to the IP address registration request message, LA for the user
N phone number, user ID, and that user will use at that time
The steps include by are IP addresses of terminals, and phase by LAN telephone number for the LAN telephone number server
Inquiry message of the IP address of the terminal used by the hand user
Sending a message from the LAN telephone number server to the terminal being used by the destination user.
Receiving a reply message including the last IP address
Terminal identification number assigning method is characterized in that so as to when the run. 3. A data communication terminal having a data communication terminal capable of converting an analog voice signal into a data communication packet signal, converting the analog terminal signal into a data communication packet signal, transmitting the converted signal to a network , and receiving the received data communication signal. A terminal connection device (TA) having a function of converting a packet signal of the data communication terminal into a signal for an analog terminal is provided, and each terminal of the data communication terminal and the TA has a unique terminal identification number L.
A terminal identification number assigning server connected to an Internet telephone system including an LAN telephone number server for managing said LAN telephone number, said terminal identifying number assigning server being connected to said LAN telephone number server. And the LAN phone number and the
Distinguished IP address and hardware-specific MAC
A terminal management table for managing correspondence with addresses, and a method for receiving an IP address registration request message from a terminal.
And receiving an IP address registration request message from the terminal
In the received IP address registration request message
MAC address management for LAN phone numbers
If the value matches the value registered in the table beforehand,
IP address in the received IP address registration request message
Address if the MAC address does not match.
Means that does not record, and the IP address of the destination terminal by LAN telephone number from the terminal.
Means for receiving an inquiry message, and searching the terminal management table for the terminal of the inquiry source.
Reply message including the IP address of the destination terminal
Terminal identification number assigning server apparatus characterized by comprising means for transmitting a message, the. 4. A data communication terminal capable of converting an analog voice signal into a packet signal for data communication, converting a signal from the analog terminal into a packet signal for data communication, transmitting the signal to a network , and receiving the received data communication signal. A terminal connection device (TA) having a function of converting a packet signal of the data communication terminal into a signal for an analog terminal is provided, and each terminal of the data communication terminal and the TA has a unique terminal identification number L
An AN telephone number and a user ID are given, and the LAN
In the terminal identification number assigning <br/> server device connected to the Internet telephone system including a LAN telephone number server for managing the telephone numbers, the terminal identification number assigning server apparatus a the LAN telephone number server system use LAN paid out to the user in advance
Terminal tube for managing the correspondence between the IP address is a telephone number and user ID and network systems inherent terminal identifier
Table for receiving the IP address registration request message from the terminal.
And receiving an IP address registration request message from the terminal
In the received IP address registration request message
User ID for the terminal number of LAN
If the value matches the value registered in the
IP address in the IP address registration request message
And if the user IDs do not match, register
Means that the destination user is using the LAN telephone number from the terminal.
Means for receiving terminal IP address inquiry message
Search the terminal management table for the terminal of the inquiry source
Including the IP address of the terminal of the destination user obtained by
Terminal identification number assigning server apparatus characterized by comprising means for transmitting a return message, the.