Telephone controller for VoIP

• US 20010005366A1
• Filed: 12/26/2000
• Published: 06/28/2001
• Est. Priority Date: 12/27/1999
• Status: Active Grant

• Current Assignee: NEC Platforms, Ltd. (NEC Corporation)
• Original Assignee: NEC Infrontia Corporation (NEC Corporation)
• Inventors: Kobayashi, Yoshikazu
• Granted Patent: US 7,269,161 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 61/45 Network directories; Name-to-address mapping
• CPC Class Codes: H04L 61/5038 for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
• CPC Class Codes: H04L 61/5076 Update or notification mechanisms, e.g. DynDNS
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42

Abstract

The invention relates to a telephone controller that controls plural telephone sets via LAN connected to the Internet and the telephone controller is composed of a receiver that receives a message sent by a telephone set for requesting an IP address, a control circuit that generates the ID and the extension of the telephone set in case the message for requesting the IP address is received, an IP address allocation circuit that allocates the IP address of the telephone set, a memory that stores the ID, the extension and the IP address and a notifying unit that notifies the telephone set of the ID, the extension and the IP address.

Claims

1. A telephone controller that controls plural telephone sets via LAN connected to the Internet, comprising:

a receiver that receives a message sent by the telephone set for requesting an IP address;

a control circuit that generates the ID and the extension of the telephone set in case the message for requesting the IP address is received;

an IP address allocation circuit that allocates the IP address of the telephone set;

a table that stores the ID, the extension and the IP address; and

a notifying unit that notifies the telephone set of the ID, the extension and the IP address.

2. A telephone controller according to

claim 1

, wherein:

when its extension or its user name is included in the message for requesting the IP address, the control circuit generates its ID based upon the extension or the user name.

3. A telephone controller according to

claim 1

, wherein:

the ID is composed of the domain name of the telephone controller, the extension and the user name.

4. A telephone communication system composed of LAN connected to the Internet, a telephone controller and plural telephone sets that mutually communicate via the LAN, wherein:

the telephone set is provided with a transmitter that transmits a message for requesting an IP address to the telephone controller; and

the telephone controller is composed of a receiver that receives the message for requesting the IP address, a control circuit that generates the ID and the extension of the telephone set in case the message for requesting the IP address is received, an IP address allocation circuit that allocates the IP address of the telephone set, a table that stores the ID, the extension and the IP address and a notifying unit that notifies the telephone set of the ID, the extension and the IP address.

5. A telephone controller according to

claim 4

, wherein:

when its extension or its user name is included in the message for requesting the IP address, the control circuit generates its ID based upon the extension or the user name.

6. A telephone controller according to

claim 4

, wherein:

the ID is composed of the domain name of the telephone controller, the extension and the user name.

7. A telephone controller according to

claim 4

, wherein:

in case a connection request message is sent from the telephone set, the control circuit acquires an IP address corresponding to ID by retrieving the table using the ID included in the connection request message and notifies a telephone set to which the IP address is allocated of call in coming.