VoIP terminal and method for providing multi-call service

• US 20080137647A1
• Filed: 11/27/2007
• Published: 06/12/2008
• Est. Priority Date: 12/07/2006
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Han, Jae-Hoon
• Application Number:
  US11/987,109
• Publication Number:
  US 20080137647A1
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 65/1045 Proxies, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1059 End-user terminal functionalities specially adapted for real-time communication
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1073 Registration or de-registration
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]

Abstract

A multi-call VoIP terminal constructed with a proxy server interworking unit, connecting the multi-call VoIP terminal to a proxy server to enable communications with an external network terminal; an Sub terminal checking unit disposed to check a physical interworking status of the multi-call VoIP terminal to an IP terminal and a communicating state of the IP terminal; and a sub terminal interworking unit converting an IP address of a packet header in order to relay a packet between the proxy server and the IP terminal when the IP terminal is determined to be in a busy state when checked by the Sub terminal checking unit. The multi-call VoIP terminal and a multi-call service method can realize packet relaying through IP address conversion without an expansion or modification to a server, so that a multi-call service can be provided to users in a simple fashion.

Claims

1. A Voice over Internet Protocol (VoIP) network, comprising:

a proxy server;

an Internet Protocol (IP) terminal functioning as a Session Initiation Protocol (SIP) user agent and providing a VoIP telecommunication service according to a predetermined protocol; and

a multi-call VoIP terminal registering and managing said IP terminal, wherein said multi-call VoIP terminal, upon receiving a VoIP service packet, selectively processes the packet and relays the packet to said registered IP terminal according a state of communication by said IP terminal.

2. The VoIP network according to claim 1, with said multi-call VoIP terminal comprising:

an Sub terminal checking unit checking a physical interworking status and a data communication state of said IP terminal; and

a sub terminal interworking unit converting an IP address of a packet header in order to relay a packet between said proxy server and said IP terminal when said IP terminal is busy when checked by said Sub terminal checking unit.

3. The VoIP network according to claim 2, with said sub terminal interworking unit converting the IP address by converting a destination field value of the packet header, which includes an address value of said multi-call VoIP terminal, into an IP address of said IP terminal, in a case of bypassing the packet from said proxy server to said IP terminal.

4. The VoIP network according to claim 2, with said sub terminal interworking unit converting the IP address by converting a source field of the packet header said source field comprising an IP address value of said IP terminal, into an address of said multi-call VoIP terminal, when bypassing the packet from said IP terminal to said proxy server.

5. The VoIP network according to claim 2, with said multi-call VoIP terminal further concluding a message processor processing the packet when said IP terminal is not busy when checked by said Sub terminal checking unit.

6. The VoIP network according to claim 1, with said multi-call VoIP terminal managing said IP terminal by allocating an ID same as the ID to said IP terminal, wherein the ID is equal to the ID of said multi-call VoIP terminal and is allowed by said proxy server.

7. A multi-call Voice over Internet Protocol (VoIP) terminal, comprising:

a proxy server interworking unit connects said multi-call VoIP terminal to a proxy server to communicate with an external network terminal;

an Sub terminal checking unit disposed to check a physical interworking status of said multi-call VoIP terminal to an Internet Protocol (IP) terminal and a data communication state of the IP terminal; and

a sub terminal interworking unit disposed to convert an IP address of a packet header in order to relay a packet between the proxy server and the IP terminal when said IP terminal is busy when checked by said Sub terminal checking unit.

8. The multi-call VoIP terminal according to claim 7, with said sub terminal interworking unit converting the IP address by converting a destination field value of the packet header, said destination field including an address value of said multi-call VoIP terminal, into an IP address of the IP terminal when relaying the packet from the proxy server to the IP terminal.

9. The multi-call VoIP terminal according to claim 7, with said sub terminal interworking unit converting the IP address by converting a source field of the packet header said source field including an IP address value of the IP terminal, into an address of said multi-call VoIP terminal when relaying the packet from the IP terminal to the proxy server.

10. The multi-call VoIP terminal according to claim 7, further comprising a terminal status manager disposed to manage status of said multi-call VoIP terminal and a status of the IP terminal in order to prevent a contention between the multi-call VoIP terminal and the IP terminal.

11. A method of providing a multi-call service in a Voice over Internet Protocol (VoIP) network, comprising:

at an Internet Protocol (IP) terminal registering in a multi-call VoIP terminal;

at the multi-call VoIP terminal, receiving a packet from one of the IP terminal and a proxy server; and

at the multi-call VoIP terminal when the IP terminal is busy, converting an IP address of the received packet to relay the packet between the IP terminal and the proxy server.

12. The method according to claim 11, with said step of converting an IP address of the received packet comprising converting a destination field value of a packet header, said destination field value comprising an address value of the multi-call VoIP terminal, into an IP address of the IP terminal when relaying the packet from the proxy server to the IP terminal.

13. The method according to claim 11, with said step of converting an IP address of the received packet comprised of converting a source field of a packet header, said source field including an IP address value of the IP terminal, into an address of said multi-call VoIP terminal when relaying the packet from the IP terminal to the proxy server.

14. The method according to claim 11, wherein said step of registering in the multi-call VoIP terminal comprises:

at the IP terminal, transmitting a register message to the multi-call VoIP terminal; and

at the multi-call VoIP terminal, allocating an ID to the IP terminal, wherein the ID is equal to the ID of said multi-call VoIP terminal and is allowed by the proxy server.

15. The method according to claim 11, further comprising:

at the multi-call VoIP terminal, individually processing the packet to perform a VoIP telecommunication via the proxy server when the IP terminal is not busy.

16. A method of providing a multi-call service in a Voice over Internet Protocol (VoIP) network, comprising:

at an Internet Protocol (IP) terminal registering in a multi-call VoIP terminal;

at the multi-call VoIP terminal, receiving an invite message from an external network terminal; and

at the multi-call VoIP terminal, carrying out general VoIP session establishment according to the invite message when said IP terminal is not physically connected to said multi-call VoIP terminal,

at the multi-call VoIP terminal, checking a communication state of said IP terminal when said IP terminal is physically connected to said multi-call VoIP terminal,

at the multi-call VoIP terminal, transmitting an invite cancel message to said sub terminal when the checked communication state of said IP terminal can not be enabled, converting an IP address of a header of the invite message and delivering the invite message to the IP terminal when the checked communication state of said IP terminal can be enabled.