METHOD AND DEVICE FOR THE BIDIRECTIONAL ADDRESS CONVERSION IN SIP-CONTROLLED DATA STREAMS BETWEEN IPV4 AND IPV6 DATA TERMINALS

• US 20110196975A1
• Filed: 09/24/2009
• Published: 08/11/2011
• Est. Priority Date: 09/25/2008
• Status: Active Grant

• Current Assignee: Unify Patente GmbH & Co. KG (Atos SE)
• Original Assignee: Unify GmbH & Co. KG (Atos SE)
• Inventors: Horvath, Ernst, Zingerle, Meinard
• Granted Patent: US 8,554,925 B2
• Time in Patent Office: Days
• US Class Current: 709/228
• CPC Class Codes: H04L 2101/659 Internet protocol version 6 [IPv6] addresses
• CPC Class Codes: H04L 61/251 between different IP versions
• CPC Class Codes: H04L 65/1045 Proxies, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 69/167 Adaptation for transition between two IP versions, e.g. between IPv4 and IPv6 translation of Internet protocol [IP] addresses H04L61/2503

Abstract

The invention relates to a method and to a device for the bidirectional address conversion in SIP-controlled data streams between IPv4 data devices (T2) and IPv6 data terminals (T1) in mixed IPv4 and IPv6 data networks using an address converter (AU) and an address converter (AU) integrated in a SIP server (S1 or S2).

Claims

1. A method of bidirectional address conversion in Session-Initiated-Protocol (“

SIP”

)-controlled data streams between IPv4-enabled data terminals and IPv6-enabled data terminals, using an address converter and an SIP server, comprising;

acknowledging an initiation of a connection from an IPv6-enabled data terminal as a calling party to an IPv4-enabled data terminal as a called party, by sending a message refusing the connection from the called party through an SIP server,

generating a respective compatible IPv4 address through the address converter as a target address for connection and transmission of the compatible IPv4 address to the IPv4-enabled data terminal in order to initiate a connection from the IPv6-enabled data terminal to the IPv4-enabled data terminal,

generating a respective compatible IPv6 address through the address converter as a target address for connection and transmission of the compatible IPv6 address to the IPv6-enabled data terminal,

receiving through the address converter data packets sent by the IPv4-enabled data terminal and IPv6-enabled data terminal to the compatible IPv6 address and compatible IPv4 address, and

exchanging the target addresses in the data packets by the address converter and transmitting the data packets to the compatible addresses of the IPv4-enabled data terminal and IPv6-enabled data terminal.

3. The method of claim 1, wherein the address converter is located in the SIP server.

4. The method of claim 1, wherein the address converter is located in a server separate from the SIP server.

5. The method of claim 1, wherein the address converter is the address conversion function of a conference server.

2. A method of bidirectional address conversion in SIP-controlled data streams between IPv4-enabled data terminals and IPv6-enabled data terminals, using an address converter and an SIP server, comprising:

acknowledging initiation of a connection from an IPv4-enabled data terminal as the calling party to an IPv6-enabled data terminal a called party, sending of a message refusing the connection from the called party through an SIP server;

generating a respective compatible IPv4 address by an address converter a target address for connection and transmission of this IPv4 address to the IPv4-enabled data terminal to initiate a connection from the IPv6-enabled data terminal to the IPv4-enabled data terminal,

generating a respective compatible IPv6 address by the address converter as a target address for connection and transmission of this compatible IPv6 address to the IPv6-enabled data terminal,

receiving receipt by the address converter of data packets sent by the IPv4-enabled data terminal and IPv6-enabled data terminal to these respective target addresses, and

exchanging target addresses in the data packets through the address converter and transmitting the data packets to the target addresses of the IPv4-enabled data terminal and IPv6-enabled data terminal.

6. Equipment for bidirectional address conversion in SIP-controlled data streams between IPv4-enabled SIP servers comprising storage media comprising computer-executable code that when implemented:

recognizes, in a SIP server, initiation of a connection from an IPv6-enabled data terminal to an IPv4-enabled data terminal wherein the connection results from a message sent from the IPv4-enabled data terminal in response to a connection request from the IPv6-enabled data terminal, refusing the connection request,

an address converter, wherein for each of a plurality of participating IPv4-enabled data the address converter generates compatible IPv4 address as a target address for the connection and transmits it to the IPv4-enabled data terminal,

wherein the address converter for each of a plurality of participating IPv6-enabled data terminals generates a compatible IPv6 address as a target address for the connection and transmits it to the IPv6-enabled data terminal,

wherein the address converter receives data packets sent from the data terminals to the respective target addresses and makes a corresponding exchange of target addresses in the data packets, and

wherein the address converter sends the data packets to the target addresses of the respective connection partners.

8. The equipment of claim 6, wherein the address converter (AU) is located in the SIP server.

9. The equipment of claim 6, wherein address converter (AU) is located in a server separate from the SIP server (S1).

7. Equipment for bidirectional address conversion in SIP-controlled data streams between IPv4-enabled data terminals and IPv6-enabled data terminals, using an address converter and an SIP server comprising storage media having executable code that, when implemented:

recognizes in the SIP server, for initiation of a connection from an IPv4-enabled data terminal to an IPv6-enabled data terminal, a message sent from the IPv6-enabled data terminal in response to a connection request from an IPv4-enabled data terminal, refusing this connection request,

wherein the address converter, for each of the participating IPv4-enabled data terminals, generates a compatible IPv4 address as a target address for connection and transmits transmit it to the IPv4-enabled data terminal,

wherein the address converter, for each of the participating IPv6-enabled data terminals generates a compatible IPv6 address as a target address for the connection and transmits it to the IPv6-enabled data terminal,

wherein the address converter, receives data packets sent from the data terminals to the respective target addresses and makes a corresponding exchange of target addresses in the data packets, and

j) wherein the address converter sends the data packets to the target addresses of the respective connection partners.

10. The equipment of claim 7, wherein the address converter is located in the SIP server.

11. The equipment of claim 7, wherein the address converter is located in a server separate from the SIP server (S1).