Call re-direction method for an sip telephone number of an sip client in a combined wired and packet switched network

• US 20060195584A1
• Filed: 05/10/2004
• Published: 08/31/2006
• Est. Priority Date: 08/14/2003
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Baumann, Thomas
• Application Number:
  US10/568,236
• Publication Number:
  US 20060195584A1
• Time in Patent Office: Days
• US Class Current: 709/227
• CPC Class Codes: H04M 3/54 Arrangements for diverting calls for one subscriber to another predetermined subscriber based on the calling party profile H04M3/42059; based on location H04M3/42348; based on presence H04M3/42365; to voice mail H04M3/53308
• CPC Class Codes: H04M 7/128 Details of addressing, directories or routing tables

Abstract

When a specific numerical sequence and the SIP telephone number are entered on a telephone of any subscriber connection of switching equipment that is allocated to the communications network, the numerical sequence is evaluated in such a way that a first message containing the telephone number of the subscriber connection and the entered SIP telephone number is transmitted to a media gateway controller of the communications network. The controller transmits a second message containing the transmitted telephone number of the subscriber connection and the SIP telephone number to a SIP registrar, which saves the telephone number as the new current telephone number for calls to the SIP telephone number. Calls for the SIP telephone number are then re-directed to the current telephone number from the location service database.

Claims

1-7. -7. (canceled)

8. A method for setting up a call re-direction for a SIP telephone number of a SIP client in a communication network, comprising:

detecting at a PSTN switching equipment, a sequence and a SIP telephone number entered at a PSTN subscriber telephone;

sending a first message having a telephone number of the PSTN subscriber telephone and the SIP telephone number, the first message sent from the PSTN to a Media Gateway Controller of the communications network;

sending a second message with the PSTN subscriber telephone number and the SIP telephone number, the second message sent from the Media Gateway Controller to a SIP Registrar of the communication network;

storing the PSTN subscriber telephone number in a Location Service database as a new contact address for the SIP telephone number;

determining the new contact address from the Location Service database for a call for the SIP telephone number; and

re-directing the call to the new contact address.

9. The method according to claim 8, wherein after the sequence is entered, a subscriber authentication is made.

10. The method according to claim 8, wherein the second message is a SIP:

REGISTER message.

11. The method according to claim 8, wherein the first message is a ISUP:

IAM message.

12. The method according to claim 11, wherein the second message is a SIP:

REGISTER message.

13. The method according to claim 8, wherein after storing the PSTN subscriber telephone number in a Location Service database, a confirmation is sent to the Media Gateway Controller.

14. The method according to claim 13, wherein the confirmation is a SIP:

200 OK message.

15. The method according to claim 8, wherein the PSTN subscriber telephone is connected to PSTN switching equipment via Voice-over-DSL, Voice-over-Cable or Voice-over IP trunking technology.

16. A method for setting up a call re-direction for a SIP telephone number of a SIP client in a communication network, comprising:

detecting at a PSTN switching equipment, a sequence and a SIP telephone number entered at a PSTN subscriber telephone;

sending a ISUP;

IAM having a telephone number of the PSTN subscriber telephone and the SIP telephone number, the ISUP;

IAM sent from the PSTN to a Media Gateway Controller of the communications network;

sending a SIP;

REGISTER having the PSTN subscriber telephone number and the SIP telephone number, the SIP;

REGISTER sent from the Media Gateway Controller to a SIP Registrar of the communication network;

storing the PSTN subscriber telephone number and a domain of the Media Gateway Controller associated with the PSTN subscriber telephone in a Location Service database as a new contact address for the SIP telephone number;

determining the new contact address from the Location Service database for a call to the SIP telephone number; and

re-directing the call by modifying a SIP;

INVITE message to replace a invited number with the new contact address.

17. A method for setting up a call re-direction for a SIP telephone number of a SIP client in a communication network, comprising:

receiving from a Media Gateway Controller of a PSTN subscriber, a first message having a telephone number of the PSTN subscriber, a domain of the PSTN subscriber Media Gateway Controller, the SIP telephone number and a domain of the SIP telephone number;

storing the PSTN subscriber telephone number and the domain in a Location Service database as a new contact address for the SIP telephone number;

receiving an second message having the SIP telephone number as a telephone number being called and the SIP telephone number domain;

determining the new contact address from the Location Service database for the SIP telephone number;

re-directing the call by modifying the second message to replace an called number and SIP telephone number domain with the new contact address; and

sending the modified message toward the PSTN subscriber Media Gateway Controller.

18. The method according to claim 17, wherein the first message is a SIP:

REGISTER message, the second message is a SIP;

INVITE message, and the modified message is a SIP;

INVITE.