Method and device for realizing IP multimedia subsystem disaster tolerance

  • US 8,069,365 B2
  • Filed: 04/23/2009
  • Issued: 11/29/2011
  • Est. Priority Date: 10/24/2006
  • Status: Active Grant
First Claim
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1. A method for realizing an Internet protocol multimedia subsystem (IMS) disaster tolerance, comprising:

  • receiving, by a serving call session control function (S-CSCF), a user registration, and backing up necessary data which is required when a user service processing is restored on a storage entity in a network;

    receiving, by an interrogating CSCF (I-CSCF) of the user'"'"'s home domain, a service request of the user, and if it is found that the S-CSCF currently providing a service for the user fails, assigning a new S-CSCF to the user, and forwarding the service request to the newly assigned S-CSCF; and

    interrogating and acquiring, by the newly assigned S-CSCF, subscription data of the user and the necessary data backed up by the original S-CSCF from the storage entity, and then restoring the user service processing according to the subscription data and the necessary data.

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