| 摘要 |
A method is provided for changing over from a primary home subscriber server (HSS) to a backup HSS in an IP network, said network having a plurality of call server control function (CSCF) (or application) servers, in which, after detection of a loss of connection between one of said CSCF (or application) servers and a primary HSS to which it is normally connected, the CSCF (or application) server connects itself to a backup HSS. The method also comprises the following steps: a) a predetermined broadcast device is informed of said loss of connection with said HSS; b) said broadcast device sends a predetermined fault message at least to the other CSCF (or application) servers that are normally connected to said primary HSS, said message containing the reference of said primary HSS; and c) said other CSCF (or application) servers connect themselves to said backup HSS.
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