Patent ID: 8675640
Filing Date: 2014-03-18
Classification: H04L

Abstract:
1. A method for connecting to a called terminal, comprising: acquiring, when a primary mobile access gateway control function (mAGCF) entity has a failure, mobile station international integrated service digital network number (MSISDN) information corresponding to the called terminal which is located at an IP multimedia subsystem (IMS) domain, and international mobile subscriber identity (IMSI) information and location area identity (LAI) information that correspond to the MSISDN information; connecting to the called terminal through a selected mAGCF according to the MSISDN information, the IMSI information and the LAI information; wherein acquiring the MSISDN information corresponding to the called terminal which is located at the IMS domain, and IMSI information and the LAI information that correspond to the MSISDN information comprises: acquiring the MSISDN information corresponding to the called terminal which is located at the IMS domain, and the IMSI information and the LAI information that correspond to the MSISDN information from backup data in a backup mAGCF; and wherein before connecting to the called terminal through the selected mAGCF, the method further comprises: