Patent ID: 7894410
Filing Date: 2011-02-22
Classification: H04L

Abstract:
1. A method for implementing backup based on session border controllers, comprising: registering, by a terminal device, to a first soft switch via a first session border controller; registering, by the terminal device, to the first soft switch via a second session border controller, when a failure concerning the first session border controller occurs; registering, by the terminal device, to a second soft switch via one of the first session border controller and the second session border controller, when a failure concerning the first soft switch occurs; and wherein registering to the first soft switch via the second session border controller comprises: sending, by the terminal device, a registration message and an OPTIONS message to the second session border controller, wherein a new CALLID is carried in the registration message; forwarding, by the second session border controller, the registration message from the terminal device to the first soft switch; receiving, by the first soft switch, the registration message; and performing, by the first soft switch, an authentication process for the terminal device according to the new CALLID carried in the registration message.