Patent ID: 7656863

Claim:
A method for soft switch call control, comprising the steps of: acquiring, by a soft switch device, an initial address message (IAM) of a calling side originating from a calling party; first analyzing, by the soft switch device, information of the calling party and a called party, creating a context at a media gateway and adding semi-permanent physical terminations for the calling party and the called party into the context when the calling party and the called party are controlled by a same media gateway, the first analyzing including, controlling, by the soft switch device, the media gateway to create the context and to add a semi-permanent physical termination and a ephemeral termination into the context, second analyzing, by the soft switch device, information of the calling party and the called party, to inform the media gateway to delete the ephemeral termination from the context created at the calling side when the calling party and the called party are controlled by the same media gateway, informing, by the soft switch device, the media gateway to add the semi-permanent physical termination at the called side into the context created at the calling side; first transmitting, by the soft switch device, the initial address message (IAM) to a circuit switching network via a signaling gateway at the called side based on the context, the circuit switching network returning an acknowledge message (ACM) and the called party ringing; and second transmitting, by the soft switch device, the address complete message (ACM) to the signaling gateway at the calling side.