Patent ID: 8873374

Claim:
A media gateway comprising: a plurality of signal processing units, each unit containing a plurality of digital signal processors, each signal processing unit being uniquely addressable by an Internet Protocol (IP) address; wherein, each signal processing unit has its own address space of User Datagram Protocol (UDP) port numbers, each port number being allocable to a packet stream being processed by a digital signal processor channel on the signal processing unit; and wherein each signal processing unit is configured to perform operations including: accelerating a negotiation of processing resources between the media gateway and a media gateway controller using a two-tier logic, when a fault occurs during a critical time in a call setup process, the two-tier logic including: a) reassigning a port number currently being used to process the packet stream to another digital signal processor on the same signal processing unit without transmitting a change request to a media gateway controller; and b) when a processing resource is available and is not disposed on the current signal processing unit, the media gateway transmits a change request message to the media gateway controller, specifying (i) an IP address of a new signal processing unit and (ii) a new port number, and the media gateway controller informs an IP terminal of the change in IP address and port number.