Patent ID: 9247442
Filing Date: 2016-01-26
CPC Classification: H04L,H04W

Claim Text:
1. A call monitoring method for detecting an error at a Mobile Switching Center (MSC) in a Bearer-Independent Call Control (BICC) environment using an Internet Protocol (IP) as a bearer, the method comprising: receiving connection information about a called exchange from an other MSC; requesting IP resource allocation for configuring a termination to a Media GateWay (MGW) controlled by the MSC based on the received connection information about the called exchange; determining, upon receipt of a resource allocation failure message from the MGW, whether a cause of a resource allocation failure is an IP allocation error; setting associated IP resources as having an IP allocation error, if an IP resource allocation failure rate received from the resource manager exceeds a predetermined threshold; isolating a BICC route including the IP resources from a service, if the IP resources are associated as having the IP allocation error; and transmitting the resource allocation failure message to a resource manager, if the cause of the resource allocation failure is the IP allocation error, wherein the isolating of the BICC route comprises transmitting error information about the IP resources associated as having the IP allocation error to the other MSC.