Patent ID: 8976665
Filing Date: 2015-03-10
Classification: H04L,H04M,H04W

Abstract:
1. A method for routing a call, said method comprising: receiving from a first network a call request from a calling party to call a called party at a network address of a second network; determining a potential call path to connect the calling party from the first network to the called party at the network address of the second network; determining whether the potential call path is impaired, wherein an impaired status indicates that the potential call path is between a normal status and a congested status; responsive to a determination that the potential call path is impaired, determining whether a terminating line of the potential call path has a capability of using a lower bandwidth CODEC; responsive to determining that a lower bandwidth CODEC cannot be used for the call, accessing network performance information associated with a plurality of potential call paths, wherein the performance information is based on performance information packets (PIP) generated by network nodes along each of the potential call paths; determining a condition of each of the call paths within the plurality of potential call paths based on the network performance information associated with each of the call paths; comparing the condition of each of the call paths within the plurality of potential call paths based on the network performance information associated with each of the call paths; selecting a second call path based on a determination that the second call path offers the best quality of service among the plurality of potential call paths based on a comparison of the network performance information associated with each of the call paths within the plurality of potential call paths; and routing the call over the second call path to enable the calling party to communicate with the called party at the network address of the second network, wherein the condition of the second call path is determined to be better than that of the potential call path.