Patent ID: 9094261
Filing Date: 2015-07-28
Classification: H04L,H04M

Abstract:
1. A method for establishing a call over a packet network said method comprising: receiving, at a call control manager located on the packet network, a call request via an originating trunk on a packet network from an originating call device of a calling party; determining, by the call control manager, a transmission path from the originating trunk to a terminating segment of a terminating call device; determining status of the originating trunk; determining status of the terminating segment, in response to a determination that the status of the originating trunk is normal; responsive to a determination that the status of the originating trunk and terminating segment are within a first range, establishing the call between the originating and terminating call device over the transmission path at a first data rate; responsive to a determination that the status of the originating trunk or terminating segment is within a second range, determining whether the originating trunk and terminating segment can operate at a lower data rate; responsive to a determination that the originating trunk and terminating segment can operate at the lower data rate, establishing the call over the transmission path between the originating call device and terminating call device at the lower data rate, wherein establishing the call over the transmission path between the originating call device and terminating call device at the lower data rate includes sending an invite with a lower speed CODEC to the terminating segment and receiving a positive response message from the terminating segment; and rejecting the call request if status of either the originating trunk or terminating segment is within a third range, and sending a reject message to the originating call device.