Patent ID: 8213953
Filing Date: 2012-07-03
Classification: H04M

Abstract:
1. A method in a wireless wide area network, the method comprising: receiving a request to originate a call from a first wireless device to a second wireless device, wherein the first wireless device is in a first coverage area served by a first access point of a first serving system and the second wireless device is in a second coverage area served by a second access point of a second serving system; determining a current load of the first coverage area; based on the current load of the first coverage area, the first serving system selecting a plurality of first-device vocoders that are supported by the first wireless device; the first serving system sending an indication of the plurality of first-device vocoders to the second serving system; the second serving system determining one or more second-device vocoders that are supported by the second wireless device; the second serving system comparing the plurality of first-device vocoders against the one or more second-device vocoders to determine whether any of the first-device vocoders match any of the second-device vocoders; and in response to a vocoder match, the second serving system sending the first serving system an indication that the call can be established with vocoder bypass and an indication of which vocoder in the plurality of first-device vocoders to use for the call.