Patent ID: 9100487
Filing Date: 2015-08-04
Classification: H04M,H04W

Abstract:
1. A method of operating a wireless communication system, the method comprising: identifying a voice call directed to a user device and alerting the user device of the voice call, wherein the voice call is directed to the user device over a cellular voice link; determining that the user device has not answered the voice call; determining a data congestion status of cellular data link resources of the wireless communication system; when the data congestion status indicates data congestion above a threshold level, then routing the voice call over the wireless communication system to a voicemail service provided by the wireless communication system; and when the data congestion status indicates the data congestion below the threshold level, then establishing a data connection over the cellular data link resources of the wireless communication system with a voicemail client on the user device and routing the voice call to the voicemail client on the user device over the data connection.