Patent ID: 9413886
Filing Date: 2016-08-09
CPC Classification: H04M,H04W

Claim Text:
1. A method comprising: determining, at a first mobile unit, that voice packets are not being received at the first mobile unit over at least one channel associated with an air interface because channel quality of said at least one channel has deteriorated so that said at least one channel is unable to support transmission of voice packets, wherein deterioration of said at least one channel is indicated by at least one of a signal-to-noise ratio, a signal-to-interference-plus-noise ratio, a bit error rate, and a pilot signal strength measured by the first mobile unit for signals received over the air interface; and rendering a first user-detectable signal in response to determining that voice packets are not being received at the first mobile unit over said at least one channel because said at least one channel is unable to support transmission of voice packets, wherein the first user-detectable signal is rendered while said channel quality is sufficient to maintain said at least one channel and while said at least one channel remains unable to support transmission of voice packets.