| CPC H04S 3/008 (2013.01) [H04S 2400/01 (2013.01)] | 19 Claims |

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1. A method comprising:
(a) selecting a first audio channel;
(b) transmitting, via a speaker associated with a first computing device, a first audio transmission to a second computing device using the first audio channel; and
(c) responsive to not receiving, via a microphone associated with the first computing device, an acknowledgment of the first audio transmission, repeating (a) and (b) to select a second audio channel and transmit the first audio transmission using the second audio channel.
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