Patent ID: 7979095

Claim:
A method comprising the steps of: providing an In-Vehicle System (IVS) including an in-band signaling modem in a vehicle for mobile, wireless voice and data communication, both the voice and data communications to occur over a single voice call via a voice channel of a digital wireless communication network; the vehicle further including an in-vehicle audio system for entertainment and communication uses; the in-vehicle audio system including a speaker and microphone; deploying a customer application in the IVS, the customer application coupled to the in-band signaling modem for sending data via the in-band signaling modem during a voice call; in the IVS, initiating the voice call via the digital wireless communication network to a remote call taker location; at the call taker location, receiving the voice call initiated from the IVS; sending a predetermined signaling tone from the call taker location, via the voice call, to the IVS preparatory to an in-band data session; and in the IVS, responsive to receiving the predetermined signaling tone, muting the audio system speaker so that occupants of the vehicle will not hear the sounds of data transferring in the form of audio frequency tones between the customer application and the call taker location.