Patent ID: 8369393

Claim:
A method, comprising: 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 communication and the data communication occur over a single voice call via a voice channel of a digital wireless communication network; the IVS further including a customer application coupled to the in-band signaling modem for sending data via the in-band signaling modem during a voice call; the vehicle further including an in-vehicle audio system for entertainment and communication uses; the in-vehicle audio system including a speaker and microphone; in the IVS, initiating the voice call via the digital wireless communication network to a remote call taker location; after initiating the voice call, receiving at the IVS, via the voice call, a predetermined signaling tone originating from the call taker location 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.