13. A system for configuring a speech recognition unit in a vehicle, the system comprising: means for receiving a noise error from the speech recognition unit responsive to a user voice command; and means for iteratively reducing a confidence threshold for an appropriate grammar set responsive to the received noise error and re-attempting speech recognition in the vehicle of a voice command using the reduced confidence threshold, wherein the means for iteratively reducing a confidence threshold and re-attempting speech recognition further comprises means for storing the voice command prior to reducing the confidence threshold and means for attempting speech recognition in the vehicle on the stored voice command using the reduced confidence threshold; wherein the means for receiving a noise error and the means for iteratively reducing a confidence threshold each comprise a processor that executes computer programming that is stored in memory in the vehicle.
13. A system for configuring a speech recognition unit in a vehicle, the system comprising: means for receiving a noise error from the speech recognition unit responsive to a user voice command; and means for iteratively reducing a confidence threshold for an appropriate grammar set responsive to the received noise error and re-attempting speech recognition in the vehicle of a voice command using the reduced confidence threshold, wherein the means for iteratively reducing a confidence threshold and re-attempting speech recognition further comprises means for storing the voice command prior to reducing the confidence threshold and means for attempting speech recognition in the vehicle on the stored voice command using the reduced confidence threshold; wherein the means for receiving a noise error and the means for iteratively reducing a confidence threshold each comprise a processor that executes computer programming that is stored in memory in the vehicle. 16. The system of claim 13 , wherein the means for iteratively reducing and re-attempting further comprises: means for storing a repeated user voice command in the telematics unit; and means for attempting to recognize the stored repeated user voice command at the speech recognition unit after the confidence threshold is reduced.