Patent ID: 8537747

Claim:
A packet data origination method for use by a vehicle telematics unit to provide a wireless data communication from the telematics unit to a call center, comprising the steps of: (a) determining if there is an existing packet data protocol (PDP) context for the telematics unit; (b) determining, when an existing PDP context is found, whether there is an existing packet data connection is available between the telematics unit and call center and, if so, using the existing packet data connection to transmit the data, and if not, then attempting to establishing a new packet data connection between the telematics unit and call center as part of carrying out a nested iterative process to obtain a new PDP context; (c) obtaining a packet data connection to the call center via either the existing PDP context or the new PDP context; and (d) transmitting data over the packet data connection from the telematics unit to the call center.