Patent ID: 7864048
Filing Date: 2011-01-04
Classification: H04L,H04M,H04W

Abstract:
1. A communication system comprising: a service node; a wireless modem configured to determine a first location of the wireless modem and report the first location of the wireless modem to the service node in response to the wireless modem entering an initial powered on state; the wireless modem further comprising a dead reckoning device configured to receive power from a battery when the wireless modem enters a powered off state and determine a positional displacement of the wireless modem during transit from the first location while the wireless modem is in the powered off state; in response to the wireless modem being moved further than a predetermined positional displacement from the first location and entering a subsequent powered on state, the wireless modem is configured to determine a second location of the wireless modem based on the positional displacement and report the second location to the service node; wherein if the wireless modem successfully reports the second location to the service node, then the wireless modem is configured to enable voice over Internet protocol (VoIP) circuitry of the wireless modem, and wherein if the wireless modem fails to report the second location to the service node, then the wireless modem is configured to disable the VoIP circuitry and prompt a user of the wireless modem for a present location of the wireless modem.