Patent ID: 6341143
Filing Date: 2002-01-22
Classification: G06F,H04L,H04M,Y02D

Abstract:
A system for updating operating code in a reprogrammble modem, comprising:a field-upgradable modem having: telephone line interface means for connection to a telephone line; control means connected to the telephone line interface means, for executing existing operating code to control the modem; memory means connected to the control means for storing the existing operating code and for storing a boot program; and the control means further operable for executing the boot program to receive updated operating code packets from a remote computer over the telephone line, for checking the validity of the packets before replacing the existing operating code in the memory means with the updated operating code, executed upon a receipt of an upgrade command from the remote computer; the modem executing software to communicate with the remote computer connected to the telephone line; and the remote computer further executing software to communicate with the modem to place the updated operating code into updated operating code packets and to control transfer of said updated operating code packets from the remote computer to the modem over the telephone line.