Patent ID: 7646757

Claim:
A method in a radio modem device for use in processing data packets from a host device, the radio modem device being adapted to communicate with a cellular telecommunications network over a wireless link and communicate with the host device over a wired serial link, the method comprising the steps of: maintaining a Point-to-Point Protocol (PPP) connection between the host device and the radio modem device over the wired serial link; establishing a packet data service attachment with the cellular telecommunications network over the wireless link; maintaining an attachment state of the packet data service attachment during operation; receiving data packets from the host device; removing a PPP wrapper of data packets to reveal a destination IP address and a destination UDP or TCP port number; identifying whether the destination IP address and the UDP or TCP port number match an IP address and UDP or TCP port number of a radio modem server of the radio modem device; in response to identifying a mismatch between the IP addresses or the UDP or TCP port numbers: causing the data packets to be routed to a server, over the wireless link, using the packet data service attachment with the cellular telecommunications network; in response to identifying a match between the IP addresses and the UDP or TCP port numbers: causing the data packets to be routed to a server; receiving a command code in the data packets at the radio modem server; and if the command code is for registering for periodic updates of radio information, then periodically sending, to the host device, a plurality of updates of the radio information in response to receiving the command code.