I'm working with the M30/AD4 combination and I want to add include location information in the data the unit is sending to the backend. I have an attached GPS, but at some times the GPS signals are not available. I want to use cellular tower information to assist with position determination. How can I do that? Current signal strength is exposed via AT command, but I can't see any way to get at the tower name, or the adjacent tower data. It must be known to the M30, so how can I get at the information? Thanks. Richard.