Hey all, Wrote a C# app to tunnel through a serial port adapter to probe a batch of air cards to get information out of them. I am using AT (Hayes) commands to try to pull info.. (i.e. ESN = AT+GSN). I am having a bit of trouble pulling the phone numbers out of the internal Novatel e725 (aka. Dell 57xx) air cards. I tried the command AT+CNUM which works for AT&T/Cingular cards but it is returning ERROR for these Novatel cards. Can anyone else who knows this archaic language suggest an alternative way to pull the phone number off the air card?