Just done a data usage test in windows using 'Data Usage Overview' and it says 508mb, Router says 845mb which is quite a discrepancy ? Next to the 845mb reading is a box saying 'Correct', what does...

Just bought this then realised it does not have an RJ11 phone socket like some others do. I want to be able to phone out to a landline from the router via the internal sim card. My card allows a set...