4200 Series

A. How to determine the pre-attenuation (for TX and RX) > more

B. What is a mobile list? > more

C. How to download a mobile list > more

D. How to upload a mobile list > more

E. How to upgrade firmware > more

F. I do not know which option I need to buy > more

G. Can I start with the GPRS Go/NoGo option and upgrade later on? > more

H. I have an old unit, which I want to update to GPRS > more

I. I have a 4201S, can this also be upgraded to GPRS? > more

J. Now I have GPRS in my 4202S installed, but the phone does not perform a GPRS attach > more