Cybotech campus
Network problem

I HAVE A USB MODEM OF AIRTEL. THIS DEVICE IS NOT WORKING PROPERLY IN (NEHRU NAGAR, PATNA).

THAT DEVICE IS TAKING ABOUT 20 MINUTES CONNECTING WITH INTERNET.

ALSO ITS SPEED IS NOT CONSTANT VARY IMEDITELY 2 KKPS AND AFTER 25 KBPS.

WHY NOT PLAYING ON LINE VIDEO WHOSE PLAYING SPEED IS (56 KBPS & 128KBPS).

IN PATNA ITS WORK WITH "EDGE" BUT IN CHHAPARA IT WORK WITH "GPRS" WHY?