I understand that there are different types of signal:
3G, GRPS, GSM.
BES can work on 3G and GPRS, which are both data connections, providing that the letters are in capital case, which I believe shows a connection to the RIM infrastructure.
Is the connection to the RIM infra solely down to the carrier's network, or is the BES involved here at all? For instance, if Ihad a user for whom the signal was going from 3G to 3g, would this be a carrier issue, RIM issue, or BES issue?