Select the correct statement(s) regarding the components of a basic cellular systems (e.g., GSM).

a. all base stations and/or base station controllers are connected to the cellular systems mobile switch which facilitates mobile handoffs between cells, and connectivity to external terrestrial networks such as the PSTN and Internet

b. base stations are directly connected to one another through wireless broadband trunks

c. each base station is equipped with a switch that enables connection to external networks such as the PSTN and Internet

d. All statement(s) are correct

		Femtocells operate on wireless IEEE 802.11 ISM frequencies. True False With 4G cellular systems, each cell can use all available system frequency channels as long as ICIC interference coordination is implemented between adjacent cells. True False