four of the eight types of communication system
:
group-1 : Line\radio communication system
group-2 : simplex\duplex communication system
group-3 : analog\digital communication system
group-4 : baseband\carrier communication system
example1 : TV - communication system describe as radio - simplex - analog - carrier communication system .
example2 : landline telephony is described as Line - duplex - analog - baseband communication system .
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