A satellite phone,routes calls via satellite instead of towers that are land-based.There are two satellite camps used to make calls.Geosynchronous satellites are above a single point on the earth,they orbit up to 20,000 miles from the earth surface.These networks can have a noticeable transmission delay because of the distance of the satellites,and often cover an area that is more limited in latitude than low earth orbit network.
Low-Earth satellites orbit takes over different parts of the earth and they lower ,usually between 400 and 700 miles from the ground. they orbit quickly, taking between 2 to 3 hours to circle the globe. Be low-earth orbit networks require less power to access, satellite phones that connect to these networks are smaller-generally only slightly larger than a standard cell phone. Phones that connect to geosynchronous satellites need more power, and can be larger in size, more comparable to a laptop.
When you make a call, it's transmitted from your phone to the nearest satellite (you often need line-of-sight connections with the satellites, which is why sat phones work best from outdoors), then beamed through your provider's satellite constellation and back down to the person you're trying to call. if you're calling a non-satellite phone, the call is routed through an earth station that patches it into the local telephone network
