Internet Access Guide : Other Internet Access Methods
There are more types of Internet access that aren't so popular as
DSL or cable Internet. Some are illustrated below.
Satellite Internet Access
In (one-way) Internet access over satellite, a user requests an Internet connection to her
ISP using a
dial-up modem. The request runs over telephone network (PSTN). She
will be granted access if she is a registered subscriber. After
the connection establishment, she can do any Internet activities.
But any content that she wants is delivered through a satellite.
The ISP uses a dish antenna to transmit the Internet content to
a satellite transponder. The satellite transponder retransmits the
received content to the user. She must install a dish
antenna to capture the content and a satellite
receiver (decoder) to tune into the right frequency and translate
the content into standard formats readable on her computer screen.
Picture: (One-Way) Internet Access over Satellite
The satellite only sends downstream Internet traffic, upstream traffic is served by the telephone network.
In two-way Internet access over satellite, both upstream and
downstream Internet traffic is carried over satellite's links
therefore a dial-up modem is not required. The connection
speeds offered by broadband satellite ISPs compete with those of
DSL and cable Internet access. But users reported more glitches
and longer latency, that's because the satellite is positioned far
away from earth and the wireless (microwave) link passes through
several atmospheric layers.
TV and Internet access over satellite are often the only
choice for people living in remote areas, beyond the coverage of DSL or
cable Internet service.
page 2 : Stratellite
page 3 : BPL (Broadband over Power Line)