ISPs employ a range of technologies to enable consumers to connect to their network.
For home users and small businesses, the most popular options include dial-up, DSL (typically Asymmetric Digital Subscriber Line, ADSL), broadband wireless, cable modem, fiber to the premises (FTTH), and Integrated Services Digital Network (ISDN) (typically basic rate interface).
For customers with more demanding requirements, such as medium-to-large businesses, or other ISPs, DSL (often SHDSL or ADSL), Ethernet, Metro Ethernet, Gigabit Ethernet, Frame Relay, ISDN (BRI or PRI), ATM, satellite Internet access and synchronous optical networking (SONET) are more likely to be used.
Typical home user connection
Dial Up
DSL
Broadband wireless access
Cable Internet
FTTH
ISDN
WiFi
Typical business type connection
DSL
SHDSL
Ethernet technologies
source; http://en.wikipedia.org
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