Making Connections

• HGC ?• PCCW ?• HKBN ?• I-CABLE ?• 56K ?• Broadband ?

• Internet Service Provider (ISP)

• Hardware and Software Requirement

• Internet Service Provider (ISP)– a company

– provide access to the internet• For dial-up

– using username– and password– access phone number

• For broadband– using direct connection

Internet Backbone

Home School Corporate Organization

ISP (1) ISP (2) …...

NSP (1) NSP (2) …... …...

ISP = Internet Service Providers (ISPs)NSP = Network Service Providers (NSPs)

• Hardware and software Requirement– Hardware

• modem– convert digital signals (computer) to analogue

signal (travel over the telephone line)

» and vice versa

– Type : internal / external

• telephone line– medium for transmission of signal

• NIC• Network Cable

– Software• communication software package for esta

blishing the connection• network setting for some broadband servic

es• Browser for viewing web page

– IE, netscape ...

• Email program for sending and receiving email

– outlook, netscape messenger, eudora ...