• ISDN(INTEGRATED SERVICE DIGITAL NETWORK)

- also transfer data over ordinary telephone lines
- Typically uses two phone lines to transfer data
- ISDN requires a special ISDN modem

- Characteristics of ISDN:
 * 1.Faster, but pricey
 * 2.Doesn’t tie up phone line
  3.*Used by businesses and individuals



Direct Connection / Broadband Internet Connection : 
(always on connections)

1. Many home and small business users connect to the Internet via high-speed broadband Internet service
2. PC is continually connected to the Internet
3. Direct connections are typically broadband
4. Used in the home and office
5. Because you are always connected, it is important to protect your computer from hackers

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