SEMESTER 4
Accessing the WAN
Chapter 1
Example :
CPE (Customer Premises Equipment) -> Customer's Responsibility
SPE (Service Provider Equipment) -> Provider's Responsibility
Modem as DCE (Data Circuit Equipment) give bandwidth and clocking
Router as DTE (Data Terminal Equipment)
CO Switch (Central Office) contains L3 device, etc.
Demarcation Point is separation point between customer and provider responsibility (usually at modem)
WAN Devices
Example :
CPE (Customer Premises Equipment) -> Customer's Responsibility
SPE (Service Provider Equipment) -> Provider's Responsibility
Modem as DCE (Data Circuit Equipment) give bandwidth and clocking
Router as DTE (Data Terminal Equipment)
CO Switch (Central Office) contains L3 device, etc.
Demarcation Point is separation point between customer and provider responsibility (usually at modem)
WAN Devices
- Analog - Digital
- Dial-up modem : telkomnet instan (dial and connect)
- DSL modem : speedy
- Cable modem : fastnet (coaxial)
- Digital - Digital
- CSU / DSU (Channel Service Unit / Data Service Unit) : Digital Device that connecting DTE to other Digital Circuit (T1/T3 Line) and running at layer 1 OSI
- Pure modem : telkomnet instan's modem, bridging provider to user
Data Link Protocol :
- Circuit Switching : establish connection before transmission, used track cannot be used, one track one connection. example : home telephone (PSTN), telkomnet instan(ISDN)
- Packet Switching :
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