Defining WAN Terms
CPE
Customer Premises Equipment(CPE)
Typically owned by the subscriber and located at the Subscriber's premises
CSU/DSU
Channel Service Unit/Data Service Unit(CSU/DSU) used to connect
DTE(Data Terminal Equipment) to a digital Circuit such as T1/T3 Line
DTE-Source or Destination Device for digital data eg: PCS,Routers,Servers
CSU/DSU pass data to Service Provider via telephone or Coaxial Cable
CSU/DSU Provide Clocking in the circuit
Demarcation Point
Demarc for short
Place where Service provider’s responsibility ends and CPE begins
Device owned and installed by Telcos
If feasible Ethernet Connection can be provided
Local Loop
Central Office(CO)
Toll Network
Optical Fiber Converters
Local loop connects to the cenrtal office
CO is also known as Point of Presense(POP)
Toll network is a trunk Line inside WAN Provide Network
