4.4. WAN Technologies

WAN links and long-distance connection technologies can be divided into two primary categories: dedicated and nondedicated lines. A dedicated line (also called a leased line or point-to-point link) is one that is indefinably and continually reserved for use by a specific customer (see Table 4.3). A dedicated line is always on and waiting for traffic to be transmitted over it. The link between the customer's LAN and the dedicated WAN link is always open and established. A dedicated line connects two specific endpoints and only those two endpoints together.

A nondedicated line is one that requires a connection to be established before data transmission can occur. A nondedicated line can be used to connect with any remote ...

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