Which Wide Area Service Is Appropriate?
Technical Characteristics of WAN Services
Wide area networks provide the communications pathway between dispersed geographic sites in a corporate network infrastructure. Service providers offer several long-range technologies for IP transmission. Each IP-enabled service can be deployed for SAP connectivity. There are three major categories of wide area services. First, there are leased lines, which are dedicated, permanent circuits going from point to point. Then there are packet-switched technologies, such as X.25, Frame Relay, and ATM—they act like permanent links but are actually shared links. Finally, there are circuit switch technologies, which are also known as dial-up connections. These are provided ...
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