Review of WAN Design Issues
When designing and provisioning the WAN you want to make sure you
Obviously, there are a lot of other issues to be considered. But these are likely to be the overarching objectives.
Now we present a review of the available WAN technologies along with relevant links to earlier web pages. We will follow Teare's approach with some additions and rearrangement.
Analog Modems. Analog modems operate over PSTN - Public Switched Telephone Networks primarily to
The following link for dial-up service provides some additional perspective.
Leased Lines. Leased lines are used primarily to provide
ISDN. ISDN - Integrated Digital Services Network is one of the higher quality connection alternatives that is generally used to provide
This link for ISDN gives some additional background.
Frame Relay. Frame relay is another approach that is often used to provide relatively cost effective, high speed connection between remote offices. It is usually used in the following ways
For additional information click on frame relay.
X.25. X.25 is often used in the following ways
ATM. ATM - Asynchronous Transfer Mode is typically used in the following applications
For additional information click on ATM.