Telecommunications Essentials

Traditional Internet Applications

Traditional Internet applications are called elastic applications because they can work without guarantees of timely delivery. Because they can stretch in the face of greater delay, they can still perform adequately, even when the network faces increased congestion and degradation in performance. The following are the most widely used elastic applications:

• E-mail— The most widely used of the Internet applications, generating several gigabytes of traffic per month, is e-mail. Because there is a standardized convention for the e-mail address—username@domainname—various companies can interoperate to support electronic messaging.

• Telnet— Telnet is one of the original ARPANET applications. It enables remote login to ...