The Plan established new service standards, including digital service for multi-line telephone instruments. In the analog environment the signal loses some of its power as it travels over cables. The loss is compensated by amplifiers which also amplify any noise on the line. The digital signal allows speech to be synthesized and recognized while noise and echoes are canceled. Digital signals are regenerated instead of amplified.
Hybrid telephones use a combination of digital and analog technology.
The sets can have one or more calls appearing simultaneously on the telephone. South Campus and other off-campus locations are served by Southern Bell lines. Services required, and 4. A memorandum will be sent to verify receipt of the IR and provide the TSR number.