DSL - Digital Subscriber Lines
DSL. DSL - Digital Subscriber Line is a newer technology than ISDN. It was developed as an add on service over existing copper wire lines. Some of the major characteristics of DSL are given in the following list:
- It offers speeds up to and exceeding those of T-1 lines at a fraction of the cost.
- In many areas it costs less than ISDN.
- It provides an always on link.
- Both voice and data can be transmitted over the same line simultaneously.
- You must be within a certain distance of a central office in order to get DSL service if your phone company provides it.
