I have been answering questions on FixYa.com about small office phone systems. Primarily the AT&T and Panasonic 4 line phones. One of the most common issues is integrating the phone with a DSL (Digital Subscriber Line). The phone usually has an intercom problem or lit line when the line is hung up.

The 4 line phone is the workhorse for small offices around the country. This phone is inexpensive, has basic features and reliable. Small offices all over the country use these phones as the simple PBX (Personal Business eXchange) they need to run their business efficiently and inexpensively.