This perennial best seller is a thorough guide to buying, installing and using T-1 circuits and the often complex equipment that you need to hook into T-1 lines There are four reasons to buy T-1: 1 Major dollar savings on long distance calls and international calls voice, data and video calls 2 Substantially better communications quality T-1 is all озщзй digital 3 Flexibility to reconfigure connections - voice one minute, data the next, video the next 4 Improve network reliability Achieving these fourbenefits can be painful (T-1 expertise is short among telephone companies) and expensive That's where this book comes in It will save you and your company a fortune in mistakes you could have avoided. Для специалистов,ISBN 1578200210.