For the past three years. there has been activity to define a standard optical interface in the ECSA T l X l committee that could be used to connect equipment from different suppliers optically. The first set of specifications for this interface, commonly referred to as SONET (synchronous optical network), has been pubilshed as ANSl standards. In addition. CClTT has finalized the recommendation for SONET and it will be included in this study period's set of recommendatlons. The standard will have a major impact on the next generation network equipment. Much information exists about this standard but it is sometimes hard to obtain or interpret. This tutoria1 explains what the specification is, how it is used and what effect it will have on the network of the future.Rodney Boehm works for Rockwell lnternational as the Director of Market and Product Planning for the Network Transmission Systems Division. He is principally responsible for planning future transmission products. F'reviously. Boehm was a District Manager for Bell Communications Research in Red Bank, NJ. While he was there, he was responsible for generic requirements for digital transmission equipment and was a primary contributor to the synchronous optical network (SONET) project whch evolved into the current activity to develop a standardized optical interface. He has participated in this effort since Its beginning over two years ago. Boehm was also with Bell Telephone Laboratories in North Andover, MA, where he was part of a development team designing digital microwave radio products. He has received B.S. and M.E. degrees in Electrical Engineering from Texas ABM University.(Tutorlal, 60 mln) NOTES
Recently, a standard specifying an optical interface has been completed. This is commonly referred to as the SONET interface specification. In this paper, we will present some of the basics behind the signal and some of the applications of the interface in the telecommunications network.
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