Cell Relay Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Re: ATM distance standard
Mike Granger wrote: > > I need to know what the cabling distance standards are for ATM, > specifically for OC3/155Mbit speed. I want to know for both CAT5, as > well as SM and MM fiber. I am going to be implementing ATM on my server > backbone, and will probably have all three types of connections. I know > I won't have an issue with fiber distance, but do want to know how close > I might come to the CAT5 standard. > Also, if you could please tell me where I might find these standards on > the internet? Thank you. > > -- > > Michael Granger > University of Colorado > University Management Systems > Network/Datacomm Specialist > (303)492-9966 > email: mike.granger@cusys.edu The UTP-5 distance is 100 meters. The specification is af-phy-0015.000. The 100 meters is divided into 90 meters of cable, 10 meters of flexible cords, and four connectors. A 155.52 Mb/s physical layer using UTP-3 (100 meters) specification is also available, af-phy-0047.000. These specifications can be found at the ATM Forum http://www.atmforum.com/ For the optical carrier, OC-3, ATM UNI 3.1 references ANSI T1E1.2/94-002R1 for OC-3 SMF and OC-3 MMF physical medium characteristics. Hope the information helps. Paul T. Shultz <paul@csciences.com> |
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