.: Corning Cable SystemsThe future proof solution wagner_1_1100 Pattern for other protocolls • 1000BASE-T on 4 pairs is bound to use the signalling pairs (part of the 802.3af objectives) • ATM, Token Ring, IEEE 1394, FDDI TP-PMD, PBX and other may follow suit easily 13Slide Nr.: Corning Cable SystemsThe future proof solution wagner_1_1100 Signal Pairs 1,2 – 3,6 Idle Pairs 4,5 – 7,8 Technical feasibility Economical feasibility Whenever pairs present and not used by 3rd party Compliant with ISO/IEC 11801 Standard worldwide NO Liaison Letter proper consideration of NO Easy to implement for 1000BASE-T NO Futureproof NO Appliable to installed cabling park 100 % < 70 % Exploitation of park beyond ICO/IEC 11801 NO End system Win - End user Win loose 14Slide Nr.: Corning Cable SystemsThe future proof solution wagner_1_1100 CONCLUSION To provide power via the MDI The Signal pairs 1-2 , 3-6 are the optimal solution for the largest market segment.