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1 High Level Telecom Architecture MDFMDF SAI Central Office (CO) “home run” copper connects customers directly to CO No Batteries in outside plant … phone.

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Presentation on theme: "1 High Level Telecom Architecture MDFMDF SAI Central Office (CO) “home run” copper connects customers directly to CO No Batteries in outside plant … phone."— Presentation transcript:

1 1 High Level Telecom Architecture MDFMDF SAI Central Office (CO) “home run” copper connects customers directly to CO No Batteries in outside plant … phone “just works” Lots of great copper … it must be protected! Home Run Copper Central Office Batteries & Generators DS1 RRR MUX DS1 Digital Loop Carrier (DLC) Housed in Remote Terminal (RT) outside plant cabinets AC power with battery backup & generator hook-up SONET RT Site MUX DLC DS1 SAI Home Run Copper Batteries Class 5 Switch ONT Shared Fiber SAI Fiber To The Home (FTTH) Shared fiber Optical Network Terminal (ONT) converts light to analog voice and Ethernet data Consumer responsible for battery What if consumers don’t want fiber? OLTGateway Passive Optical Splitter Home Run Copper Battery

2 2 Outside Plant Cable Topology - DLC Remote Terminal Feeder (F1 Cable) F2 Buried Cable SAI/FDI F2 Aerial Cable F1/F2 x-connect From Central Office DLC F1 Cable to CO is being retired as we speak Losing Feeder cable to SAI cuts-off direct access to customers from Central Office Batteries Drop to House

3 3 Outside Plant Cable Topology - FTTH Feeder (F1 Cable) SAI/FDI F2 Aerial Cable F1/F2 x-connect When this copper is retired, it is essentially gone Bandwidth is good … but allowing this copper to disappear is wrong and dangerous Drop to House (aerial or buried) Passive Fiber Splitter To Central Office Copper and Fiber Must Both be Maintained as part of “One Network”

4 4 Key Take Aways ▪Fiber and Copper together provide best of all worlds –Bandwidth –Ubiquity –Reliability ▪All maintenance systems must be kept in operation –All “one network” with different last mile technologies ▪“Feeder” copper is already being retired ▪What is going to happen to your feeder and drop with FTTH? –Already being removed for “aesthetic” reasons! Provision of Broadband must not negate National Security and Emergency Preparedness


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