High Level Telecom Architecture

1
High Level Telecom Architecture
Central Office
MDF
Class 5 Switch

• Central Office (CO)
• home run copper connects customers directly to
  CO
• No Batteries in outside plant phone just
  works

SAI
Home Run Copper
Batteries Generators
Lots of great copper it must be protected!
2
Outside Plant Cable Topology - DLC
F2 Aerial Cable
Remote Terminal
SAI/FDI
F1/F2 x-connect
Drop to House
DLC
F2 Buried Cable
Feeder (F1 Cable)
F1 Cable to CO is being retired as we speak
From Central Office
Losing Feeder cable to SAI cuts-off direct access
to customers from Central Office
3
Outside Plant Cable Topology - FTTH
F2 Aerial Cable
SAI/FDI
Drop to House (aerial or buried)
To Central Office
Feeder (F1 Cable)
Bandwidth is good but allowing this copper to
disappear is wrong and dangerous
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