User:Ehjelle/Books/test

DSL
 * Internet
 * Asymmetric Digital Subscriber Line
 * ITU G.992.5
 * Single-pair high-speed digital subscriber line
 * Symmetric digital subscriber line
 * Very-high-bitrate digital subscriber line
 * Very high speed digital subscriber line 2

FTTx
 * Fiber-optic communication
 * CWDM