I want to start my own business as a local isp

[nRiTeCh]

Nice info. for starters.

For more into STM info see these.
http://www.valiantcom.com/stm/stm.html
https://en.wikipedia.org/wiki/Synchronous_optical_networking
https://books.google.co.in/books?id...q=Synchronous Transport Module levels&f=false