Transit providers in Sri Lanka

Greetings all,

  We've been asked to look at building an ISP in Sri Lanka and I
wanted to know if anyone had any of the following:

  - Transit providers in Colombo
  - Types of handoff's common in this location (Ethernet, ATM, etc)
  - Expected US$/mb of flat-rate traffic
  - Datacentres in Sri Lanka - secure and protected

Thanking you in advance for your advice.