OTDR or Optical Time Domain Reflectometer is a necessary tool needed to certify any new or existing fibre network. They will produce a report on the health of your fibre network to show that it is operating as it should. With some of the biggest names in the OTDR market like EXFO, AFL and Psiber. Comtec will be able to help you find an OTDR for you. Also, why not call and speak to one of or reps to arrange a OTDR demonstration or even rental agreements.