TEC certification is necessary for all new Optical Fibre (Single mode) that is to be connected to the public switched telephone network in India. TEC helps telecom service providers in India. Falls under Scheme : GCS, Group : C   TEC Certification for Optical Fibre (Single mode) Covers the following variants –   Optical Fibre – G.652.D Optical Fibre – G.655 Optical Fibre – G.656 Optical Fibre – G.657. A1 Optical Fibre – G.657. A2 Optical Fibre – G.657. B3 Optical Fibre -G.654.D Optical Fibre -G.654.E Complete support in TEC Certificate is given by Eikomp. Eikomp helps in documentation and procedures for obtaining a TEC Certificate.