TEC certification is necessary for all new SGSN or GGSN 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 SGSN or GGSN Covers the following variants –   GGSN SGSN For GSM SGSN For LTE SGSN For WCDMA Complete support in TEC Certificate is given by Eikomp. Eikomp helps in documentation and procedures for obtaining a TEC Certificate.