NOTICE INVITING EXPRESSION OF INTEREST (EOI) FOR SELECTION OF SYSTEM INTEGRATOR OR BACKEND PARTNER FOR SUPPLY, INSTALLATION, TESTING AND COMMISSIONING OF TELECOM EQUIPMENT INCLUDING TRENCHING, LAYING, BLOWING, SPLICING, JOINTING, TERMINATION AND TESTING OF OFC AND QUAD CABLE IN CONNECTION WITH VARIOUS WORKS UNDER DY. CSTE OR CONSTRUCTION OR VADODARA JURISDICTION