Provision of Supply, Installation, Trenching/HDD/Clamping, Laying of Duct, Blowing of OFC through Ducts, Splicing, Testing & Commissioning for OFC replacement between in Thomson road – PHQ - NDRB–Vayu Bhawan– Sena Bhawan-Executive Enclave (CV)– CCS (CV) -NDBH – Thomson road section of RailTel and maintenance of OFC for 5 years