The Office of the Principal Chief Signal & Telecom Engineer in Mumbai has issued an open tender (No. CR-HQ-SNT-TELE-2026-01) for laying underground 2x48F optical fibre cable systems to support the KAVACH and LTE backbone across five major rail divisions, with a massive project cost valuation of Rs. 455,62,49,668.22. Procurement forms must be filed digitally through the IREPS site portal www.ireps.gov.in.