The Divisional Railway Manager (S&T), Vijayawada, South Central Railway, invites online bids under Tender No. B/SG.Tender Notice/E-12/2026-27 for replacing the old telephone exchange with an Asterisk-based IP PBX system at the GDR-BZA section, BZA exchange, KC, TIAL, BPP, OGL, BPP, NLR, and GDR stations. Eligible vendors must submit digital quotations through ireps.gov.in by August 4, 2026, at 3:30 PM. The estimated contract value is 1,69,86,827 Rupees, with an EMD requirement of 3,39,700 Rupees and a completion period of 9 months.