Tender For design, engineering, supply of ip based video surveillance system (vss) and retro-fitment & integrated testing of the same in in-service rolling stock (icf and lhb, type of coaches) as per rdso specification no. rdso specification no. rdso/spn/tc/106/2025 ver.3.1 and rdso lr.no. mc/mk-2 dt.30.06.2025 over southern railway at various locations and additional technical instructions and special conditions (annexure - a).training,security auditing by stqc, warranty, preventive maintenance during warranty period and comprehensive annual maintenance contract (camc) post-warranty is also in the scope of the contract.