On its “Foreign Projects” page, IRCON lists a project with Iranian Islamic Republic Railways.
On its Company Website, IRCON states that it has “executed a large number of Electronic (Solid State) Interlocking and Relay based Interlocking Signalling installations” in countries including Iran. (Company Website, “Signaling and Telecom")
“Last year, Washington had eased sanctions on Iran, which has enabled Indian companies to explore investment options. The Indian commerce ministry officials had in December last year, met the top brass of SAIL, BHEL and railway infrastructure builder IRCON to consider investing in Iran.” (Trend, “Iran plans to import 200,000 tons of rail tracks from India,” 4/28/14)
In its Annual 2009-10 report, IRCON lists Iran as among those countries where “Concerted efforts are being made to secure contracts.” (Company Website, “Annual Report, 2009-10”)