Meerut Police have busted an illegal international telephone exchange operating from a house, which was allegedly being used to convert international VoIP (Voice over Internet Protocol) calls into local voice calls, causing significant revenue losses to the Indian Government, officials said on Friday.

Four men have been arrested, while three others are absconding. Over 200 SIM cards, SIM (Subscriber Identity Module) boxes, and other communication equipment were allegedly recovered from the accused, police said.