Telephones Local calls are free from private phones, 1ptca from payphones. Cardphones work with CTM cards, issued by the Macau State Telecommunication Company, on sale in hotels or at the back of the main post office (open 24hr), where you can also make direct calls. Macau phone numbers have no area codes. From outside the territory, dial the normal international access code followed by 853 followed by the number. For calls to Hong Kong, dial tel 01 followed by the eight-digit number.