OUR STAFF REPORTER LAHORE PTCL has revised call rates to 20 countries with 30 seconds billing. The customers can call these destinations at rate of Rs 1.25 per 30 second. The earlier rates were Rs two plus tax. According to the PTCL, the offer is valid for both mobile and landlines in selected countries and it became effective from August 1. The countries where the landline rates are applicable are: Australia, Belgium, Canada, China, Cyprus, France, Germany, Greece, Hong Kong, Italy, Japan, Malaysia, Netherlands, Norway, South Korea, Spain, Sweden, Taiwan, UK and USA .