Which telecom operator unveils the internet telephony service 'Wings'?

Bharat Sanchar Nigam Ltd (BSNL) will roll out its new internet telephony service with brand name "Wings" from August 1. Those subscribing to "Wings", entailing one-time registration fee of Rs 1,099, will be able to make calls using any internet connection including broadband, WiFi, 3G or 4G data network of any operator, thus overcoming connectivity problems even in areas having patchy signals. Those subscribers can avail free domestic calls for one year, while the overseas calls will be priced as per international tariffs of BSNL landline.