Dual technology telecom operator, Tata Docomo, the flagship brand for Tata Teleservices (TTL) has surrendered its excess CDMA Spectrum in 15 telecom circles out of 19 circles due to huge losses amid intense competition or less scope in CDMA services. Tata Teleservices (TTL) which is country’s sixth largest telecom operator in terms of subscribers (including both CDMA and GSM) had told the Department...