RCom and Aircel have permits for 3G services in 13 out of 22 service areas while Tata Teleservices has permit in 9 circles. "We are delighted to be the first operator to offer 3G national roaming to our customers in partnership with other telecom firms having state-of-the-art 3G networks.

"These alliances will further consolidate RCom's position as the leading data operator in the country and will help the Company improve its post-paid and Corporate customer market share," RCom's Chief Executive Officer for Consumer Business, Gurdeep Singh, said in a statement.

RCom circles comprise Delhi, Mumbai, Kolkata, Punjab, Rajasthan, Madhya Pradesh, West Bengal, Himachal Pradesh, Bihar, Orissa, Assam, North East, Jammu & Kashmir.

With this agreement, RCom gets access to 5 uncommon service areas - Andhra Pradesh, Karnataka, Tamil Nadu, Kerala and UP East where Aircel has presence. Its agreement with TTSL gives it access to Maharashtra, Gujarat, Haryana and UP west.

The partnership gives Aircel and Tata Teleservices access to most expensive service areas of Delhi and Mumbai where RCom has permits.

For the quarter ended 31 December 2013, the RCom had 36.2 million data customers, including 11.1 million 3g customers.

PTI