Reliance Communication on Tuesday became the first telecom operator to offer mobile services on both CDMA and GSM platforms as it launched it GSM operations across the country.

To begin with, RCom's GSM services would be available in 11,000 towns to be extended to 22,000 in the next few months, ADAG Group Chairman Anil Ambani said in Mumbai

RCom was the first company being awarded dual spectrum ahead of others and it has invested over Rs 10,000 crore to roll out the GSM network in the last 15 months.

Prior to this, RCom was offering GSM based mobile services in eight circles of Eastern states, while its CDMA services were available throughout the country.

Ambani said RCom would look forward to participating in 3G auctions for both GSM and CDMA services, and the company has earmarked up to Rs 4,000 crore as capital expenditure for the high-end mobile services.

The company has also bagged licences to launch GSM services in Sri Lanka and Uganda.