| This would bring into direct competition with Reliance Infocomm, the CDMA-technology-based mobile service company run by brother Mukesh Ambani. |
| GSM mobile phone users in Kolkata have been receiving the signal from the Reliance network for some time now at many locations in the city. |
| Telecom sector sources said RTL was setting up infrastructure for launch of its service and had given 750 connections for test operations. |
| Reliance acquired the Kolkata city GSM licence in 2001 through a company called Reliance Internet Services but had not tried to introduce the service in the city till now. |
| It had allowed Reliance Infocomm, a later entrant, to introduce its CDMA-based service in Kolkata with a bang in 2003. |
| An RTL official admitted the company had started working in the city but refused to divulge anything further. |
| "I do not know anything about operations," the official said. |
| Telecom sources said RTL had already set up 175 base stations in the city a proper network in Kolkata would require at least 265 base stations as it was the largest city circle in the country spread over 2000 sq km. |
| "Reliance is now installing GSM base stations in Kolkata, most being near Reliance Infocomm sites," said sources. |
| The Reliance GSM network would require investment of around Rs 80-90 crore for infrastructure. |
| Sources indicated around Rs 60 crore had already been invested in infrastructure. |
| "Reliance GSM is doing test runs in some areas for a launch in 2-3 months," sources said. |
| At present, Kolkata had three GSM operators "" Bharti, Hutchison Telecom and BSNL. |
| "Reliance is building a solid GSM infrastructure backbone and so it is concentrating on test runs," added sources. |
| The Reliance GSM business in the West Bengal circle excluding Kolkata had customer base of 1.50 lakh or so. |
| Kolkata has a GSM subscriber base of around 15 lakh. |


