The issue of spectrum saw new twist when RCOM gave legal notice to Department of Telecommunication ie. DOT .

According to RCOM, the DoT should follow the method recommended by the Telecom Engineering Centre, which is more stringent than that of TRAI's.

TEC recommended raising the subscriber base by up to 15 times against TRAI's six times.

'Rejecting the TEC norms and accepting TRAI norms is arbitrary and illegal and is also contrary to the earlier decision of the DoT to accept the TEC report,' the legal notice stated.

The Anil Ambani-promoted company also reiterated its demand that excess spectrum held by the GSM players be returned at the earliest.

'The DoT should also charge extra fees for the excess spectrum from the date of issue of the spectrum to the date of return of the same,' it added.

The company Thursday had also accused the DoT of 'succumbing to private GSM operators' pressure tactics.'