Shares of ITI, Reliance Communications, Aksh Optifibre and GTL were the worst performers in the index. Vodafone Idea, Mahanagar Telephone Nigam, GTL Infrastructure and Tata Communications too were trading with losses. The S&P BSE Telecom index was trading 0.77 per cent down at 1003.05 around 11:55 am. Benchmark NSE Nifty50 index was down 17.55 points at 11,911.20 while the BSE Sensex was down 68.35 points at 39,681.38. Among the 50 stocks in the Nifty index, 20 were trading in the green, while 30 were in the red. Shares of Spicejet, PC Jeweller, Adani Power, Equitas Holdings, PNB, YES Bank, Suzlon Energy, Vodafone Idea, Rail Vikas Nigam and DHFL were among the most traded shares on the NSE.