NEW DELHI: The S&P BSE Telecom index was trading 0.52 per cent up at 1,658 around 12:55 pm (IST), backed by gains in shares of Aksh Optifibre (up 4.97 per cent), Sterlite Technologies (up 4.09 per cent), Himachal Futuristic Communications (up 3.89 per cent) and OnMobile Global (up 2.37 per cent).

Shares of GTL (up 1.12 per cent), Tejas Networks (up 1.04 per cent), Vindhya Telelinks (up 0.83 per cent), ITI (up 0.60 per cent), Idea Cellular (up 0.39 per cent), Bharti Airtel (up 0.30 per cent), Mahanagar Telephone Nigam (up 0.17 per cent) and Bharti Infratel (up 0.16 per cent) were also among the gainers.

However, Reliance Communications (down 3.76 per cent), GTL Infrastructure (down 1.13 per cent) and Tata Teleservices (Maharashtra) (down 0.14 per cent) were trading down in the telecom index around that time.

Benchmark NSE Nifty50 index was 30 points up at 10,473, while the BSE Sensex was up 105 points at 33,898.

Among the 50 stocks in the Nifty50 index, 25 were trading in the green, while 22 were in the red. Three stocks were appearing unchanged.

Tata Steel, Larsen & Toubro, Dr Reddy's Labs and Coal India were among the top gainers in the Sensex index.

On the other hand, Sun Pharma, Tata Motors, Wipro and Hero MotoCorp were among the laggards in the Sensex index.