Tata Teleservices (Maharashtra) Ltd posted a net loss of Rs 165 crore for the second quarter ended September 30, compared with a net loss of Rs 183 crore posted during the same period a year ago. The company’s operating profits rose 23 per cent to Rs 136 crore on a year-on-year basis, while revenues rose 6 per cent to Rs 693 crore. The Tata group company is to add another 625 cell sites across its GSM, 3G and CDMA platforms over the next 100 days.