The strong earnings lifted SLTs six months' figures, with net profits up 67 percent to 2.30 billion rupees over 29 percent sales growth of 19.56 billion rupees.
During the second quarter, SLT initiated a voluntary retirement scheme which cost the company 425 million rupees.
SLTs earnings are being lifted by the wireless CDMA services introduced last November.
The telco's CDMA (Code Division Multiple Access) service runs on a wireless network offering a range of services like faster internet/email connectivity and the mobility to move the handset anywhere, just like a cellular phone.
SLTs current CDMA subscriber base is expected to cross 200,000 users by end-December.
A joint venture with India's Bharat Sanchar Nigam Ltd (BSNL) to route the company’s international