The revenue of the sector from the same set of services stood at Rs 41,681 crore in July-September last year.
The sector had reported Rs 44,754 crore adjusted gross revenue (amount earned from sale of telecom services only) from access service in April-June 2016.
Incumbent telecom operators have blamed free services of new entrant Reliance Jio for the decline in their quarterly numbers.
It was in July when Reliance Jio started expansion of its free 4G services bundled with LYF handsets in trial phase. The company in mid-July claimed to have 1.5 million subscribers during the trial phase. Jio launched its service commercially on September 5 and became first company to clock 100 million subscribers in just 170 days of its launch.
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Telecom operators pay government licence fee and other charges based on their adjusted gross revenue (AGR).
"The license fee declined to Rs 3,698 crore for the December quarter from Rs 4,091 crore in the July-September period of 2016," the report said.
The AGR from all telecom services fell by 9.17 per cent on quarterly basis to Rs 45,905 crore in October-December from Rs 50,539 crore in the July-September period.
"Access services contributed 81.22 per cent of the total adjusted gross revenue of telecom services. In access services, gross revenue, adjusted gross revenue(AGR), license fee and spectrum usage charges (SUC) declined by 8.09 per cent, 10.55 per cent, 10.92 per cent and 12.29 per cent respectively," the report said.