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Trai mandates minimum call ringer duration of 30 seconds
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Trai mandates minimum call ringer duration of 30 seconds
https://economictimes.indiatimes.com/industry/t...
TRAI fixes ring timings for mobiles, landlines
Trai mandates minimum call ringer duration of 30 seconds
https://economictimes.indiatimes.com/industry/t...
TRAI fixes ring timings for mobiles, landlines