Telecom Regulatory Authority Of India - Subsection
Section 4(2) in The Telecommunication Mobile Number Portability Per Port Transaction Charge and Dipping Charge Regulations, 2009
(2)Each Mobile Number Portability Service provider shall, by an agreement with the Access Provider or International Long Distance Operator, as the case may be, arrive at the Dipping charge within thirty days from the date of publication of these regulations in the Official Gazette.
