The regulator will have sweeping powers to order companies to sell assets, revoke concessions and share networks and infrastructure, according to a bill sent to Congress.

It will also be able to force companies to seek approval annually for interconnection and infrastructure-sharing terms, in line with a draft obtained by Reuters last month.

Major market players like billionaire Carlos Slim's phone and internet giant America Movil, his fixed line operator Telmex and TV broadcaster Televisa have been declared dominant by the regulator.

(Reporting by Mexico Newsroom)