It served as the regulator for the independent companies until April 26, 1994, when a decision by the Supreme Court of Canada in the case Téléphone Guevremont Inc. v. Quebec (Régie des télécommunications), (1994) 1 S.C.R.
The regulatory authority for independent companies until April 26, 1994, when a Supreme Court of Canada ruling in the case Téléphone Guevremont Inc. v. Quebec (Régie des télécommunications), (1994) 1 S.C.R., came into effect.