The Canadian Radio-television and Telecommunications Commission has ordered Canada's three largest telecoms to justify their contentious fees and explain why they shouldn't face fines for apparent federal violations.

Canada's telecommunications regulator is launching a review to determine if the Big Three providers have violated its new rules banning so-called junk fees.

The Canadian Radio-television and Telecommunications Commission has ordered Canada's three largest telecoms to justify their contentious fees and explain why they shouldn't face…