TORONTO - A Canadian telecom giant is asking the national regulator to call one of its competitors offside, saying it has been unfairly blocked from advertising on the other company's media platforms.

It's a battle between Telus Corp. and Rogers Communications Inc. that also extends to the ice, with the former alleging that Rogers has used its position as Canada's dominant TV rightsholder for NHL games to interfere with Telus' long-standing sponsorship of the Calgary Flames.

The issue was outlined in a complaint filed by Telus in June and posted to the CRTC's website Tuesday. It alleges Rogers has been engaging in "anticompetitive behaviour" that violates regulatory rules.

Rogers disputes that characterization, however, saying Telus' advertisements aim to harm its reputation and therefo

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