Working restricted area

Question

I am in Canada tring to make work my T7100 and it dont whant to transmitt and receive voice. TEST A:Any chanels (1 or 14 or 22) using Interference Eliminator Code 0: I press "pit":no noise, i talk: noise reception in the other radio.Call tone is received.TEST BAny chanel (1 or 14 or 22) using Interference Eliminator Code 1 to 38: I press "pit":no noise, i talk: no voice and no noise reception in the other radio. Call tone is not received.I bought them in Virginia Usa and they where working at that moment. Are they built to work in any area?