However, you have to be absolutely certain of the source of the telemarketer call before doing this. If there is any doubt, then the call rule doesn't get created.
I've found this to be effective as well for annoying calls from charitable organization remote offices and political parties looking for donations as well as research company polling.
You see, this is the opposite of how I feel, I could care less about charitable organizations, politicians, blood and clothing donation people calling me, these people are NOT the ones the majority of canadians are complaining about. The Canadians are complaining about the ILLEGAL telemarketing calls from Duct cleaning, from windows, from anti-virus, and from scammers pretending to be Canada Revenue Agency.
First we need to understand the issue at hand, the do not call list WORKS, Works for people who abide by the rules, but scammers in india and pakistan do not abide by the rules and disguise/spoof their number to something invalid which does not comply with NANP (north america numbering plan
Have you ever got a call from 000-000-0000? or from a weird number like 0063 or 1-111-111-1111? yes these are the calls the crtc wants phone companies to block, if u read the report, shaw implemented something similar before the crtc even mandated such requirement and had a 95% reduction in calls. so yes it works
also ive gotten a call from +416-xxx-xxxx and i can already tell its a scam, if it was a real call the display would show +1-416-xxx-xxxx which is the proper nanp. +416 is not a country code, but +1 is, so yes it would dramatically reduce calls from those scammers.