The CRTC launched a consultation Thursday requesting comment on new proposals for how its order to telecoms to block some nuisance calls should be implemented. A year ago, the regulator ordered telecoms \u201cto put in place measures to block unwanted nuisance calls on both wireless and wireline networks,\u201d then two months later began consultations to figure out the best way for that to be done. In their responses, companies told the CRTC that the technologies it identified as potential tools to solve the problem have promise but there are barriers to their deployment. In its new consultation, the CRTC said that it is \u201cprepared to take further regulatory measures if do not take adequate steps so that Canadians are protected from receiving blatantly illegitimate calls.\u201d It proposed that the call-blocking be focused on phone numbers that don\u2019t conform to established North American or international numbering plans or those \u201cwhere the calling number is the same as the called telephone number.\u201d However, it won\u2019t include calls where the number is being spoofed to appear local to the person being called, the CRTC said, noting that \u201cthe mechanisms for distinguishing between a legitimate and non-legitimate spoofed number are not sufficiently reliable to protect against the inadvertent blocking of legitimate calls.\u201d Calls where there is no caller information will also be excluded, given that \u201cthat there can be legitimate reasons for omitting caller ID information, for example, to protect the calling party (e.g. calls originating from crisis centres), or as a result of technological limitations (e.g. originating telephone switches that are not compatible with caller ID).\u201d It also proposed giving telecoms nine months from the time that a decision is issued to implement such a system. Interventions are due Dec. 18.