Primus pumps its call-filtering service

TORONTO – Primus was quick to tout its free telephone spam filtering service, just days after the CRTC told telcos that they must help Canadian customers to stave off unwanted telemarketing calls.Primus said Friday that Telemarketing Guard, which is included with its home phone service, works at the network level to identify and intercept suspected telemarketing calls before the phone rings. In the default mode, the intercepted caller will have to Press '1' - similar to a 'captcha' - before the call can proceed, which it claims results in many telemarketers and robocalls just hanging up.Customers may also select from...