Ya... My mum just landed in Vancouver and I really needed to call her cell phone ... I was very pissed off for the phone line delaying without a reason (probably is checking my background). After a few times of attempts, I think they verified me and put me through quietly... After I called my mum, I called another person living in mainland China; they didn't spend too much time on delaying (about extra 30 seconds) and let me go through.