Many recruiters and HR people will screen all the submitted resumes and a very standard practice is to conduct 10-20 min telephone screening interviews. These often come unexpected and will be the first impression that you make to the employer -- so you better be ready.
If your resume is out in the job market anytime your phone rings could be a potential employer, so you better be ready. If you don't have an answering machine they may not try again. If your message sounds unprofessional - your first impression is made and they may not call again. If someone answers the phone and can't speak English, or help them - they will likely not call again. they often won't call back, because there are other options. The exception would be if you're being specifically targetting by them.
If you pass the screening call, it wouldn't be unusual to have a second indepth telephone call -if it's a technical company, it may be via Skype, or web-conference.
Many companies are saving the face-to-face interviews for candidates that are on their short list. They are trying to stream-line the process through telephone calls and only see top talent face-to-face.
So learn the Canadian marketplace, the rules, protocols of job searching in Canada, as each country has its own methods. You need to adapt to this market and understand the rules and expectations.
See: www. careego.com