Cover Letters Physical Therapy Aide Any Tips On Cold-calling Employers?

Any tips on cold-calling employers? - cover letters physical therapy aide

I am currently looking for work and leave my world is a niche, so I think I will have the employer that, with orifices, adequate and appropriate seldom advertised deal.
All books in search of employment to inform you that there is the most effective method is to call the employer to cold or at least someone on the phone.

Somehow I am not convinced that the way forward. Maybe it works, if you are effectively looking for a job as a waiter or a seller, but how can for most professional positions? They can not even past the security, let alone the reception in office buildings, where large financial companies, consulting. If you refer any question to his secretary decent purposes. At my last employer, which were constantly on the lookout for work considered to be harmful.

So the other variants, the person directly send e-mail or a physical letter + CV. Is that correct? If so, it is more effective?