The anti-caking agent in the table salt may give some fixing action depending on what agent is used. Some table salts contains small amounts of potassium or sodium thiocyanate. This is an express fixer agent. The amount in 150g salt used alone may fix he film in 10-15 minutes, but the salt really hampers the action.
So, no, salt doesn't work as a fixer. Get some ammonium thiosulfate and mix your own fixer. It can be bought on the net and shipped by mail. If you can't get it by mail, there is a great possibility that you cannot get film either. Problem solved. :-)