Long time ago, when we call to
foreign country, it was not necessary to know the country code. There
were three ways, station-to-station call, collect call, and person-to-person
call. We call to local telephone company first and simply say "I would
like to make an international telephone call to Japan. The destination
number is Tokyo, 3-xxxx-xxxx. Please make it a station-to-station call."
International Telephone Prefix Code
When you call to people who are living in a foreign country, you should know
the source country code and the destination country code.
The number enclosed by parenthesis is used as a prefix of a domestic long
distance call. Don't dial it.