From anywhere in the world where there is a fixed-line fixed telephone:

Exit to the intercity - for example, "8" in Russia and most countries of the post-Soviet space;

International connection - «10»;

The code of Belarus is «375»;

The city code is «017» (Minsk), «232» (Gomel), and so on. etc. Or the code of the mobile operator, for example "29";

Phone number - "your numbers."

With mobile it is easier: +375 29 1234567, where: +375 code of Belarus, and 29 mobile code operator, 1234567 - number of the subscriber.

Details about some phone codes in the article about the Belorussian si.