Call from Belarus to Russia from home to home:
8 10 7 495 123-45-67
8 – long distance exit, 10 – international exit, 7 – Russian code, 495 – Russian city code, 123 45 67 – phone number.
Call from Belarus to Russia from home phone to mobile:
8~10 7 903-123-45-67
8~10 — access to international communication, 7 — Russian code.