Since Buddhism denies the existence of a separate self, as explicated in the teachings of anatman and sunyata, self-realization is a contradictio in terminis for Buddhism.
If you are calling from other country than Thailand to the Bangkok area, dial IDD of your country, then international phone number (country code) +66, after that phone area code of Bangkok 2 and call number. +66 - 2 (Telephone number).
This page details Thailand phone code. The Thailand country code 66 will allow you to call Thailand from another country. Thailand telephone code 66 is dialed after the IDD. Thailand international dialing 66 is followed by an area code. The Thailand area code table below shows the various city codes for Thailand.