International phone calls can be made quite easily from mid- to upper-level hotels. There is direct dialing to and from more than so countries on five continents. Rates for calling out of the country are normally considerably higher than for calling in so if you expect a long conversation you might save some money by having your party call back if possible. If you can't call from your hotel, go to the General Post Office (GPO) on New Road, or major post offices, and call from special booths for overseas calls
Thailand's mail service is reliable and efficient. Major hotels provide basic postal services on their premises. Bangkok's Central G.P.O. on New Road is open from 8.00 AM to 6.00 PM, Mondays through Fridays, and from 9.00 AM to 1.00 PM on Saturdays, Sundays, and public holidays. Telegrams may be sent at any time of the day or night. Upcountry post offices maintain similar hours, except that they close at 4.30 PM.
Telex and Fax
All better hotels will offer complete telex, telegraph and facsimile ("fax") services. The GPO offers telex service around-the-clock. Numerous private businesses offer such facilities; most often in conjunction with translation services.