It is also used in international dialing known as the CCITT no.5 system.
Since then, telephone calls between the two countries have required international dialing.
For international dialing, TSPS provided the extra computer power.
Almost at once, noises of international dialing came out of the computer's built-in speakers.
But there are pluses: a fax in each room, for instance, with idiot-proof instructions for international dialing.
Telephone services are efficient with local, trunk and international dialing.
While 10-digit phone numbers for long-distance national dialing originated in 1951, longer phone numbers for international dialing became a reality in 1970.
Calls to Singapore do not require international dialing; calls are made using the 02 access code.
Travelers to the United States and other countries that allow international toll-free dialing would have access to the service.
Even in its current state, Saudi Arabia's communications system is considered relatively advanced in the region, with satellite transmission and international direct dialing from urban areas.