What is full form of ISD?

Posted by Pinki | Updated on

ISD: International Subscriber Dialing

ISD stands for International Subscriber Dialing. International subscriber dialling (ISD) is placing an international telephone call that is dialed directly by a telephone subscriber, rather than by a telephone operator. The term international subscriber dialling was used in the United Kingdom and Australia until the terminology was changed to international direct dialling.  Since the late 20th century, most international calls are dialed directly.


  • Illinois School for the Deaf
  • Indiana School for the Deaf, Indianapolis, Indiana
  • International School of Dakar, Senegal
  • International School Dhaka, Bangladesh
  • International School of Düsseldorf, Germany
  • International School of Dongguan, Guangdong, China
  • International School of Design, Valenciennes, France

Other Full Forms of ISD

  • ISD: International Society of Dermatology
  • ISD: Indiana School for the Deaf
  • ISD: International School of Design
  • ISD: International School Dhaka
  • ISD: Instructional System Design

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