Question

What is a full form of ISD​

Answer 1

Answer:

The full form of ISD is International Subscriber Dialing. ISD is also known as an IDD (International Direct Dialing) is an international telephone call that is dialled directly by a telephone subscriber or an individual, rather than depending on the phone operator.

Explanation:

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Answer 2

Answer:

The full form of ISD is International Subscriber Dialing. ISD is also known as an IDD (International Direct Dialing) is an international telephone call that is dialled directly by a telephone subscriber or an individual, rather than depending on the phone operator.