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| Definition | : | Subscriber Trunk Dialling |
| Category | : | Technology » Communication |
| Country/ Region |
: | United Kingdom
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| Popularity | : |
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Subscriber trunk dialling (STD, also known as subscriber toll dialling) is a term for a telephone system allowing subscribers to dial trunk calls without operator assistance. It is used in other countries such as the Republic of Ireland, Australia and India.
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Sexually Transmitted Disease
Diseases & Conditions
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The full form of STD is Subscriber Trunk Dialling