Subscriber Trunk Dialling

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.

Read more about Subscriber Trunk Dialling:  Terminology, Explanation, History

Famous quotes containing the word trunk:

    We are nothing but ceremony; ceremony carries us away, and we leave the substance of things; we hang on to the branches and abandon the trunk and body.
    Michel de Montaigne (1533–1592)