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direct distance dialling (DDD)

The older term self-dialing long-distance service (SWFD) refers to public telephone service over the public switched telephone network in which a connection is made by entering the number directly on the telephone. The term self-dialing long distance service dates back to the days of hand-switched or semi-automatic call transfer. With this telephone service, the dialing subscriber can establish any connections with other subscribers of another carrier, this also applies to international connections.

Englisch: direct distance dialling - DDD
Updated at: 08.11.2020
#Words: 72
Links: service, telephone, telephone network, connection, carrier
Translations: DE

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