ATIS Telecom Glossary
Thursday, December 18, 2014

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direct distance dialing (DDD)
A network-provided service feature in which a call originator may, without operator assistance, call any other user outside the local calling area. Note 1: DDD extends beyond the boundaries of national public telephone networks. Note 2: DDD requires more digits in the number dialed than are required for calling within the local area.

 

 

 

 

 

 

 

 

 

 



 
These definitions were prepared by ATIS Committee PRQC
 
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