0 + (7 or 10 digits)

0 + (7 or 10 digits): A feature of the North American Numbering Plan that identifies customer dialed calls that are operator assisted, either by electronic or manual (human) means. [After T1.401-1988]

This HTML version of Telecom Glossary 2K was last generated on Wed May 8 15:36:48 DT 2002.