Number Pooling: Increasingly popular tactic for conserving phone numbers. Numbers are returned by all carriers to a central authority, which puts them in a pool, from which carriers receive numbers in lots of 1,000, not 10,000 as was originally done. Smaller lots of numbers reduce their cost and maximize the availability of new numbers to meet public demand.

 

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Number Pooling: Increasingly popular tactic for conserving phone numbers. Numbers are returned by all carriers to a central authority, which puts them in a pool, from which carriers receive numbers in lots . . . View Full Definition

Number Portability: A term used to describe the capability of individuals, businesses and organizations to retain their existing telephone number(s) –– and the same quality of service –– when switching to a new . . . View Full Definition

Ol Number One: A fastball. The term comes from the usual signal that a catcher gives to a pitcher for a fastball, which is pointing the number one down.

Oxidation Number: A convention for representing a charge of an atom embedded within a compound, if the compound were purely ionic. For example, H2O is a covalent compound; if it were ionic, the hydrogens woul . . . View Full Definition