Central office code protection
In the administration of the North American Numbering Plan, central office code protection was a numbering policy intended to ensure that the same local telephone number was not assigned in both of a pair of adjacent communities on opposite sides of an area code boundary. Its primary purpose was initially to preserve seven-digit dialing of local calls across a common area code boundary in border communities.
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Central office code protection
In the administration of the North American Numbering Plan, central office code protection was a numbering policy intended to ensure that the same local telephone number was not assigned in both of a pair of adjacent communities on opposite sides of an area code boundary. Its primary purpose was initially to preserve seven-digit dialing of local calls across a common area code boundary in border communities.
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In the administration of the N ...... the same geographic location.
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Wikipage page ID
44,742,953
Wikipage revision ID
731,780,344
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In the administration of the N ...... oundary in border communities.
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Central office code protection
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