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In seven-digit dialing, callers dial the three-digit central office code and the four-digit station number of the destination telephone if it resides in the same numbering plan area. Dialing of an area code before the telephone number, referred to as ten-digit dialing, was only necessary for foreign NPA (FNPA) calls.
The overlay method requires that the area code must be dialed in all cases, even for local calls, while the split plan may permit seven-digit dialing within the same area. The transition to ten-digit dialing typically starts with a permissive dialing phase, which is widely publicized, during which dialing all ten digits is optional.
A 9 would be inserted as the new second digit of all area codes (e.g. 212 would become 2912, 916 would become 9916). Permissive dialing would be allowed because exchange equipment, on detecting a 9 as the second digit of the area code, would respond appropriately to expect 11 digits, or 10 in the absence of a 9 in that position.
5. Enter your area code. 6. Click Next. 7. Choose whether to dial 1 and/or 1 + Area Code. Note: Many areas now require 10 digit dialing, and in some cases 1 + Area Code may be required as well. Contact your local telephone company for more information.
Jul. 29—In preparation for the new 924 area code, all customers located within the 507 area code region should prepare for 10-digit dialing. According to a release from the Minnesota Public ...
Oct. 24—Anyone needing a visual aid for why it's necessary to tack on a three-digit area code for calls in Eastern Washington on Sunday would do well to take a trip to the Spokane Valley ...
Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as country dial-in codes, or historically international subscriber dialing (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.
Feb. 25—ROCKINGHAM — Some Richmond County residents have noticed that they are being required to enter the 910 area code to make a phone call, prompting concern that an impending change to the ...
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