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Date: 2014-03-04 12:39:02Telephony Communications in North America Ten-digit dialing Telephone numbering plan Overlay plan Permissive dialing Telephone exchange Seven-digit dialing North American Numbering Plan expansion North American Numbering Plan Telephone numbers Numbers | Add to Reading ListSource URL: www.granitenet.comDownload Document from Source WebsiteFile Size: 42,00 KBShare Document on Facebook |