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Date: 2014-04-18 16:32:23Telephony Identification Telephone numbering plan Permissive dialing Ten-digit dialing Overlay plan North American Numbering Plan expansion Seven-digit dialing North American Numbering Plan Telephone numbers Numbers | Add to Reading ListSource URL: www.granitenet.comDownload Document from Source WebsiteFile Size: 59,00 KBShare Document on Facebook |