Speed Dialing > Adding Speed Dial Buttons to a Group or Updating Speed Dial Button Information

Include trunk numbers (for example, a 1 or 9 to get an outside line), area codes and exchanges when entering outside numbers. Use any characters you want to format the number - hyphens, parentheses, letters, or periods; these characters are ignored when the number is dialed. For internal numbers, follow your telephone system protocols for extensions or other offices.