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Set Up Space Numbering Plan
The Set Up Space numbering plan is designed for businesses that want to assign extension numbers that vary in length (one to four digits). Variable-length extension numbers may be more meaningful or more convenient; 1-, 2-, 3-, and 4-digit numbers can be used in the same system. For example, hotels and motels may want extension numbers to match room numbers, and to assign extensions for services (such as Housekeeping or Room Service) to 1-digit extension numbers.
The figure at the end of this window, shows the numbers automatically assigned by the system when you renumber using the Set Up Space numbering plan. As shown in the figure., the system begins reassigning extension numbers with 7100 and ends with 7299. This makes all numbers beginning with 1 through 6 available for use in renumbering. The new numbers can be from one to four digits long.
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Extensions 0 and 7100 both refer to the same operator position in the Set Up Space Numbering plan. |
The extension numbers (7300-7499) shown for Adjuncts are reserved for TDL and MLX extension jacks. When the extension jack is connected to a 4400-Series telephone, one of these numbers is automatically assigned by the system as a second extension number. When the extension jack is connected to an MLX telephone, one of these extension numbers is automatically assigned by the system to the adjunct connected to the telephone. The adjunct is connected to the telephone either by using an MLX MFM (such as modems, answering machines, or fax machines) or directly (for example, a terminal adapter). The extension number assigned as a second extension number (4400-Series telephone) or to the adjunct (MLX telephone) is the extension number assigned to the 4400-Series or MLX telephone, increased by 200. For example, if the extension number assigned to an MLX telephone is 7125, the extension number for the MFM adjunct on that telephone is 7325. In this example, a call can be made to the telephone by dialing 7125, or to the MFM adjunct by dialing 7325.
Because the 4400-Series telephone uses only one extension number, you can use the automatically assigned second extension number as a phantom extension number for providing coverage.
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