Programming instructions

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DX-120 Programming Manual BASIC SYSTEM PROGRAMMING TASKS
Customizing the Numbering Plan
The DX-120 system comes with a default directory numbering system already set up for you. If this default system
meets your customer’s needs, you do not need to modify the default numbering scheme. However, if your customer
requires changes to this plan, you can use this feature to do so.
When one extension user calls another extension, the
system uses the settings in the numbering plan to correctly direct the call.
For this reason the numbering plan is often
referred to as the system directory numbers.
EXAMPLE
A customer may tell that he/she wants all extension numbers to begin with a 1; so
that instead of an extension having a designation of "305", it will then have a
designation of "1305".
CAUTION!
If you do customize the numbering plan, you will have to re-program it every
time you perform a cold start. You can make a copy of your custom database
using PCDBA, but you will have to have the copy and your laptop with you on
site each time you perform the cold start.
• In addition to the basic change you can make to extension designations, the DX-120 numbering plan functionality
allows you to easily configure numbering for the various system resources. Resources are defined primarily as
“port” oriented components of the system.
• Although the flexibility of the directory number structure is provided primarily for system port resources, you can
also customize some feature access (e.g., account code, paging groups, and speed dial).
• As you assign codes, the system checks for conflicts with other codes to keep you from improperly programming
resource directory numbers. To successfully implement changes to the default (factory programmed) directory
number plan, the system does not allow you to enter a new code if it is in use elsewhere. You can, however,
reuse that code if you delete it from its other assignment.
• When you are programming system resources, start by specifying the length (from 1-4 digits) of the directory
number the system uses to access the resource. Then assign the specific digits you want to use for the resource.
Use caution when assigning the digits to resources, as you can assign a resource all specified digits (i.e., hunt
group directory numbers begin with any number), or only leading digits (i.e., hunt group directory numbers must
begin with “2”, or “34”, etc.).
• The default settings for all items are shown in the following tables. The valid range for all directory number
lengths is from one to four digits. Valid options for leading fields include any available, non-conflicting directory
number. This means that if you have assigned a directory number to begin with “41”, for example, no other types
of directory numbers can begin with 41.
• There are 2 main tasks associated with setting up the DX-120 numbering plan. Default values in all fields in the
numbering plan have been assigned.
You can use the numbering plan as is with the default values, but you may
need to customize it for your clients’s particular local calling area and needs.
Customizing the Numbering Plan (continued on next page)