System Functions and Features as of I7.9
18
Numbering Plan
sy
d-
020
0/3.
0
– I7.
9
– 1
1
.2009
2. 2
The System's Numbering Plan
The system's internal numbering plan is the numbering plan used for a stand-alone
PBX or a PINX in a private network. The numbers entered in the numbering plan are
used both to dial up call destinations in the PBX and to execute control functions..
Call destinations and functions are grouped into categories.
The internal numbering plan:
•
Assigns number ranges to the categories.
•
Allocates their numbers to call destinations and control functions, making them
obtainable and executable respectively.
As far as the call destination numbers are concerned, the system's numbering plan
is a PNP-type numbering plan.
2. 2. 1
Categories in the Numbering Plan
The allocation of categories to numbers and number ranges can be freely config-
ured, provided a number of rules are observed. Initialization values vary from coun-
try to country.
Rules for an Internal Numbering Plan
Numbers are always interpreted starting from the left..
The various categories must be unequivocally separated through number alloca-
tion.. If, for example, the PC Operator has been allocated number 11, the numbers
11n cannot be allocated to any other categories. If, however, the PC Operator has
been allocated the number 111, the numbers 112 to 119 can be allocated other
categories.
Numbers within a category do not necessarily have to constitute a coherent range;
instead, they can be spread over the entire number range (e.g.: user 200, 404, 550,
551, ...). However, for the purposes of clarity, we recommend that you define coher-
ent ranges.
The number length is variable and can consist of 1 to 12 digits. Numbers with more
than 12 digits will be truncated from the right.
