Numbering Plan Identifiers - ASCOM Ascotel 2025 System Manual

2 Numbering Plan
2
2.1

Numbering Plan Identifiers

The numbering plan is used to analyse numbers and allocate them to an address-
able destination. Two types of numbering plans (Numbering Plan Identification,
NPI) are relevant to the system:
• The public network uses numbering plan identifier E.164, which is defined and
standardized by the ITU-T.
• Private networks use numbering plan identifier PNP (Private Numbering Plan).
The internal numbering plan of a PBX or PINX is also of the PNP type, as is the
private numbering plan supplied by the public network provider.
PINX 3 is a virtual PINX (Centrex)
Fig. 2.1: Numbering plan identifiers in the public network and in the PISN (in PINXs)
Numbers in a numbering plan are analysed with the aid of the Type Of Number
(or TON).
HBT_20321104_02/B0_en
E.164
PINX 3
PNP
haz0675aaxxa0
ascom Ascotel 2025/2045/2065
PINX 1 PINX 2
PNP
PINX 4
PNP
Numbering Plan
PNP
2.3