Aastra Ascotel IntelliGate 2025 - 2 Numbering Plan; 2.1 Numbering Plan Identifiers

Ascotel IntelliGate 2025/2045/2065
Part 2 Numbering Plan 161
2 Numbering Plan
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).
Numbering Plan Identifier E.164
Numbering plan E.164 comprises the following types of number:
PINX 1 PINX 2
E.164
PNP
PNP
PNP
PINX 3
haz0675aaxxa0
PINX 4
PNP