Mitel 430 - Numbering plan

Numbering plan
54
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
3Numbering plan
This Chapter features the different types of internal and external numbering plans
available in the various systems. It explains the differences between internal num-
bering plans for the private network and external numbering plans for the public
network. It tells you what you need to know when creating numbering plans for
each particular network.
3. 1 Numbering Plan Identifiers
The numbering plan is used to analyse numbers and allocate them to an addressable
destination. Two types of numbering plans (Numbering Plan Identification, NPI) are rel-
evant 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 communication server 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)
1)
Fig. 22 Numbering plan identifiers in the public network and in the PISN (in PINXs)
1) depends on the network provider
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