Numbering plan
69
System functions and features as of R4.1
syd-0570/1.2 – R4.1 – 08.2016
3. 2. 7 Separate Regional Prefix Category
This regional prefix allocates a PINX to a PISN region.
The PINX compares its own regional prefix entry with the first few digits of the call num-
bers of the following calls:
• All outgoing calls
• All incoming calls routed via a trunk group with the setting Network type = Private
If the first few digits match up with the PINX's own regional prefix, they will be trun-
cated. The remaining number is then analysed and forwarded
3. 2. 8 Shared Numbering Plan
PISN users are structured in the internal numbering plans of the PINX.
From the PINX’s viewpoint its own users are internal users and the users of the other
PINXs are PISN users.
If two or more PINXs are structured in such a way that they split the users’ number
range among themselves, we talk of a shared numbering plan. Together they form a
region, within which all users can be reached under the internal call number.
Fig. 26 Shared numbering plan: two PINXs share the numbers of a numbering plan.
50
200 ...299
400 ...499
50
400 ...499
200 ...299
Internal users
PISN users
Internal users
PISN users
Own prex
Own prex
Shared Numbering Plan
Numbering plan PINX 2
Numbering plan PINX 1
PINX 2PINX 1
Region 50