25.9 Numbering Plans and Type of Number
The IP-to-Tel destination or source number manipulation tables allow you to classify
numbers by their Numbering Plan Indication (NPI) and Type of Number (TON). The device
supports all NPI/TON classifications used in the ETSI ISDN variant, as shown in the table
below:
NPI/TON Values for ETSI ISDN Variant
NPI TON Description
Unknown [0] Unknown [0]
about the numbering plan.
E.164 Public
[1]
Unknown [0] A public number in E.164 format, but no information
on what kind of E.164 number.
International [1] A public number in complete international E.164
format, e.g., 16135551234.
National [2] A public number in complete national E.164 format,
e.g., 6135551234.
Network Specific [3] The type of number "network specific number" is
used to indicate administration / service number
specific to the serving network, e.g., used to access
an operator.
Subscriber [4] A public number in complete E.164 format
representing a local subscriber, e.g., 5551234.
Abbreviated [6] The support of this code is network dependent. The
number provided in this information element
presents a shorthand representation of the complete
number in the specified numbering plan as
supported by the network.
Private [9] Unknown [0] A private number, but with no further information
about the numbering plan.
Level 2 Regional [1]
Level 1 Regional [2] A private number with a location, e.g., 3932200.
PISN Specific [3]
Level 0 Regional (local) [4] A private local extension number, e.g., 2200.
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