Version 5.2 117 September 2007
SIP User's Manual 5. Web-based Management
The gateway matches the rules starting at the top of the table (i.e., top rules take
precedence over lower rules). For this reason, enter more specific rules above more
generic rules. For example, if you enter 551 in entry 1 and 55 in entry 2, the gateway
applies rule 1 to numbers that starts with 551 and applies rule 2 to numbers that start with
550, 552, 553, 554, 555, 556, 557, 558 and 559. However if you enter 55 in entry 1 and
551 in entry 2, the gateway applies rule 1 to all numbers that start with 55 including
numbers that start with 551.
5.5.3.2 Numbering Plans and Type of Number
Numbers are classified by their Numbering Plan Indication (NPI) and their Type of Number
(TON). The gateway supports all NPI/TON classifications used in the standard. The list of
ISDN ETSI NPI/TON values is shown in the following table:
Table 5-17: NPI/TON Values for ISDN ETSI
NPI TON Description
Unknown [0] Unknown [0] A valid classification, but one that has no information
about the numbering plan.
Unknown [0]
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. For example: 16135551234
National [2] A public number in complete national E.164 format.
For example: 6135551234
E.164 Public [1]
Subscriber [4] A public number in complete E.164 format
representing a local subscriber. For example: 5551234
Unknown [0]
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. For example:
3932200
PISN Specific [3]
Private [9]
Level 0 Regional (local) [4] A private local extension number. For example: 2200
For NI-2 and DMS-100 ISDN variants, the valid combinations of TON and NPI for calling
and called numbers are (Plan/Type):
îš„ 0/0 - Unknown/Unknown
îš„ 1/1 - International number in ISDN/Telephony numbering plan
îš„ 1/2 - National number in ISDN/Telephony numbering plan
îš„ 1/4 - Subscriber (local) number in ISDN/Telephony numbering plan
îš„ 9/4 - Subscriber (local) number in Private numbering plan
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