AudioCodes Mediant 500L User Manual page 564

NPI
Private [9]
International-Level2 Regional
National-Level1 Regional [2]
Subscriber-Level0 Regional
For NI-2 and DMS-100 ISDN variants, the valid combinations of TON and NPI for calling
and called numbers include (Plan/Type):

0/0 - Unknown/Unknown

1/1 - International number in ISDN/Telephony numbering plan

1/2 - National number in ISDN/Telephony numbering plan

1/4 - Subscriber (local) number in ISDN/Telephony numbering plan

9/4 - Subscriber (local) number in Private numbering plan
User's Manual
TON
Unknown [0]
[1]
PISN Specific [3]
[4]
Mediant 500L Gateway & E-SBC
Description
A private number, but with no further information
about the numbering plan.
A private number with a location, e.g., 3932200.
A private local extension number, e.g., 2200.
564 Document #: LTRT-10532