This attribute, together with the forceNpiTon attribute, controls
Numbering Plan Identifier (NPI) and Type Of Number (TON)
values to be used by the SigChan component for egress calls (if
applicable).
The combination of NPI and TON values defined by the
defaultNpiTon attribute is used for an egress call whenever:
- the call setup message received from subnet indicates that NPI or
TON information is not supplied or doesn't make sense, or
- attribute forceNpiTon is set to yes
Mapping between values of the defaultNpiTon attribute and
associated combinations of NPI and TON values follows:
casUnknown: NPI=unknown (0) TON=unknown (0)
unknown: NPI=E.164 (1) TON=unknown (0)
international: NPI=E.164 (1) TON=international (1)
national: NPI=E.164 (1) TON=national (2)
subscriber: NPI=E.164 (1) TON=subscriber (4)
p0: NPI=private(9) TON=0
p1: NPI=private(9) TON=1
p2: NPI=private(9) TON=2
p3: NPI=private(9) TON=3
p4: NPI=private(9) TON=4
p5: NPI=private(9) TON=5
p6: NPI=private(9) TON=6
p7: NPI=private(9) TON=7