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Description Page 51 of
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ITG Trunk 2.0 ISDN Signaling Link (ISL) Description, Installation and Operation
Figure 10
North American dialing plan — call flow
Flexible Numbering Plan
A Flexible Numbering Plan (FNP) allows the length of Location Codes
(LOCs) to vary from node to node. As well, the total number of digits dialed
to reach a station can vary from station to station. It also allows flexibility for
the length of the location codes from node to node. An FNP can be used to
support country-specific dialing plans. FNP also allows users to dial numbers
of varying lengths to terminate at a destination. Flexibility of the number of
digits which can be dialed is achieved using Special Numbers (SPNs).
Electronic Switched Network (ESN) Network Signaling
ITG Trunk 2.0 supports ESN5 Network Signaling protocol only, in addition
to standard (i.e., non-network) signaling. ITG 2.0 supports a mixed network
consisting of ESN5 and standard network signaling nodes.
DEF
3
MNO
6
WXY
9
ABC
21
JKL
5
TUV
8
0
GHI
4
PRS
7
Rls
HOLD
CPE
ITG
DN 7000
WAN
Outgoing call path
COT/
DID
IP Address
47.82.32.123
47.82.32.123
47.82.32.124
415
NPA
NXX
566
ITG
Translation Table
Meridian 1 Meridian 1
553-9474