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System description
Figure 20
North American dialing plan — call flow
Rls
HOLD
1
2
ABC
3
DEF
4
GHI
5
JKL
MNO
6
7
PRS
8
TUV
WXY
9
0
DN 7000
Translation Table
NPA
415
NXX
566
Flexible Numbering Plan
Electronic Switched Network (ESN5) network signaling
553-3001-363
Standard 2.00
IPE
IP Address
47.82.32.123
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).
IP Trunk 3.01 (and later) and ITG Trunk 2.x support a mixed network of
remote nodes with ESN5 and standard (that is, non-network) signaling. ESN5
is an extension of MCDN signaling which can be used by IP Trunk 3.01 (and
later), ITG Trunk 2.x, and IP Peer (CS 1000S and CS 1000M).
September 2004
Meridian 1
Meridian 1
47.82.32.124
WAN
Outgoing call path
COT/
DID
47.82.32.123
553-9474