Ani signaling – Nortel Networks NN43001-106 User Manual
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Automatic Number Identification
•
removes the connection between the trunk and the MF sender and
establishes the speech path to the trunk
With the E.164/ESN Numbering Plan Expansion, the MF sender card can
send 32 digits to the XCT card. This allows an International Number to be
sent in one ANI message, instead of two ANI messages.
ANI signaling
E&M, DX or loop signaling sends ANI information to the Central Office. ANI
supports three basic methods: Bell, NT400 and NT500.
•
The Bell method interfaces the system to
— Bell system TOPS, TSPS or CAMA offices
— Strowger Automatic Toll Ticketing (SATT) systems types 57, 59, 62,
and 70A. These systems accept 1+ and 0+ calls from the system
using MF pulsing through customer-provided adapter circuits
— Stromberg Carlson Ticketing Systems
•
The NT400 method (Modes A and B) is an interface to the Nortel NT400
ticketing system. Mode A repeats the toll access code (0 or 1) in the
called number, whereas Mode B does not.
•
The NT500 method (Modes A, B and C) interfaces to Nortel NT500
ticketing systems.
— Mode A repeats the Access Code (0 or 1) in the called number
format for Central Offices that use MF outpulsing and combined
trunk groups.
— Mode B does not repeat the access code.
— Mode C is used in Central Offices with MF outpulsing and trunk
groups dedicated only to 1+ or 0+ calls.
The Bell and the NT400/500 methods have different supervisory signals
and different number formatting, as illustrated in
Supervisory signals (Bell
method)
and
Figure 6 "Supervisory signals (NT400/500 method)" (page
. Additionally, there are formatting differences between the NT400 and
NT500 method.
Table 18 "Called and calling number information format
through
Table 21 "Possible combinations of trunk
types and ANI methods" (page 416)
summarize the possible combinations
of trunk types and ANI signaling methods.
The MF sender cable allows the system to independently outpulse up to 16
digits (including starting and ending digits, called KP and ST respectively)
in each of the 30 possible network loop time slots. With the E.164/ESN
Nortel Communication Server 1000
Features and Services - Book 1 of 6 (A to B)
NN43001-106
01.04
Standard
Release 5.0
27 July 2007
Copyright © 2007, Nortel Networks
.