Nortel Networks NN43001-106 - Manual (Page 422)

422 Automatic Number Identification
Some Central Offices indicate ANI failure with an 8-digit string consisting
of NPD followed by 911-0YYY, where YYY denotes the problem. The ANI
string 911-0YYY is not treated as a failure so that the digits appear on the
screen rather than being overwritten by seven zeros.
Redundancy and call loss requirements are very precise. If the AML
terminal display is unavailable (for example, if the host computer is down),
the ANI information still appears on the telephone display.
CDR for 911 ANI calls
If CLID is set to YES in LD 17, 911 ANI information is included in CDR Q
records (connection records). CDR records affected are Normal Records,
Start/End Records, Authorization Code Records, Connection Records (Q,
R, F) and Charge Account Records.
The CDR Q record option is not recommended, since the Meridian 911
application does not need Connection Records and they consume valuable
CPU real time. The CDRQ record can nonetheless be configured to include
ANI.
Route Selection (RS-ANI)
The optional Route Selection (RS-ANI) is provided with ANI. RS-ANI routes
toll calls automatically through specified trunks to toll offices and routes
local calls through CO trunks to local switching offices.
To place an outgoing CO call, the station user dials the RS-ANI Access
Code (typically 9), followed by a CO Directory Number. If the user dials
0 or 1 after the Access Code, the call routes through a toll trunk group;
otherwise, the call routes through a CO trunk group.
Operation
After receiving the RS-ANI Access Code, the system sends the user the
second dial tone. The user has 30 seconds to dial a digit or digits. Following
this time frame, the system removes the dial tone and provides overflow
tone for an additional 15 seconds. The second dial tone is removed after
the first digit or digits are dialed.
Table 24 "RS-ANI operation" (page 423)
shows the system action that corresponds to the digit dialed.
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
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