Nortel 1000 Features And Services Fundamentals page 399

Authorization Code Security Enhancement
If the Authorization Code is used to change the Class of Service of the user,
the new Class of Service must be TLD, CTD, or CUN. If an Authorization
Code entered after FCA has altered the Class of Service to unrestricted
(UNR), the change made by the Authorization Code still comes into effect.
If the originator's Network Class of Service (NCOS) has been changed by
an Authorization Code prior to an applicable FCA entry, the new NCOS is
replaced by the FCA NCOS, provided the new Facility Restriction Level
(FRL) is not lower than the existing FRL. Similarly, if the originator's NCOS
has been changed by an FCA entry, the NCOS is changed again by a valid
Authorization Code entry.
Basic Alternate Route Selection (BARS)
Network Alternate Route Selection (NARS)
If BARS or NARS is equipped, a Network Class of Service (NCOS)
associated with FCA must be defined in the Customer Data Block.
Call Detail Recording
Normal Call Detail Recording (CDR) charge account numbers can still be
entered before or after an FCA code. If the criteria for an FCA call are not
met, (CDR) charge account numbers function in the normal manner.
Call Transfer
Conference
If an FCA code is entered at the beginning of a call, the new unrestricted
Class of Service remains in effect for any transfer or conference made
during the call. If all FCA criteria are met, an account number entered after
activating the Conference key, Call Transfer key, or a switchhook flash is
interpreted as an FCA code.
Last Number Redial
These codes are not stored in Last Number Redial (LNR). To use these
features when calling the number stored in LNR, the code must first be
dialed manually. When dial tone is returned, LNR can be used to complete
the dialing.
Pre-translation
The first digit dialed after a valid Charge Account Code is sent to the
pre-translator.
Scheduled Access Restrictions
FCA can be used to override Scheduled Access Restrictions (SAR) on a
per-call basis, provided the current Class of Service (COS) of the telephone
or trunk is CUN, TLD, or CTD. The current COS is the COS in force
according to the SAR schedule. If an Authorization Code that sets the COS
Copyright © 1994–2008, Nortel Networks
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Nortel Communication Server 1000
Features and Services Fundamentals — Book 2 of 6 (C)
NN43001-106 02.04 Standard
Release 5.5 9 May 2008
Feature interactions 399