Nortel Networks NN43001-106 - Manual (Page 153)

153
Access Restrictions
Contents
This section contains information on the following topics:
"Feature description" (page 153)
"Operating parameters" (page 161)
"Feature interactions" (page 162)
"Feature packaging" (page 164)
"Feature implementation" (page 164)
"Feature operation" (page 169)
Feature description
Access Restrictions limit terminal access to the exchange network, private
network, and certain services and features.
Access Restrictions can be temporarily overridden by the use of other
features, if equipped, including Forced Charge Account, Authorization Code,
and System Speed Call.
During the call origination process, access checks are made by the system
on the following:
• the Class of Service (CLS) of the individual terminal
• the Trunk Group Access Restriction (TGAR) code of the terminal if a
direct trunk access code is dialed or as an optional feature when a Basic
Alternate Route Selection (BARS) or Network Alternate Route Selection
(NARS) access code is dialed
• the area and exchange codes dialed by terminals with Toll Denied or
Conditionally Toll Denied Class of Service using direct trunk access
codes and Code Restriction tables, and
• the Network Class of Service (NCOS) of the terminal if BARS/NARS or
Coordinated Dialing Plan (CDP) access codes are dialed or if direct
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
.