Instruction manual

Flexible Trunk to Trunk Connections Page 1557 of 3156
Features and Services
Feature interactions
Access Restrictions
Access Restrictions limits terminal access to the exchange network, private
network, and certain features and services. During the call origination
process, access checks are made by the system on the following:
• Class of Service of an individual terminal
• Trunk Group Access Restrictions (TGAR) code of a 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
• area code and exchange code, if dialed by terminals with toll denied or
conditional toll denied Class of Service, using direct trunk access codes
and Code Restriction Tables
• Network Class of Service (NCOS) of a terminal, if Basic Alternate Route
Selection (BARS)/Network Alternate Route Selection (NARS) or
Coordinated Dialing Plan (CDP) access codes are dialed, or if direct
trunk access codes are dialed and New Flexible Code Restriction
(NCFR) tables are programmed
Previously restricted connections by any feature other than Trunk Barring
cannot be lifted or avoided by the Flexible Trunk to Trunk Connections
feature. Basically, all existing restrictions apply with the exception of Trunk
Barring restrictions.
Call Transfer
If Flexible Trunk to Trunk Connections allows a telephone set to transfer to
an outgoing trunk, Access Restrictions can still block the transfer. If a
telephone is denied transfer by the Flexible Trunk to Trunk Connections
feature, then the transfer is blocked regardless of Access Restrictions.
For a transfer to be completed, both Access Restrictions and Flexible Trunk
to Trunk Connections must allow the transfer.