Controlling System Access; Class Of Service - Nortel Modular ICS 6.0 Installer's Manual

Controlling system access

Modular ICS programming provides several ways of
protecting your Norstar system from unauthorized access or
use. These features are used in combination to provide control
both to users and to lines.

Class of Service

Class of Service (COS) refers to the capabilities that Norstar
provides to users who access the system from the public or
private network. A password defines which set of capabilities
the user is to have access to.
The COS includes:
• filters that restrict dialing on the line
• an access package defines the set of line pools that may be
accessed and whether or not the user has access to the
paging feature
The COS that is applied to an incoming remote access call is
determined by:
• the filters that you apply to the incoming trunk
• the Class of Service password that the caller used to gain
access to the Norstar system
In cases where DISA is not automatically applied to incoming
calls, the remote caller can change the COS by dialing the
DISA DN and entering a COS password.
To program COS passwords, see Passwords on page 382 and
the Modular ICS 6.0 System Coordinator Guide.
P0992638 03 Modular ICS 6.0 Installer Guide