Class of service restrictions, Tables – Nortel Networks NN43001-106 User Manual

Page 154

154

Access Restrictions

trunk access codes are dialed and New Flexible Code Restriction tables
are programmed.

If any restrictions are detected when a call is placed, the call is given
intercept treatment as defined in the Customer Data Block.

Class of Service restrictions

The Class of Service restrictions assigned to telephones and TIE trunks
control the degree of access to and from external networks and certain
features within the system. The eight possible Class of Service Access
Restrictions are described in this feature module. These restrictions are
applied by service change overlay programs to terminals.

Table 1 "Type

of terminal and the corresponding overlay program for configuring Class
of Service restrictions" (page 154)

lists the type of terminals and the

corresponding overlay program.

Table 1
Type of terminal and the corresponding overlay program for configuring Class of Service
restrictions.

Terminal Type

Overlay

Analog (500/2500 type) telephone

Meridian 1 proprietary telephones, Meridian Mail channels

Incoming TIE trunks

Authorization Codes

DISA ports

Descriptions of the eight Class of Service Access Restrictions follow, from
the most restricted to the least restricted.

Fully Restricted Service

There are three levels of Fully Restricted Service:

•

FR2

— allowed to originate and receive internal calls

— denied access to TIE and Common Controlled Switching

Arrangement networks

— denied access to and from the exchange network, either by dialing,

through an attendant, or using call modification from an unrestricted
telephone

Call modification takes place when certain features are activated
while a call is in progress (for example, Call Park, Call Pickup, Call
Transfer, Conference, or Night Answer).

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