Table 4–1. Calling Restrictions and Security Feature Planning in Networks

Restriction,

 

 

 

Feature, or

Factory

 

 

Setting

Setting

Suspended?

Description

Personal Lines

Not

Not Applicable

Private network trunks must never be assigned as personal lines or extensions.

 

Applicable

 

 

Pool buttons

Not

Not Applicable

Users (including DSS users) must never be given Pool button access to pools

 

Applicable

 

of tandem trunks.

Dial Access

Not Allowed

No

Users must never be given dial access to pools of tandem trunks.

to Pools

 

 

 

Trunk-to-Trunk

Not Allowed

Yes

An extension that is prohibited from making trunk-to-trunk transfers cannot

Transfer

 

 

transfer an outside call to another local system trunk connected to the PSTN

 

 

 

that is a PSTN trunk-to-trunk transfer. However, despite prohibitions, a user can

 

 

 

transfer a private network trunk call to a non-local extension or to an outside

 

 

 

central office trunk. A restricted user can also transfer an outside call to a local

 

 

 

or non-local extension but not to an outside PSTN trunk.

 

 

 

Note that if an extension receives an outside call transferred from a non-local

 

 

 

extension from a non-local extension over a tandem trunk, the user can then

 

 

 

transfer this outside call to an outside PSTN facility using the private network or

 

 

 

the PSTN, if assigned to a UDP route. In this case the user has performed a

 

 

 

PSTN trunk-to-PSTN trunk transfer and possibly bypassed intended

 

 

 

restrictions. In this scenario, a HIGH FRL appropriate for the route, should be

 

 

 

considered.

Outward

On

Yes

Despite outward restrictions, users can make calls to non-local extensions.

Restriction:

 

 

For Release 6.1 and later, calls can be routed to centralized VMA/AA.

Extensions

 

 

 

Outward/Toll

On

No

In order to route ARS and UDP calls across the network, this setting should be

Restriction:

 

 

changed to unrestricted, as applied to the default COR for all tie and/or all non-

Remote Access

 

 

tie tandem facilities. See “Remote Access Default Class-of-Restriction Settings”

 

 

 

on page 6.

 

 

 

4

 

 

NetworkReference 555-661-150

MERLINLEGEND Communications

 

 

 

 

 

 

Overview

Security

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

System Release 6.1

 

August1998

 

Page

 

 

Issue 1

 

4-3

 

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Lucent Technologies 555-661-150 manual Overview