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MERLIN LEGEND Communications System Release 6.1
Network Reference
555-661-150
Issue 1
August 1998
Security
Page 4-3Overview
4
Table 4–1. Calling Restrictions and Security Feature Planning in Networks
Restriction,
Feature, or
Setting
Factory
Setting Suspended? Description
Personal Lines Not
Applicable
Not Applicable Private network trunks must never be assigned as personal lines or extensions.
Pool buttons Not
Applicable
Not Applicable Users (including DSS users) must never be given Pool button access to pools
of tandem trunks.
Dial Access
to Pools
Not Allowed No Users must never be given dial access to pools of tandem trunks.
Trunk-to-Trunk
Transfer
Not Allowed Yes An extension that is prohibited from making trunk-to-trunk transfers cannot
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
Restriction:
Extensions
On Yes Despite outward restrictions, users can make calls to non-local extensions.
For Release 6.1 and later, calls can be routed to centralized VMA/AA.
Outward/Toll
Restriction:
Remote Access
On No In order to route ARS and UDP calls across the network, this setting should be
changed to unrestricted, as applied to the default COR for all tie and/or all non-
tie tandem facilities. See “Remote Access Default Class-of-Restriction Settings”
on page 6.