DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506 Issue 1
April 2000
Enhancing system security
312System security checklist
11
6. On the Feature Access Code screen, Facility Test Calls Access Code, the
Data Origination Access Code, and the Data Privacy Access Code fields,
change from the default or remove them.
NOTE:
These codes, when dialed, return system dial tone or direct access to
outgoing trunking facilities. Transfers to these codes can take place
via an unsecured vector with “collect digits” steps or an unsecured
voice mail system.
7. Restrict Call Forwarding Off Net on every class of service.
Refer to ‘‘Class of Service’’ on page 532 for more information on Class of
Service.
NOTE:
You cannot administer loop-start trunks i f Call For w arding Of f Net i s
required.
8. If loop start trunks are administered in the switch and cannot be changed b y
the Local Exchange Company, block all class of service from forwarding
calls off-net. In the Class of Service screen, Restriction Call Fwd-Off Net
field, set t o y for the 16 (0-15) COS numbers.
Refer to ‘‘Class of Service’’ on page 532 for more information.
NOTE:
If a station is call forwarded off-net and an incoming call to the
extension establishes using a loop-start trunk, incorrect disconnect
supervision can occur at the Local Exchange Central Office when th e
call terminates. This gives the caller recall or transfer dial tone to
establish a fraudulent call.
9. Administer Call Detail Recording on all trunk groups to record both
incoming and outgoing calls.
Refer to ‘‘Collecting information about calls’’ on page 439 for more
information.
10. On the ‘‘Route Pattern’’ on page 865, be careful assigning route patterns
with an FRL of 0; these allow access to outgoing trunking facilities. Lucent
recommends assigning routes with an FRL of 1 or higher.
NOTE:
An exception might be assigning a route pattern with an FRL of 0 to
be used for 911 calls so even restricted users may dial this in
emergencies.