AT&T MERLIN LEGEND Release 3.1 Maintenance And Troubleshooting Manual page 271

Customer Support Information
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Keep the system console and supporting documentation in an
office that is secured with a changeable combination lock. Provide
the combination only to those individuals having a real need to
enter the office.
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Keep telephone wiring closets and equipment rooms locked.
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Keep telephone logs and printed reports in locations that only
authorized personnel can enter.
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Design distributed reports so they do not reveal password or trunk
access code information.
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Keep the voice messaging system Remote Maintenance Device
turned off.
Limiting Outcalling
When Outcalling is used to contact subscribers who are off-site, use the
MERLIN LEGEND Communications System Allowed Lists and Disallowed
Lists or Automatic Route Selection features to minimize toll fraud.
If the Outcalling feature will not be used, outward restrict all voice
messaging system ports. If Outcalling will be used, ports not used for
Outcalling should be Outward Restricted (for Merlin Mail Voice Messaging
Systems, port 2 on a two-port system, port 4 on a four-port system, ports 5
and 6 on a six-port system). Use Outward Restriction, Toll Restrictions,
Allowed Lists, Disallowed Lists and Facility Restrcitions Levels, as
appropriate to minimize the possibility of toll fraud.
Maintenance and Troubleshooting
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