AT&T MERLIN LEGEND Communications System Key System Planning Forms Errata Instruction Manual download pdf (Page 281)

MERLIN LEGEND Communications System Release 5.0

System Planning

555-650-112

Issue 1

June 1997

Customer Support Information

Page A-19Other Security Hints

Establishing a Policy 1

As a safeguard against toll fraud, follow these guidelines for your MERLIN

LEGEND Communications System and voice messaging system:

■ Change passwords frequently (at least quarterly). Changing passwords

routinely on a specific date (such as the first of the month) helps users to

remember to do so.

■ Always use the longest-length password allowed.

■ Establish well-controlled procedures for resetting passwords.

■ Limit the number of invalid attempts to access a voice mailbox to five or

less.

■ Monitor access to the MERLIN LEGEND Communications System dial-up

maintenance port. Change the access password regularly and issue it only

to authorized personnel. Disconnect the maintenance port when not in use.

(However, this eliminates Lucent Technologies’ 24-hour maintenance

surveillance capability and may result in additional maintenance costs.)

■ Create a communications system management policy concerning

employee turnover and include these suggestions:

— Delete all unused voice mailboxes in the voice mail system.

— If a terminated employee had Remote Access calling privileges and a

personal authorization code, remove the authorization code

immediately.

— If barrier codes and/or authorization codes were shared by the

terminated employee, these should be changed immediately.

■ Regularly back up your MERLIN LEGEND Communications System files to

ensure a timely recovery should it be required. Schedule regular, off-site

backups.

■ Keep the Remote Maintenance Device turned off when not in use by

Lucent Technologies or your authorized dealer.

■ Limit transfers to registered subscribers only.

■ Use the Security Violations Notification options (Mailbox Lock or Warning

Message) to alert you of any mailbox break-in attempts. Investigate all

incidents.

■ Review security policies and procedures and keep them up to date.

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AT&T MERLIN LEGEND Communications System Key System Planning Forms Errata Instruction Manual Page 281