Lucent Technologies 5 User Manual

Issue 1

June 1997

Customer Support Information 

Page A-15

Other Security Hints 

1

Make sure that the Automated Attendant Selector Codes do not permit outside 
line selection.

Following are a number of measures and guidelines that can help you ensure the 
security of your communications system and voice messaging system.

Multiple layers of security are always recommended to keep your system secure.

1

Everyone in your company who uses the telephone system is responsible for 
system security. Users and attendants/operators need to be aware of how to 
recognize and react to potential hacker activity. Informed people are more likely to 
cooperate with security measures that often make the system less flexible and 
more difficult to use.

■

Never program passwords or authorization codes onto Auto Dial buttons. 
Display telephones reveal the programmed numbers and internal abusers 
can use the Auto Dial buttons to originate unauthorized calls.

■

Discourage the practice of writing down barrier codes or passwords. If a 
barrier code or password needs to be written down, keep it in a secure 
place and never discard it while it is active.

■

Operators or attendants should tell their system manager if they answer a 
series of calls where there is silence on the other end or the caller hangs 
up. 

■

Users who are assigned voice mailboxes should frequently change 
personal passwords and should not choose obvious passwords.

■

The system manager should advise users with special telephone privileges 
(such as Remote Access, Outcalling, and Remote Call Forwarding) of the 
potential risks and responsibilities.

■

Be suspicious of any caller who claims to be with the telephone company 
and wants to check an outside line. Ask for a callback number, hang up 
and confirm the caller’s identity.

■

Never distribute the office telephone directory to anyone outside the 
company; be careful when discarding it (shred the directory).

■

Never accept collect telephone calls.

■

Never discuss your telephone system’s numbering plan with anyone 
outside the company.