Barrier Codes - Avaya Communication Manager Administrator's Manual

Feature Reference

Barrier codes

Barrier codes
A barrier code is a security code used with Remote Access to prevent unauthorized access to your
system.
Brief description
Each barrier code must have a COR and Class of Service (COS) assigned. Remote Access has inherent
risks; it can lead to large-scale unauthorized long-distance use. To increase your system's security use a
7-digit barrier code with Remote Access Barrier Code Aging. You can administer Remote Access Barrier
Code Aging to:
•
Limit the length of time an access code remains valid and/or
•
Limit the number of times an access code can be used
A barrier code automatically expires if an expiration date or number of accesses has exceeded the limits
you set. If both a time interval and access limits are administered for a barrier code, the barrier code
expires when one of the conditions is satisfied.
You determine the barrier code length, the actual barrier code, and the barrier code expiration date on the
Remote Access screen. You must administer expiration dates and access limits for each of the possible 10
barrier codes. If your system has more than 10 Remote Access users, they must share codes.
When you no longer need a barrier code, remove it from the system. Barrier codes should be safeguarded
both by you and their users. If you use barrier codes for outside calls, change them often.
If barrier codes are administered, a special answer-back tone causes a calling modem to leave dial mode.
A modem's dialer is sometimes used to gain access (this tone also cancels echo suppressors in the
network, preventing dual-tone multifrequency (DTMF) tones from breaking dial tone from a switch).
Barrier codes can be used alone or with authorization codes.
Use the status remote-access
NOTE:
Barrier codes are not tracked by CDR. Barrier codes are incoming access codes, whereas,
authorization codes are primarily outgoing access codes.
Related topics
See Remote Access
1388
command to view the status of a Remote Access barrier code.
on page 1645 for more information.
Administrator's Guide for Avaya Communication Manager
November 2003