DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506 Issue 1
April 2000
Features and technical reference
1469Remote Access
20
■Whether the code is active or expired
■Date and reason a code expired
For a detailed description of the status remote-access command and display, refer
to BCS Products Security Handbook.
Barrier Codes
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 the Remote Access
Barrier Code Aging feature to:
■Limit the length of time an access code remains valid
■Limit the number of times an access code can be used
■Both of the above
You must administer expiration dates and acces s limits for each of the possi ble 10
barrier codes. If your system has more than 10 Remote Access users, they must
share codes. 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 e xpires when o ne o f the
conditions is satisfied.
If barrier codes are administered, a special answer-back tone causes a calling
modem to leave dial mode. A modem’s dialer is sometime s u sed to gain access
(this tone also cancels echo suppressors in the network, preventing DTMF tones
from breaking dial tone from a switch). Barrier codes can be used alone or with
authorization codes.
To view the status of a Remote Access barrier code, use the status remote-access
command.
NOTE:
Barrier codes are not tracked by Call Detail Recording (CDR). Barrier codes
are incoming access codes, whereas, authorization codes are primarily
outgoing access codes.
When you no longer need a barrier code, remove it from the syste m. Barri er co des
should be safeguarded both by you and their users.