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Chapter 3 System Features
System Security
3-76
255-700-447
PacketStar
®
PSAX 2300 Multiservice Media Gateway User Guide
, Issue 1
Release 9.0.0
Maintenance Testing on DS1 Interfaces
The Maintenance Tests feature provides the capability to perform out-of-ser-
vice maintenance testing on full-rate DS1 interfaces (E1 interface support
will be added in phase 2). Capabilities of this feature include the following:
•
Generating loopback codes to activate and deactivate line, payload, and
facility loop codes
•
Performing bit error rate tests (BERT) using a test pattern (only a finite
number of patterns can be used)
Once the specific facility has been looped, the BER testing is typically used to
qualify the facility before assigning customer traffic, and to perform mainte-
nance testing for troubleshooting sectionalized spans. Because in some cases
customer CSU/DSU equipment might be located downstream at the cus-
tomer premises from the PSAX system, maintenance testing also requires the
ability of the PSAX module’s port in the PSAX system to ignore any facility
loop codes that are received and to simply pass them along. BERT synchroni-
zation status and error counter fields are displayed or can be retrieved via
MIB variables. The following patterns are supported:
•
All-1s
•
All-0s
•
OneIn8
•
ThreeIn24
•
QRSS
nn
(where
nn
=11,15, 20, or 23)
•
UserConfigured
n
Byte (where
n
=1, 2, 3, or 4)
The BER testing can be run as a short-term test for troubleshooting the facil-
ity or as a test running continuously for 24 to 48 hours.
Reduction in Post-Dial Delay
Event handling processes within the PSAX system are designed so that the
amount of time needed to set up a call for an SVC connection is now 30 msec
or less.
System Security
RADIUS Server Authentication for PSAX System Access
The RADIUS Support for Console/Telnet Access feature provides a conve-
nient method for storing centralized user account administration data for
multiple PSAX systems. The RADIUS servers can be configured to store
authentication information for many PSAX systems in a large network. The
PSAX system functions as a network access server (NAS) client of the
RADIUS server. The RADIUS server authenticates the PSAX system user
name using the console or telnet methods via a RADIUS protocol. On the
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