Security Management - Nera Evolution Series Technical Description

7.1.2.1. System performance calculations
Performance is based on measuring the error-rate on individual E1 or T1. The following system quality
calculations are included:
•
Error Second Ratio (ESR)
•
Severely Error Second Ratio (SESR)
•
Background Block Error Ratio (BBER)
•
Unavailable state (UAS)
7.1.2.2. Performance record logging
Performance logging can be activated for one E1/T1 at a time. 15-min, 24-hour and month records are
calculated. The log contains the current and last month, current and last 24-hour and current and the
sixteen last 15-min records. Threshold values can be defined each of the performance records and a
performance alarm will be raised if the threshold is exceeded for any of the periods.
In addition cumulative error counters for parity pulses are available. The operator can read and reset the
counters.
7.1.3.

Security management

The user must have a username and password defined in the NE in order to log in. Each user name is
defined with access privileges. Four levels are defined;
User level Privileges
Passive Users Passive users are only able to monitor data. They are not able to change any
configuration.
Active Users
Same as Passive. In addition active users are able to reset counters.
Master Users Master users have access to all commands, except those related to user account
administration and Configuration/SW download.
Admin Users Admin users have access to all commands. The Admin user is the administrator and is
responsible for adding, deleting and managing user accounts and privileges. In addition
the admin user is responsible for Configuration/SW download.
7.1.3.1. Security event logging
The NE can log events related to security. The log size is 1000 events. When it is full it will wrap-around.
The operator (with administrator privileges) can also clear the log.
42 Evolution Series - XPAND NGP\00329 Rev. C 23-06-2006