Nortel Meridian Companion PCI User Manual page 51

46 Display screens
Companion Diagnostic Software for PCI User Guide
calculated threshold. The cause of a weak average radio RSSI
in a cell may be high traffic in adjacent cells.
b. The average radio RSSI is weak for a radio.
This warning is issued for radios whose average RSSI is
below a threshold. The calculated threshold is based on the
quality of service measure. If a radio in a Base Station is
demonstrating low RSSI, it must be checked against the other
radio in the Base Station.
3. Interference
Interference examines the channel occupancy pattern. If the
higher channel segments are used more than the lower ones, this
is an indication of a potential source of interference.
4. Traffic
Traffic examines individual radios and cells for traffic
overloading.
Traffic statistics are kept for the last 24 hours of operation. Every
hour is checked for high traffic conditions for both cells and
radios.
There are three types of warnings issued in this category.
a. Total traffic is high in a cell.
This warning is issued for cells whose total traffic (i.e. the
sum of the traffic on all radios in the cell) is greater than a pre-
defined threshold (currently set to 2.4 Erlangs). When this
situation occurs, the cell starts to run out of free channels or
radios. In this case you should add another Base Station to the
cell and/or redeploy the system focusing on increasing the
cell density near the high traffic cell.
b. Average radio traffic is high in a cell.
This warning is issued for cells whose average radio traffic is
greater than a system calculated threshold. When this
situation occurs, there is a high probability that a call attempt
will be blocked because there are no radios available in the
cell. In this case, you should add another Base Station to the
cell.
P0886303 Issue 01 Standard