Performance Monitoring on SIP PH
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Overview
Performance monitoring is performed on the packet layers that
terminate at the serving SIP PH. Information accumulated by the
monitoring process enables the operational performance of the packet
layers, used to transport SIP signaling calls, to be accurately assessed.
Performance monitoring is performed for the following packet layers:
• Ethernet
• IP
• Internet Control Message Protocol (ICMP)
• SCTP
• Session Initiation Protocol for Packet Trunking (SIPT)
Performance
Measurements
Performance measurements are performed on packet layers that
terminate on serving SIP PHs.
The basic interval for performance measurements is 15 minutes. A set
of measurements is maintained for the following periods:
• current 15-minute period,
• previous 32 fifteen-minute periods, and
• current and previous 24-hour periods.
To detect excessive error rates automatically, thresholds are specified
for the current 15-minute and 24-hour measurements.
Performance Parameters
Various parameters are used to quantify packet layers performance.
The parameters are derived from the frequency of protocol errors
detected at the serving SIP PH.
Reports
Violations of 15-minute and 24-hour thresholds are reported
independently. Reports containing performance data are obtained using
an MML command.
Alert Report Control
A packet layer threshold crossing alert (TCA) is reported whenever an
error count crosses the specified threshold. TCA reports can be
inhibited by using either RC/V or an MML command. Sets of
parameters are defined to control the threshold crossing alerts that are
Maintenance Considerations
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235-200-118
Issue 3.02B, March 2007
Lucent Technologies
7-91
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