Nortel Communication Server 1000E Maintenance Manual page 172

172 Proactive Voice Quality Management
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Monitoring of voice quality metrics (latency, jitter, packet loss, and
R-Value) for IP Phones and gateway endpoints.
R-Value monitoring is available on Phase 2 IP Phones only.
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Two levels of voice quality alarms (Warning and Unacceptable).
Alarm thresholds, configured in LD 117, are used to classify system
performance as good, poor, and unacceptable.
This is available on Phase 2 IP Phones only.
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SNMP alarm generation when voice quality metric thresholds are
violated based on a call or bandwidth zone.
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Controlling the number of voice-quality-related SNMP alarms. This
is performed zone-by-zone by configuring zone alarm notification in
LD 117. Alarm control assists in isolating voice quality problems and
reducing network traffic.
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Recording of voice quality metric threshold violations, accessible in IP
Phone Zone Traffic Report 16 (LD 2) and SNMP MIB.
IP Phone Zone Traffic Report 16 (TFS016) includes peg counts
for both alarm levels (Warning and Unacceptable) when recording
threshold violations for latency, jitter, and packet loss. R-Value is
limited to one peg count: Unacceptable.
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R-Value information, available in Operational Measurement (OM)
reports. OM reports contain hourly summary of voice quality metrics
and endpoint registration activity.
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Network diagnostic utilities to identify, isolate, and report network
problems affecting voice quality. The diagnostic utilities are available
by using the Command Line Interface (CLI) or IP Phones with Phase
2 software.
Network diagnostic utilities includes the following:
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Ping
Traceroute
Ethernet statistics
IP Network statistics
UNIStim/Reliable User Data Protocol (RUDP) statistics
Real-Time Control Protocol (RTCP) statistics
Dynamic Host Control Protocol (DHCP) data
Nortel Communication Server 1000
Communication Server 1000E Maintenance
NN43041-700 04.01 4 June 2010
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