Avaya Business Communications Manager 5.0 - Fault and Performance Management Manuel d'utilisateur Page 43
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Telephony metrics monitoring 43
Nortel Business Communications Manager 5.0
Fault and Performance Management
NN40170-701 01.01 Standard
August 2009
Copyright © 2009 Nortel Networks
PVQM telephony metrics monitoring procedures navigation
• Setting the PVQM threshold settings (page 43)
• Viewing PVQM telephony metrics (page 47)
Setting the PVQM threshold settings
You can use PVQM to configure and report threshold violations for the
following voice quality metrics:
•
packet loss—packets lost in transit due to errors or network failures
• inter arrival jitter—the variable delay on a packet as it traverses a network
• round trip delay
• listening R factor—the transmission quality as experienced by the user; this
metric reflects the segment of the call that is carried over the RTP session
There are two thresholds for PVQM metrics: Warning, and Unacceptable. A
violation of the Warning threshold indicates that the voice quality is reduced
but is still within an acceptable range. A violation of the Unacceptable
threshold indicates a severe degradation in voice quality.
If an alarm is generated to report a threshold violation, additional information
is included in the alarm to indicate the source of the alarm and provide other
troubleshooting information. Table 11PVQM Alarms (page 43) lists the
abbreviations used in the alarm text to present this additional information.
Table 11 PVQM Alarms
Abbreviation Attribute Value Description
cT codec type alphanumeric Vocoder type used on this call
eT endpoint type S or D S indicates softclient
D indicates desktop
nLR network loss rate percentage, scaled by 256
(e.g. 354 = 1.4%)
Rate of network packet los
dR average discard rate percentage, scaled by 256 Average rate of discards due to
jitter
bD burst loss density percentage, scaled by
256
Density of lost and discarded
packets during burst periods
bL burst length milliseconds Average length of bursts
gD gap loss density percentage, scaled by 256 Density of lost and discarded
packets during gap periods
gL average length of gap milliseconds average length of gap
eSD end system delay milliseconds Average end system delay on
the call
- Fault and Performance 1
- Management 1
- Contents 3
- Alarm Severity reference 31 4
- System metrics monitoring 33 4
- System LEDs reference 65 5
- Alarm reference 67 5
- 6 Contents 6
- New in this release 7
- 8 New in this release 8
- Introduction 9
- 10 Introduction 10
- Navigation 11
- BCM fault management scope 11
- BCM alarms 12
- Alarm administration 12
- Alarms and the Alarms Panel 13
- Alarm banner 14
- Alarm set 15
- Alarm to email forwarding 16
- Alarm profile 17
- Alarms and LEDs 18
- Alarm configuration scope 19
- NN40170-701 01.01 Standard 20
- August 2009 20
- Administering alarms 21
- Monitoring an alarm condition 22
- Procedure steps 22
- Acknowledging an alarm 22
- Clearing the alarm log 23
- Using the alarm banner 24
- Using the alarm set 24
- Responding to LED indicators 25
- Configuring alarm behavior 25
- Configuring an email 28
- Variable definitions 30
- Alarm Severity reference 31
- Manager 32
- System metrics monitoring 33
- Configuring the QoS monitor 35
- Viewing QoS logs 36
- UPS metrics 37
- NTP metrics 38
- Accessing the NTP metrics 39
- Telephony metrics monitoring 41
- Activity Reporter Basic 48
- Trunk module metrics 50
- Trunk module CSU statistics 52
- Enabling the internal CSU 54
- Checking the CSU alarms 55
- Checking bipolar violations 56
- Checking short-term alarms 57
- Checking defects 57
- CbC limit metrics 58
- Hunt group metrics 60
- PSTN Fallback metrics 62
- System LEDs reference 65
- 66 System LEDs reference 66
- Shutdown sequence or failure 66
- Start-up profile sequence 66
- Power Status Description 66
- Alarm reference 67
- 68 Alarm reference 68
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