Metric Description
Packet loss rate The percentage of total packets loss versus packets
received.
R-factor A measurement of voice quality based on network
impairments including burst packet loss, delay and
encoding/decoding algorithm selection.
End of call report
The IP Deskphone sends a report using VQMON Publish message to the proxy. The proxy redirects
the publish ID described within the report. An end-of-call report is always generated if VQMON is
enabled. The IP Deskphone does not negotiate or exchange messages with the device defined
using PUBLISH_IP options.
Session interval report
The IP Deskphone can send voice quality reports at time intervals defined in the Device
Configuration file. The minimum and default time interval is 60 seconds. If the IP Deskphone sends
session interval reports more frequently, then a threshold violation has occurred.
Alert interval report
When the IP Deskphone detects that a voice quality metric has exceeded a threshold, the
IP Deskphone initiates a timer which sends a message to the server every 5 seconds. When all
voice quality metrics fall below the threshold values, the IP Deskphone stops sending VQMON
Publish messages with the report. The alert interval report does not differ from the session interval
reports or end-of-call reports.
Voice Quality Monitoring
144 SIP Software for Avaya 1200 Series IP Deskphones-Administration March 2015
Comments? infodev@avaya.com
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