Motorola Solutions AP-6511 Access Point System Reference Guide
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The RF Quality Index area displays the following information:
Rx Errors Displays the degree of errors encountered during data transmission. The
higher the error rate, the less reliable the connection or data transfer.
Rx Actions Displays the number of receive actions during data transmission.
Rx Probes Displays the number of probes sent. A probe is a program or other device
inserted at a key juncture in a for network for the purpose of monitoring or
collecting data about network activity.
Rx Power Save
Poll
Displays the power save using the Power Save Poll (PSP) mode. Power Save
Poll is a protocol, which helps to reduce the amount of time a radio needs to
powered. PSP allows the WiFi adapter to notify the access point when the
radio is powered down. The access point holds any network packet to be sent
to this radio.
RF Quality Index Displays information on the RF quality of the selected wireless client. The RF
quality index is the overall effectiveness of the RF environment as a
percentage of the connect rate in both directions as well as the retry rate and
the error rate. The RF quality index value can be interpreted as:
• 0–20 — very poor quality
• 20–40 —poor quality
• 40–60 —average quality
• 60–100 — good quality
Retry Rate Displays the average number of retries per packet. A high number indicates
possible network or hardware problems.
SNR Displays the signal to noise ratio of the wireless client associated with the
Access Point.
Signal Displays the power of the radio signals in dBm.
Noise Displays the disturbing influences on the signal by the interference of signals.
Error Rate Displays the number of received bit rates altered due to noise, interference,
and distortion. It’s a unitless performance measure.
MOS Score Displays the average call quality using the Mean Opinion Score (MOS) call
quality scale. The MOS scale rates call quality on a scale of 1-5, with higher
scores being better. If the MOS score is lower than 3.5, it’s likely users will
not be satisfied with the voice quality.
R-Value Displays the R-value. R-value is a number or score that is used to
quantitatively express the quality of speech in communications systems. This
is used in digital networks that carry Voice over IP (VoIP) traffic. The R-value
can range from 1 (worst) to 100 (best) and is based on the percentage of users
who are satisfied with the quality of a test voice signal after it has passed
through a network from a source (transmitter) to a destination (receiver). The
R-value scoring method accurately portrays the effects of packet loss and
delays in digital networks carrying voice signals.
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