Avaya AP-4 User Manual page 212

Link Test (AP-4 Only)
• SNR (dB): The Signal to Noise ratio for the received signal.
The displayed value is the running average since the start of the
test and is reported in decibels (dB). Higher numbers
correspond to a stronger link. The bar graph also displays the
relative strength of the link (a green bar indicates a strong link, a
yellow bar indicates a fair link, and a red bar indicates a weak
link).
• Signal (dBm): The strength of the received signal in dBm
(decibels referenced to 1 milliwatt). The displayed value is the
running average since the start of the test and is reported as a
negative number. Higher numbers correspond to a stronger link.
For example, -40 dBm corresponds to a stronger signal than -50
dBm. The bar graph also displays the relative strength of the
signal (a longer bar represents a stronger signal).
• Noise (dBm): The strength of the noise detected at the receiver
reported in dBm (decibels referenced to 1 milliwatt). The
displayed value is the running average since the start of the test
and is reported as a negative number. Noise can interfere with
the received signal so a smaller noise value corresponds to a
stronger link. For example, a noise level of -95 dBm is more
desirable than a noise level of -89 dBm. The bar graph displays
the relative strength of the noise level (a shorter bar represents a
weaker noise level and is more desirable than a longer bar).
• 11 Mbps (pkts): The number of packets received at the 11
Mbits/sec transmit rate since the start of the Link Test. In
general, most packets will be received at the 11 Mbits/sec rate if
the devices have a strong link.
5-16 Avaya Wireless AP-4/AP-5 User's Guide