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The switch continuously (once a minute) monitors the Link signal from the IP
camera. If the switch fails to detect the Link signal, then a one-minute timer is
started, and after that the connection is monitored again. If the Link signal does
not appear, the switch removes power for 10 seconds and supplies it again,
rebooting the camera. In other words, if the switch fails to see the Link signal
from the camera twice in succession at an interval of 1 minute, it reboots the
camera. The Auto Restart option is available via the web interface in the Special
Function section (see the Configuration Manual).
The switch constantly (1 time per minute) polls the IP camera. If the switch does
not receive a response, then a one-minute timer is started, during this time the
poll is repeated every 10 seconds. If the camera has not responded within a
minute, the switch removes power from the camera for 10 seconds and supplies
it again, rebooting the camera. If the camera has responded at least once, the
switch makes a decision that the camera is functional and starts the poll cycle
again, polling the camera 1 time per minute. The Auto Restart option is
available via the web interface in the Special Function section. To use this
function, it is necessary to enter the IP address of the camera. Make sure your
camera responds to PING (see the Configuration Manual).
The switch continuously monitors the speed on the port the camera is
connected to. If the flow speed goes below the established limit and fails to
restore, the switch makes a decision that the camera is hanging and reboots it.
The user may specify the limit values (see the Configuration Manual).
3.10.3 Cable tester
The switch has the functions of a virtual cable tester (VCT), which allows to
determine the breakage of the twisted pair, short-circuiting the wires of the
twisted pair, unconnected cable to the camera, the distance from the switch to
the fault. The cable tester diagnoses pairs that transmit data (
1, 2
and
3, 6
).
Note that the accuracy of the cable tester is
± 2 meters
.
Video camera restart using Link signal
Camera restart due to no response to Ping request
Camera restart in case of port speed reduction
