Hello,
I'm attempting to power a Grandstream 2170 phone from the new MikroTik CRS112-8P-4S-IN 8 port switch. The datasheet for the phone states a power draw of 5.4W using 802.3af. I'm using the included power supply plugged into the 18-28V side. When I try the 48-57V side, all the ports flash red.
The log outputs:
poe-out, warning ether8 detected poe-out status: current_too_low
Is the 48POW a required purchase if using this switch with 802.3af devices?