Please, follow the steps below what to check before you send the 2N® LiftIP device for repair:
a) device does not boot up after plug in
b) device is not reachable in the network/can not be found in the Network scanner
c) device is not working correctly, audio issues with microphone and/or speaker
add a) As a first step check out the LED signalisation and the electric installation of the device. This can be found here:
verify that the power source, either the PoE or External power source is working correctly
add b) verify the correct Ethernet cabling and also other network components. Try also a different device in the same network, on the LiftIP you can see SELECT and RESET button, by SELECT enter to the programming menu and listen to the ERROR code and check what does it mean here:
add c) verify a possible mechanical damage of the Speaker itself and check if there is no space between mic and speaker for possible echo.
Before you issue the RMA try also a reset of the device, either from programming Menu or a HW reset.
If you ask for RMA, where is obvious hardware damage, attach photos from the installation side, from the damaged part and another photo which could be important for RMA process.