User Manual

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10.4 Common Trouble Cases
Table 9 - Trouble Cases
Trouble Case
Solution
Device could not boot up
1. The device is powered by external power supply via power
adapter or PoE switch. Please use standard power adapter
provided or PoE switch met with the specification requirements
and check if device is well connected to power source
Device could not register to
a service provider
1. Please check if device is well connected to the network. The
network Ethernet cable should be connected to the
[Network] port NOT the [PC] port.
2. Pick up the handset or press hands-free key, and input “# * 111”
botton, then Checking the IP address information. If the device
does not have an IP address, Please check if the network
configurations is correct.
3. If network connection is fine, please check again your line
configurations. If all configurations are correct, please kindly
contact your service provider to get support, or follow the
instructions in “10.3 Network Packets Capture” to get the
network packet capture of registration process and send it to
support to analyze the issue.
No Audio or Poor Audio in
Handset
1. Please check if Handset correct is connected.
2. The network bandwidth and delay may be not suitable for audio
call at the moment.
Audio is chopping at
far-end in Hands-free
speaker mode
This is usually due to loud volume feedback from speaker to
microphone. Please lower down the speaker volume a little bit, the
chopping will be gone.