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10.7
Common Trouble Cases
Table 10 - 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.
2. If you saw “POST MODE” on the device screen, the device system
image has been damaged. Please refer to the instructions in “
10.6
Entering Post Mode and Recover System Image
” to restore the
system image.
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. If the cable is not well connected to the network
icon
[WAN disconnected] will be flashing in the middle of the
screen.
2. Please check if the device has an IP address. Check the system
information, if the IP displays “Negotiating…”, 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 “10.6
Network Packet 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 headset is damage?
2. The network bandwidth and delay may be not suitable for audio call at
the moment.
Poor Audio or Low
Volume in Headphone
1. There are two Headphone wire sequence in the market. Please use the
Headphone provided, or consult the wire sequence if you wish to use a
third party headphone.
2. The network bandwidth and delay may be not suitable for audio call at
the moment.