If the device is left unused for a rather long time, disconnect it from the power
supply and unplug the power plug.
When there is smoke emitted from the device, or some abnormal noise or smell,
disconnect the device from the power supply, and unplug the power plug
immediately.
Contact the specified maintenance center for repair.
Do not insert any object into equipment slots that is not part of the
product or auxiliary product.
Before connecting a cable, connect the grounding cable of the device
first. Do not disconnect the grounding cable until you disconnect all other
cables.
Do not let a child play with the device or any accessory in case of accidental
swallowing.
Please use the accessories provided or authorized by the manufacturer only.
The power supply of the device shall meet the requirements of the input voltage of
the device. Please use the provided surge protection power socket only.
Before plugging or unplugging any cable, make sure that your hands are completely
dry.
Do not spill liquid of any kind on the product or use the equipment near water, for
example, near a bathtub, washbowl, kitchen sink, wet basement or near a swimming
pool.
During a thunderstorm, stop using the device and disconnect it from the power
supply. Unplug the power plug and the Asymmetric Digital Subscriber Line (ADSL)
twisted pair (the radio frequency cable) to avoid lightning strike.
Cleaning Requirements
Before cleaning the device, disconnect it from the power supply.
Use a piece of soft, dry and anti-static cloth to clean the device.
Keep the power plug clean and dry.
Troubleshooting
The unit cannot supply power to Yealink device.
There is a bad connection with the plug.
1. Clean the plug with a dry cloth.
2. Connect it to another wall outlet.
The usage environment is out of operating temperature range.
1. Use in the operating temperature range.
The cable between the unit and the Yealink device is connected incorrectly.
1. Connect the cable correctly.
You cannot connect the cable properly.
1. You may have connected a wrong Yealink device.
2. Use the correct power supply.
Some dust, etc., may be in the port.
1. Clean the port.
Contact your dealer or authorized service facility for any further questions.
FCC Statement
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation. Any Changes or modifications not expressly approved by the party responsible
for compliance could void the user's authority to operate the
equipment.
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