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8 FAQ
1. Question: Press the call key; the indicator light turns on, but VTO doesn’t call?
Answer: Please confirm validity of this call again.
2. Question: How can I hang up?
Answer: Please press buttons on the VTO, and VTO will send corresponding prompt tone.
3. Question: There is no sound or light, and it doesn’t start. How can I deal with it?
Answer: Check whether power supply is normal, and whether socket is in good contact.
4. Question: It prompts that the call is unreachable. How can I deal with it?
Answer: Network failure. Please check whether network cable between this device and
extension is inserted in place, and whether VTH is registered at VTO.
5. Question: Voice is too low. How can I deal with it?
Answer: Please adjust VTO volume and VTH talk volume according to actual conditions.
6. Question: The device fails to boot up. How can I deal with it?
Answer: Please check whether power supply of VTO and VTH is normal.
7. Question: VTH has no video or video quality is poor. How can I deal with it?
Answer: VTO WEB interface switches to WVGA video format. Please don’t put VTO at places
with unideal ray of light or with direct exposure to sunlight.
8. Question: The device fails to unlock. How can I deal with it?
Answer: Please check whether connecting line of VTO access module loosens, and whether
electrical control lock breaks down (incorrect wiring, no voltage output or low voltage output).
9. Question: How can I deal with problems that are not confirmed or cannot be solved?
Answer: Please consult professional technical support.
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