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YML881Rev1 V110,V210P,V211,V220V110, V210P, V211, V220 User Guide
www.netcomm.com.au 63
COMMON PROBLEM AND SOLUTIONS
No power to the ATA.
• Please ensure that the power cable is connected correctly and
• The power switch is turn on. (Both at the power point and the power switch at the back of the unit).
Note: Only use the power adapter supplied with the NetComm ATA. A different adapter may damage the product.
ETH light is off.
• Please ensure that the ATA is connected to your broadband modem/router using the correct cable and
your computer is connected to the ATA.
No Dial Tone and the SIP light is off. Please check the following:
• The WAN port of the unit is configured correctly according to your network structure and
• The SIP is configured correctly according to your VSP (VoIP Service Provider). You have to ensure that all
details are entered correctly.
There is no sound coming from the phone handset.
• Please ensure that you phone handset is connected to the correct port (phone port) and the cable is not
damage.
When making a call, the call does not go through and always come with busy
tone.
• Check that the SIP light is on.
• Try to call a different number.
• If your broadband mode/router is not VoIP aware, you must set up port forwarding to allow the voice
traffic to go through the modem/router. There are certain ports that you need to specify, 5060-5061
(UDP) and 60000-60008 (UDP). Please consult your modem/router user guide for more information on
how to configure port forwarding.
The ATA never receives call and all incoming calls go directly to voice mail.
• Check that the SIP light is on.
• Try to call from a different number.
• If your broadband mode/router is not VoIP aware, you must set up port forwarding to allow the voice
traffic to go through the modem/router. There are certain ports that you need to specify, 5060-5061
(UDP) and 60000-60008 (UDP). Please consult your modem/router user guide for more information on
how to configure port forwarding.
• Ensure that your VoIP account supports incoming call from a PSTN number. Depending on your VSP, not
all VoIP account supports incoming calls from a PSTN/mobile number.