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AX-112 Analog Telephone Adapter 25
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Chapter 5 - Troubleshooting
5.1 General Troubleshooting
5. Troubleshooting
There is no LED activity at power on.
• Check that the power supply unit (PSU) is properly connected.
• Check if the ‘Phone default connect to’ option at ‘Advanced’ setting page. If it
were set to “PSTN’ and your PSTN line is not wired properly (without voltage
presented), then there will be no dialing tone at all. If you have no PSTN line
connected to the AX-112 line port, please set the ‘Phone default connect to’
option to “FXS”.
5.2 Network Troubleshooting
General network activity problems. The device does not appear to be
performing any network related functions.
• For Ethernet devices, make sure that the Ethernet connection is secure, and
the Ethernet cable quality is good.
• Try pinging the device’s IP address from any Unix or Windows machine
connected to the same network.
Input: ping www.xxx.yyy.zzz [Enter]
(where www.xxx.yyy.zzz is the IP address of the unit).
The automatic DNS discovery process for a VoIP server does not
appear to work.
• Ensure that the DNS server is capable of servicing DNS TXT or SRV
queries, and that it is configured to respond with the correct server
information when queried.
• If the device is configured via DHCP, ensure that the DHCP server has provided
the correct DNS server and the domain name information.