Yealink T58A

| Troubleshooting Solutions | 114
•
Check network configuration via the phone user interface at the path > Settings > Device Settings
> Network(default password: admin) > WAN Port > IPv4 Type( or IPv6). If the Static IP is selected,
select DHCP instead.
Specific format in configuring IPv6 on Yealink devices
Scenario 1:
If the device obtains the IPv6 address, the format of the URL to access the web user interface
is “[IPv6 address]” or “http(s)://[IPv6 address]”. For example, if the IPv6 address of your device is
“fe80::204:13ff:fe30:10e”, you can enter the URL (for example, “[fe80::204:13ff:fe30:10e]” or “http(s)://
[fe80::204:13ff:fe30:10e])” in the address bar of a web browser on your PC to access the web user
interface.
Scenario 2:
Yealink devices support using FTP, TFTP, HTTP, and HTTPS protocols to download configuration files or
resource files. You can use one of these protocols for provisioning.
When provisioning your device to obtain an IPv6 address, the provisioning server should support
IPv6 and the format of the access URL of the provisioning server can be “tftp://[IPv6 address or domain
name]”. For example, if the provisioning server address is “2001:250:1801::1”, the access URL of the
provisioning server can be “tftp://[2001:250:1801::1]/”. For more information on provisioning, refer to
Yealink_Teams_HD_IP_Phones_Auto_Provisioning_Guide.
Time and Date Issues
• Display time and date incorrectly
Display time and date incorrectly
Check if the device is configured to obtain the time and date from the NTP server automatically. If your
device is unable to access the NTP server, configure the time and date manually.
Display Issues
• The device LCD screen blank
• The device displays “Offline”
The device LCD screen blank
Do one of the following:
• Ensure that the device is properly plugged into a functional AC outlet.
• Ensure that the device is plugged into a socket controlled by a switch that is on.
• If the device is plugged into a power strip, plug it directly into a wall outlet.
• If your device is PoE powered, ensure that you are using a PoE-compliant switch or hub.
The device displays “Offline”
The device displays “Offline” when there is no available network on the device. Ensure that your device has
connected to the wired network.