Troubleshooting LTE troubleshooting tree
Digi EX15 User Guide
58
Solid Green
3G connectivity confirmed Should the device be on 4G?
Yes
n Verify 4G coverage is available in the area.
n Check embedded cellular modem firmware. Does it match the
type of carrier?
n Check Modem section of Digi EX15 config. Verify Access
Technology is set to Auto.
n Contact carrier to verify SIM card supports 4G LTE. SIM card may
need a custom APN for 4G.
No
Test for Internet access on the device connected to the Digi EX15.
Online
Does the device has a usable IP Address?
n If no, see if the client device is expecting a publicly reachable
and/or static IP address, check the SIM card and the Modem
section of the Digi EX15 configuration to verify both are set up
with the proper APN.
Are there any ports that are required but cannot be accessed on
the client device? Also check if the IP Passthrough has been enabled.
n If yes, check the Services section of the configuration. Verify
none of the services are reserving the ports needed to access
the client device.
n If no, check the Firewall -> Port Forwarding section of the
configuration. Verify that the desired ports are forwarded to the
appropriate IP addresses.
Offline
Is the client device receiving a DHCP address from the Digi EX15?
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