Data transfer issues
What to do if the device is online, but not sending data.
I see unusual spikes / drops in data usage on a SIM.This is often related to communication happening in the packet layer between device and server. Use Traffic Monitor to investigate further.
The device has attached data connection, but I am not receiving any dataReview device configuration.
I see 0 byte sessions when using NB-IoTWhen the device is attached to NB-IoT there is no data in the data sessions on the platform make sure to check that ePCO is disabled.
SIM with connector is online, but I cannot receive data.Check for server misconfigurations or missing connector passthrough settings.
Traffic Monitor displays packets larger than 1360 bytes, despite exceeding max MTU sizePackets larger than 1360 bytes may be fragmented on the way to Onomondo PGW, but displayed in the Monitor as single packets.
I cannot establish an FTP connection from my deviceMake sure FTP servers are set up in "Passive" mode for the device to establish a connection
How to test Mobile Terminated (MT) traffic on the Onomondo network?There are multiple options to test MT traffic and maintain the NAT mapping.
Why is my device receiving packets when it is offline/deactivated?The most common reason is an OpenVPN connection is still trying to communicate with it. Check the user page to see who owns the IP address.
What is a zero-byte session?A zero-byte session occurs when a device starts a data session but transmits no user data.