We are using Quectel BC660K Module for one of our project.
The normal workflow is as below,
The Device registers with network for 1st connect & then later on it enters into PSM.
And then the device keeps existing from PSM, transmits the data & enters back into PSM.
The Data transfer is once in a day & and rest period it remains in PSM.
If due to any reason, at the wakeup if operator is not available or the IP context/IP address is not available, then the device tries to re-register on the network & completes the Data transfer after successful registration.
During this, we have observed that there are cases, where the device is creating a session on Cellular Network, but no data transfer is done.
The logs from Cellular Network Provider & also the Wire Shark logs captured by Cellular Provider as attached
0_byte_logs.zip (18.0 KB)
Can you please analyze these logs & confirm the reason for the failure to transmit/transfer the data?