EC21 tx buffer size

Hi,

What is the EC21 module’s tx buffer size and how much data can it retain in poor LTE network conditions?
Currently I’m sending data in transparent mode and expriencing a lot of packet loss during TCP communication.

What is the EC21 module’s tx buffer size and
10k

how much data can it retain in poor LTE network conditions?
This doesn’t have a specific value

Currently I’m sending data in transparent mode and expriencing a lot of packet loss during TCP
You can run AT+QENG=“SERVINGCELL” to query the current network status.