EC25, TCP/IP data receiving

I use EC25 to send and receive data through TCP/IP communication with the server.
Typically, the AT+QIRD=0,1500 command is used to read data.

I am trying to receive about 1Mbyte of data from the server, but the server seems to fail midway while sending data.
Is it beyond the buffer the EC25 can receive?
How much data can the EC25 receive and store? size of buffer

You can also use transparent access mode for cross validation

Hi Herbert,

I try with Transparent access mode,
I read the data using uart, but some data is broken…
What do I check?