M95 transmit buffer size

IoT Modules GSM Module
1

Hi!

I wasn’t able to find anywhere in the documentation information regarding M95 transmit buffer size. How large it is?

Thank you!

2

Hi Urbant:
Which transmit buffer size do you mean?Do you mean the buffer size for TCP Uploads and downloads?

3

Hi,

Yes I mean TCP send buffer. The one which is going to be used when using AT+QISEND command.

Thank you!

4

Hi ,
The TCP send buffer size is 1460 in non-transparent mode.

5

Hi,

But this is the maximum size for a single QISEND command as described in AT M95 Command manual. But I’m asking about the global send buffer. If I check status using QISACK I can see that sometimes number of un-acknowledged bytes can be as large as 4000. This means that send buffer is actually larger than 1460.

Are you sure that TCP send buffer size is still 1460?