Quectel M65 module mqtt recieve error

Hello all,

I am using quectel m65 module for my project. Whenever i am trying to send a string from mqtt server to gsm module it is getting disconnected from network.

This is my sample string format:
**;AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA;##

When i send this the module gets disconnected(Netlight stops blinking).

WHEN I SEND STRING WITH LESS NO OF CHARACTERS IT IS GETTING RECIEVED PROPERLY.

Also what is the maximum size of buffer in this function?
static void mqtt_recv(u8* buffer,u32 length);
Please help
Thank you

Hi,
1.Do you use the Open module?
2. The size of this buffer is 2048 bytes

Yes
My string length is < 350 characters. Still getting same error.(in transmit as well)
Thank you

You can use the Standard module (No Open) test to see if the same situation occurs, and also to see if the server has restrictions on sending data

Thank you for you kind support