Which LTE modules support CSD?

IoT Modules LTE Standard Module
1

Hello everyone,
I’m trying to find out which LTE modules are capable of working with Circuit Switched Data (CSD). So far, I’ve looked into Quectel EG915N-EA, EC25, EC200A, and EC21, but I couldn’t find any clear information about CSD support in their manuals.

Has anyone tested these modules or knows of LTE modules that definitely support CSD?

Thanks in advance for your help!

2

Dear @serg_serg ,

Thank You for reaching out to us,

On this case are trying to fallback from 4g to 3g/2g?.Can you confirm this?
Yes, some of our module can able to support WDCMA bands as well.

Thank you and Have a Great day!

3

Thank you for your response.
According to the technical requirements I have, I need to design an M2M device that can operate as a TCP server, work in LTE as well as 3G/2G networks, and must support Circuit Switched Data (CSD). In addition, dual SIM support is required; if the module itself does not support dual SIM, I can implement this separately using the FSA2567MPX. The target region for this device is Europe.

Could you please confirm if any of modules meet these requirements?

4

Which modules with LTE and 2G fallback still support GSM CSD??

5

Dear @Alvin295337
To clarify my requirement: I specifically need confirmation that your LTE modules with 2G fallback still support GSM Circuit Switched Data (CSD) when operating in GSM mode.

Could you please confirm which of your modules provide this functionality for the European region?