LTE TDD and FDD mode

IoT Modules MC/EM Series
1

Hello,

I am using a MC7455 module and I would like to know how to switch between LTE FDD and LTE TDD.
There is an AT command for that ?
The goal is to be able to test the two modes. I saw into the AT command reference document that we have to use a "call box " to test the LTE what is that ?

Thank you,

Arthur

2

Hi Arthur,

You don’t have to switch between TDD and FDD.
The MC7455 only supports B41 TDD. Just setup a callbox for B41 TDD and the modem will attach to it.
BW should be between 5 and 20MHz ( please read the PTS)
https://source.sierrawireless.com/resources/airprime/minicard/74xx/airprime_mc7455_product_technical_specification/

"I saw into the AT command reference document that we have to use a “call box " to test the LTE what is that ?”
Callboxes are simulating LTE NTWKs for example R&S’ CMW500 or Amarisoft.

Thanks,
James