Firmware and band settings for PTCRB certification?

IoT Modules WP Series
1

Hi Everyone,
We’re currently preparing a couple of our WP7702-based products for PTCRB certification (in order to get AT&T certification) and the lab has told me that the device should only operate on bands 2, 4 and 12.

The problem I’m having is that when I try and set the bands using the AT*PSRDBS=1,269745176 (which is the three bands combined), I get an ERROR response. In fact, any band results in an ERROR.

The manual suggests that my RAT settings could have an impact on this, so I changed it from 12 (GSM and LTE) to 06 (LTE ONLY) and finally 00 (Auto) with the same ERROR results.

I have tried the PTCRB and Generic (Sierra wireless) versions of firmware to no avail.

Does anyone know how to limit the device to bands 2, 4 and 12 successfully?

Thanks in advance!

2

have you tried to use AT!BAND command?

3

I hadn’t ried the AT!BAND until now. I think I have it correct. I created a new index called “PTCRB” and masked out all other bands:

at!band=10,“PTCRB”,0000000000000000,000000000000080A

AT*PSRDBS? now gives:

*PSRDBS: 269746176

Which is correct :slightly_smiling_face:
Thanks for the help!