Dell DW5821e Foxconn T77W968 in LTE18 kit(LHGGM)

[Vasily]

I installed the modem Dell DW5821e Foxconn T77W968 on the device LTE18 kit(LHGGM), it was detected, it's listed in the resources, and it has an LTE1 interface. But it's inactive and doesn't work. How to make it work?

[daensky]

Had this problem in LHGG LTE6, solution:

LHGGR+ Telit LM940

With the help of support and some trial error there is a solution to this. Modem makes to many endpoints and can’t be mounted, to fix you have to use AT commands outside of the LHGGR ”AT+GPS=0” - turning off GPS This will turn off GPS and reduce mount-points and in the end the LHGGR will mount the modem and everything will start working. So for everyone with a LHGGR and a DW5821e/DW5821esim/T77W968 modem, disable GPS on the modem.

[ortazebra]

It can be in FTM mode.

[Vasily]

Thanks, it worked. The modem connects now. The only thing left to figure out is SINR, RSRP, and RSRQ. They're not displayed anywhere.

[daensky]

It won't display those in the interface menu, they are visible when you use:

interface/lte/at-chat lte1 input="at^debug?"

[Vasily]

He doesn't have such a command. Output: error, also AT+VZRSRQ is error

[Vasily]

After some time, the modem started acting strangely when paired with LTE 8. After rebooting, the LTE interface comes up (an IP address is assigned by the operator), but there's no internet (not even the operator's DNS can be pinged). The only solution is removing the IMEI from the modem and performing a soft reset.