HL7800-M not connecting to network outside EU

IoT Modules HL78
1

Hello,
We have an HL7800-M that we use on LTE-M1 networks. The hardware works very well in the EU region(Netherlands, Belgium, Spain, and Denmark) to name a few.
We have currently shipped the hardware to Italy, Canada, Thailand, Chile, and the USA. In these regions, the devices do not seem to connect to the networks. Unfortunately, we do not have logs from these regions yet but we will have them down the line. This has been tried with two different SIM cards, one is an e-sim which is with Onomondo, and another one is a physical sim which is Telenor, but on roaming.

I would like to understand, what things I would need to take care of such that it would work in most of these regions. We are using band 20 for the first search but if the network is unable to connect, then the device is set to search on all bands.

Carrier: Onomondo
Modem: HL7800-M.4.7.1
FW: HL78xx.4.7.1.0.RK_02_01_02_00_153.20230620

2

Hi @vedant,

Welcome to our community!

  • Currently, are you able to send AT commands to mentioned modules?
  • If you are setting band 20, try setting it to All bands to see if it can access the network.
Examples:

AT+KBNDCFG=? // Get supported network bands
+KBNDCFG: 0,0002000000000F0F1B9F 	// bands 1, 2, 3, 4, 5, 8, 9, 10, 12, 13,
									// 17, 18, 19, 20, 25, 26, 27, 28, 66
									// for CAT-M1
+KBNDCFG: 1,0002000000000B0F189F 	// bands 1, 2, 3, 4, 5, 8, 12, 13, 17,
									// 18, 19, 20, 25, 26, 28, 66 for NB-IoT
+KBNDCFG: 2,6
OK

AT+KBNDCFG=0,0002000000000F0F1B9F
AT+CFUN=1,1
  • Additionally, to be sure, please contact Onomondo and Telenor to find out which bands their networks support for Cat-M.

Thanks,