Hi,
I’m trying to open a HTTP connection with the LTE/GSM modem GL7600. Following the example of section 18.8 in the HL76xx AT Commands Guide I repeatedly got errors like this
I noticed that after switching to “GSM only” mode with AT+KSRAT=1 the problem is gone:
AT+KHTTPCFG=1,“xyz.de”,80,0
+KHTTPCFG: 1
OK
+KCNX_IND: 1,4,1
+KCNX_IND: 1,1,0
+KHTTP_IND: 1,1
After switching back to LTE mode it still works until I restart the modem.
Is this the wrong way to establish an HTTP connection via LTE?
I saw that some other users had similar problems but I couldn’t find a useful answer.
I had configured the GPRS connection with
AT+KCNXCFG=1,“GPRS”,“TM”
Is this only valid for 2G networks?
Is +CGDCONT the right command for 4G?
+KCNXCFG and +CGDCONT seem to do more or less the same. Both have APN, login, password and IP addresses as parameters. Do I need both commands to support 2G and 4G?
An example of a fuctioning HTTP connection would be appreciated.
Which firmware version are you using? If you are not on the latest firmware, please download the latest one 2.27 version and retry.
Please perform and share with me the output of the following AT command:
ATI3
AT+CGMM
AT+CFUN=1,1
AT+CREG?
AT+CEREG?
AT+COPS?
AT+CGDCONT?
AT+KCNXCFG=1,“GPRS”,“your APN”
AT+KCNXCFG?
AT+KHTTPCFG=1,“xyz.de”,80
my modems run with FW ver. 2.23.
After USB connection (normally I use it in RS-232 mode) it was detected as
USB composite device.
Then I started the firmware file
HL769x.2.27.183100.201809071813.x7120m_3_signed_exe.exe
which ends with the attached window. After reboot the firmware is still 2.23. Did I miss something?
I also tried to install FlashUSB_Driver_1_0_1_1-1 which ended with a Registry Error (flashusb.cat is used by another process).
I can upgrade to firmware version 2.27 HL7692 successfully on my device.
You can try upgrading it on another PC.
Does the issue occur on a specific GL7600 device or all GL7600 devices?
