Deactivate auto sleep mode
AT+QSCLK=0
Persistent setup
Set the band to band 8 (900 MHz) for Deutsche Telekom NB-IoT
AT+QBAND=1,8
Turn off the radio.
AT+CFUN=0
Set the APN
AT*MCGDEFCONT="IP","cdp.iot.t-mobile.nl"
Restart the module as some configurations only take place after a reboot.
AT+QRST=1
After reboot automatic dial-in to the network
F1: 0000 0000
V0: 0000 0000 [0001]
00: 0006 000C
01: 0000 0000
U0: 0000 0001 [0000]
T0: 0000 00B4
Leaving the BROM
AT+QSCLK=0
OK
+IP: 10.128.1.137
Open UDP socket and send message
Open the UDP socket to server
AT+QIOPEN=1,1,"UDP", "172.27.131.100",15683,1001,0,0
OK
+QIOPEN: 1,565
Get the last error with description
AT+QIGETERROR
+QIGETERROR: 565,dns parse failed
OK
The return from AT+QIOPEN should be +QIOPEN: 1,0
Many many thanks for your help!
Regards, Roland