Hi! I’m having trouble connecting my uBlox c027 with LISA U200 cellular modem. It fails the join step with a PDP Authentication Failure. I’ll include the debug output below with the AT output for the failing step:
Modem::init
Device: LISA-U200
Power Save: Disabled
SIM: Ready
CCID: 8944500410165938991
IMEI: 352648069540078
IMSI: 234507095593899
Manufacturer: u-blox
Model: LISA-U200
Version: 22.90
Modem::register
Modem::netStatus
CSD Registration: Roaming
PSD Registration: Roaming
Access Technology: 3G
Signal Strength: -107 dBm
Bit Error Rate: 25
Operator: T-Mobile
Location Area Code: 09BB
Cell ID: 038F5CB6
Modem::join
12.593 AT send 12 "AT+CGATT=1\r\n"
12.653 AT read OK 6 "\r\nOK\r\n"
12.702 AT send 14 "AT+UPSND=0,8\r\n"
12.762 AT read + 17 "\r\n+UPSND: 0,8,0\r\n"
12.821 AT read OK 6 "\r\nOK\r\n"
12.878 AT send 23 "AT+UPSD=0,7,“0.0.0.0”\r\n"
12.938 AT read OK 6 "\r\nOK\r\n"
12.978 AT send 24 "AT+UPSD=0,1,“hologram”\r\n"
13.054 AT read OK 6 "\r\nOK\r\n"
13.104 AT send 15 "AT+UPSD=0,6,0\r\n"
13.164 AT read OK 6 "\r\nOK\r\n"
13.213 AT send 14 "AT+UPSDA=0,3\r\n"
15.764 AT read ERR 42 "\r\n+CME ERROR: PDP authentication failure\r\n"
15.846 AT send 15 "AT+UPSD=0,6,1\r\n"
15.906 AT read OK 6 "\r\nOK\r\n"
15.956 AT send 14 "AT+UPSDA=0,3\r\n"
18.606 AT read ERR 42 "\r\n+CME ERROR: PDP authentication failure\r\n"
18.689 AT send 15 "AT+UPSD=0,6,2\r\n"
18.749 AT read OK 6 "\r\nOK\r\n"
18.798 AT send 14 "AT+UPSDA=0,3\r\n"
22.429 AT read ERR 42 "\r\n+CME ERROR: PDP authentication failure\r\n"
Your modem APN/password/username may be wrong