TRB140 cannot send sms

NETWORKING SOLUTIONS
1

Hi all

I have a new TRB140 with which I am not able to send sms with via CLI or Web. I contacted my carrier and made sure my contract is allowed to send sms, which it is.

Any help to get this working is being appreciated! Below you can find system information and command outputs which I found during my research.

EDIT:
I do not know much about GSM codes and commands. The only difference I noticed is the used command AT+CMGS=22 and on a older modem currently active it is AT+CMGS=23

Mobile Connection

  • VoLTE: off
  • Preferred network type: 4G/3G/2G auto (all tested individually already)
  • Band selection: Auto

Connection

  • Operator: Telekom.de
  • Operator state: Registered, home
  • Data connection state: Connected
  • Connection stage: Setup complete
  • Network type: 4G (LTE)
  • IP address: […]

Firmware

  • Firmware version: TRB1_R_00.07.09.1
  • Firmware build date: 2024-09-12 07:35:43
  • Internal modem firmware version: EC25EUGAR06A09M4G_01.200.00.000
  • Kernel version: 5.4.279

Command outputs

root@device:~# ubus call gsm.modem0 send_sms '{"number":"+491234567890","text":"ubustest"}'                                     
{                                                                                                                               
        "request": "AT+CMGS=22\r0011000D91946190096060F80000FF0875717D4E2FCFE9\u001a\r",                                        
        "response": "\r\n> \r\n+CMS ERROR: unknown error\r\n",                                                                  
        "errno": 5,                                                                                                             
        "error": "Invalid response"                                                                                             
} 

root@device:~# gsmctl -A 'at+csca?'                                                                                              
+CSCA: "+491710760000",145     

root@device:~# gsmctl -A 'at+qcfg="servicedomain"'                                                                               
+QCFG: "servicedomain",2 

root@device:~# gsmctl -A 'at+qcfg="nwscanmode"'                                                                                  
+QCFG: "nwscanmode",0  

root@ALZ20:~# gsmctl --debug --sms --send "+491234567890 Test123"                                                              
GSMCTL modem[0]: Debug mode enabled                                                                                             
GSMCTL Modem id: 0                                                                                                              
GSMCTL modem[0]: Calling Send SMS                                                                                               
GSMCTL modem[0] SMS: Checking input format                                                                                      
GSMCTL modem[0] SMS: Calling LGSM SEND SMS                                                                                      
[gsmctl_send_sms:22] error: ERROR: Failed to parse response
3

Hello,

Have you tried sending an SMS with gsmctl -S -s, "<NUMBER> <TEXT>"?

Additionally, please check our wiki pages regarding the use of gsmctl here: AT Commands - Teltonika Networks Wiki

Best regards,

4

Hi, yes you can see the output in my first post. I am not able to send sms with any command used.

5

Have you tried using the same SIM card in another device, such as a phone, to send an SMS? Was it successful?

Best regards,

6

Hey

The same sim card was working in another device last tested. I will have physical access to the TRB device on friday and can test it again just to confirm if you like.

7

I kindly ask you to replicate the issue and download a troubleshoot file. I have sent you a form to fill out; once completed, I will contact you privately regarding this. For the ticket ID, please use “9299”.

Best regards,

8

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