Send SMS via HTTP or CMD with RUT901 – Is it possible?

[MatasR]

Hello,

Starting from firmware 00.07.14.0, the POST/GET services were completely withdrawn. You can find more details on this change here:

Implementation of Read-Only System Files and Mobile and I/O POST/GET Service Removal with RutOS 7.14

Dear community, We would like to inform you that with the release of RutOS version 7.14 in Q2 2025, devices will implement read-only permissions for critical system files by default. This change enhances security and system stability but may impact users performing non-standard operations. Additionally, with RutOS 7.14, support for the POST/GET service will be discontinued to strengthen security. Device functionality will remain accessible through alternative methods. For more details, please…

Is there any way on the RUT901 to send SMS via HTTP/API, even if it’s undocumented or requires enabling a specific package?
You can utilize the API requests; More information specifically on sending SMS messages can be found here: https://developers.teltonika-networks.com/reference/trb500/7.14.3/v1.6.3/messages#post-messages-actions-send

Alternatively, is there any way to send an SMS via command line / SSH / curl, using internal commands or scripts?
You can do the API requests via SSH, you can utilize AT commands as well: AT Commands - Teltonika Networks Wiki

Regards,
M.