Microhard Bullet LTE - SMS Forwarding to Local Network?

We have a Microhard Bullet LTE deployed on a remote site. Able to SSH into the device and read SMS messages, send SMS messages, etc. But the commands seem rather limited (e.g. it's like your typical Linux commands are disabled). Our intent is to be able to issue custom commands/payloads to the device via SMS which it can then forward to specific host names which are DHCP'd on a 12 hour cycle. It is desirable to do this via SMS because it is quickly performed while operators are on the road.

Just wondering if anyone has any ideas or work arounds for how to achieve this. The only thing I can really think of (with my limited experience) is to get a bash script going on a separate machine on the network which will SSH into the device, read the most recent message, and then relay accordingly. Although my intuition tells me this is inefficient, despite being simple.