Hi, the flow is like this:
[JASMIN GW] <--- SMPP Protocol converter ---> Hypermedia o other brand GSM GATEWAY
the project Kannel, do something similar with AT based command directly on Modems Cellular.
In this case, it can be a start point, but the diferences of the set of commands for the gateway.
Other point will be consume directly from the RabbitMQ queue, but then, will be missed the managment features from jasmin for routing or interception.
Regards,