No, it's clearly being enumerated properly, but you have ucom[0-2], so you'll need to discover which one is accepting AT commands.
You can use
cu(1)/
tip(1) to send raw commands,
ATI should return something on one or more of the devices..
Just in case you're not sure what the device nodes are:
/dev/cuaU0
/dev/cuaU1
/dev/cuaU2
Once you've figured that out, you'll need to establish a PPP connection, I don't really know much about these devices.