Asterisk PBX Dial Plan Compiler

Good evening.
Has anyone been able to dial from an analog line into a remote trunk on the other side of a remote asterisk box
x=call1
y=remote phone
a=*1 server
b=*2 server

so this is he route of the call
x>a-b<y

I can get to my servers by dialing a prefix number but have not been able to bridge the dialplans together. This would or should allow me to dial just a remote extension and get connected.

That is the first step.
It seems straight forward, but what I have tried so far has failed.
I used voip-info for the duel servers example one, I have not tried examples two and three. Has anyone else found or comleted this process?