Trigger external webservice without using ABAP Stack

Hello,

I'm using PI 7.31 with dual stack.

I want to trigger an external webservice from the PI system and map the response of the webservice to a text file and send it to a nonSAP system.

Is it possible to schedule a trigger mechanism for the syncronous webservice within the adapter engine. (i.e not using any kind of proxy or some Z program scheduled within sm37 on the ABAP stack)