Is it possible to integrate LSO 600 with an external system without SAP PI?

Hi,

as asked in the title, i am wondering if it is possible to integrate LSO 600 with an external (non-SAP) system without using SAP PI/XI. The external system is a middleware application which can handle RFC functions, IDocs besides the usual web service communications.

However, i don't know how LSO and SAP PI are integrated so i wonder if their interfaces are such that instead of SAP PI another middleware could be used.