Solution : https://service.sap.com/sap/support/notes/502562 (SAP Service marketplace login required)
Key words : 
file <ipc installation>/lib/properties/parameters, <ipc installation>/bin/ipcserver1out, rfc-working-directory/dev_rfc, create rfc trace files, automatically started servers, trace files, prerequisites ipc 3, ipc server, rfc_trace_dir=<directory>, ipc services
Related Notes : 
       
| 176277 | Generating RFC trace information | 
| 65325 | Error files and trace files for Remote Function Call (RFC) | 
| 40024 | Transferring customer files to sapserv# using ftp |