Ciao Andrea, > I have to test an Asterisk installation, I'd like to run 500 softphones and > 100 concurrent calls, so the first thing to do for me was to register those > 500 softphones. Problem solved. I simply had to raise the PJSUA_MAX_ACC value in pjsip/include/pjsua-lib/pjsua.h. Now, on to the calls. :D HND, Andrea -- Dr. Andrea Spadaccini Multimedia Technologies Institute - MTI S.r.l. Web: www.x-voice.it - Tel: +39 (0) 95 7224945