Ciao Benny, > So perhaps at some point you'd have to partition the application so that each > instance will handle smaller amounts of calls. Can you please tell me the maximum number of calls that I can make? With only 5 calls, I get these error messages: 2000 is calling 2005 Call with sip:2005 at 192.168.1.90 is CALLING last code = 0 () 2001 is calling 2006 Call with sip:2006 at 192.168.1.90 is CALLING last code = 0 () 2002 is calling 2007 Call with sip:2007 at 192.168.1.90 is CALLING last code = 0 () 2003 is calling 2008 Call with sip:2008 at 192.168.1.90 is CALLING last code = 0 () 2004 is calling 2009 09:24:33.268 pjsua_call.c Error making file: Too many objects of the specified type (PJ_ETOOMANY) [status=70010] Eccezione: Object: {Account sip:2004 at 192.168.1.90}, operation=make_call(), error=Too many objects of the specified type (PJ_ETOOMANY) Call with sip:2005 at 192.168.1.90 is CALLING last code = 0 () Call with sip:2006 at 192.168.1.90 is CALLING last code = 0 () Call with sip:2007 at 192.168.1.90 is CALLING last code = 0 () Call with sip:2008 at 192.168.1.90 is CALLING last code = 0 () Call with sip:2005 at 192.168.1.90 is DISCONNCTD last code = 487 (Request Terminated) Call with sip:2006 at 192.168.1.90 is DISCONNCTD last code = 487 (Request Terminated) 09:24:33.814 pjsua_call.c Error initializing media channel: Object is busy (PJ_EBUSY) [status=70011] I included some output from my app (derived from registration.py) in order to make clear what I'm doing. TIA, Andrea -- Dr. Andrea Spadaccini Multimedia Technologies Institute - MTI S.r.l. Web: www.x-voice.it - Tel: +39 (0) 95 7224945