Hi, I am running freeswitch on EC2 medium instance with following configuration: Freeswitch Version: 1.2.53 Uname string: Linux freeswitch 3.2.0-27-virtual #43-Ubuntu SMP Fri Jul 6 14:45:58 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux When I am checking the status of my configured profile, I am getting following stats: freeswitch@localhost@internal> sofia status profile mgprofile ================================================================================================= Name mgprofile Domain Name N/A Auto-NAT false DBName sofia_reg_mgprofile Pres Hosts Dialplan XML Context incoming Challenge Realm auto_to RTP-IP 10.113.51.12 Ext-RTP-IP 54.225.73.72 SIP-IP 10.113.51.12 Ext-SIP-IP 54.225.73.72 URL sip:mod_sofia@54.225.73.72:5060 BIND-URL sip:mod_sofia@54.225.73.72:5060;maddr=10.113.51.12 HOLD-MUSIC local_stream://moh OUTBOUND-PROXY N/A CODECS IN PCMU CODECS OUT PCMU TEL-EVENT 101 DTMF-MODE rfc2833 CNG 13 SESSION-TO 0 MAX-DIALOG 0 NOMEDIA false LATE-NEG true PROXY-MEDIA false ZRTP-PASSTHRU true AGGRESSIVENAT false STUN-ENABLED true STUN-AUTO-DISABLE false CALLS-IN 649 FAILED-CALLS-IN 255 CALLS-OUT 531 FAILED-CALLS-OUT 37 REGISTRATIONS 0 Why are so many calls failing? What could be the issue? -- Thanks and Regards, Ashwin Jain