Hi, I need to make calls from a mobile number that can be answered by Freeswitch extension playing an IVR. To achieve this, I have configured a VOIP-GSM gateway having inserted a mobile sim that upon receiving the incoming calls forwards it to a SIP URI. Gateway Settings: PBX IP : ec2 public ip Protocol : SIP Port : 5080 Target: 9811806537 Freesswitch resides at Amazon ec2 cloud, Dialplan for public context is : <extension name="mydid"> <condition field="destination_number" expression="^(9811806537)$"> <action application="transfer" data="4444 XML default"/> </condition> </extension> Default Context : <extension name="ivr_demo"> <condition field="destination_number" expression="^4444$"> <action application="answer"/> <action application="start_dtmf" /> <action application="sleep" data="2000"/> <action application="ivr" data="rhd_ivr"/> </condition> </extension> where Server IP - XX.XX.XX.XX Gateway IP- YY.YY.YY.YY Freeswitch logs can be found here : http://pastebin.com/7BbM5dWD <http://pastebin.com/i4gs9uVJ> Files sip_profiles/external.xml sip_profiles/internal.xml <param name="ext-rtp-ip" value="XX.XX.XX.XX"/> <param name="ext-sip-ip" value="XX.XX.XX.XX"/> Any pointer to move forward would be highly appreciated Reagrds, Deepika