Hi All I am using Freeswitch 1.0.6 with Vitelity as inbound/outbound provider. My Inbound calls route properly to extension 1000, however, the caller does not hear the extension ringing. The extension at 1000 does ring however and once I pick up the call, the conversation proceeds normally. I just can't figure out why the caller hears silence during phone ringing. I have tried putting instant_ringback in dialplan/public.xml: <extension name="vitel-inbound"> <condition field="destination_number" expression=""> <action application="set" data="instant_ringback=true"/> <action application="transfer" data="1000 XML default"/> </condition> </extension> The log lines during inbound calls show: 2010-06-02 07:55:15.913827 [NOTICE] mod_sofia.c:1992 Pre-Answer sofia/external/7816409134@64.2.142.15! 2010-06-02 07:55:15.916855 [DEBUG] switch_core_session.c:703 Send signal sofia/internal/sip:1000@172.168.128.193:5060 [BREAK] 2010-06-02 07:55:15.916855 [DEBUG] sofia.c:4167 Channel sofia/external/ 2123135987@64.2.142.15 skipping state [early][183] 2010-06-02 07:55:15.916855 [DEBUG] switch_core_session.c:642 Send signal sofia/external/2123135987@64.2.142.15 [BREAK] 2010-06-02 07:55:15.916855 [DEBUG] switch_ivr_originate.c:1124 Raw Codec Activation Success L16@8000hz 1 channel 20ms 2010-06-02 07:55:15.916855 [DEBUG] switch_core_codec.c:122 sofia/external/ 2123135987@64.2.142.15 Push codec L16:10 2010-06-02 07:55:15.916855 [DEBUG] switch_ivr_originate.c:1189 Play Ringback Tone [%(2000,4000,440.0,480.0)] 2010-06-02 07:55:15.922793 [DEBUG] sofia.c:4172 Channel sofia/internal/ sip:1000@172.168.128.193:5060 entering state [calling][0] 2010-06-02 07:55:15.981765 [DEBUG] sofia.c:5866 IP 64.2.142.15 Rejected by acl "domains". Falling back to Digest auth. 2010-06-02 07:55:15.984797 [WARNING] sofia_reg.c:1873 Can't find user [ prav_24.90.81.72@172.168.128.203] You must define a domain called '172.168.128.203' in your directory and add a user with the id="prav_24.90.81.72" attribute and you must configure your device to use the proper domain in it's authentication credentials. 2010-06-02 07:55:15.984797 [WARNING] sofia_reg.c:1033 SIP auth failure (INVITE) on sofia profile 'internal' for [5087203445@24.90.81.72] from ip 64.2.142.15 where 5087203445 is my inbound DID. Can someone please help decipher what the warning means and why there might not be any early media ringback.. thanks -Praveen