Hi, i'm trying to use mod_sms. i did the following steps 1 - used the instructions here to compile the module http://wiki.freeswitch.org/wiki/Mod_sms#Args https://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_chat created two users on both servers x.x.x.1, x.x.x.2 <domain name="x.x.x.1"> <user id="2222"> <params> <param name="password" value="2222"/> </params> </user> </domain> <domain name="x.x.x.1"> <user id="1111"> <params> <param name="password" value="1111"/> </params> </user> </domain> created this chatplan: public.xml: <?xml version="1.0" encoding="utf-8"?> <include> <context name="public"> <extension name="public"> <condition field="to" expression="^(.*)$"> <action application="log" data="INFO to_chat remote"/> <action application="reply" data="Hello, you said: ${_body}"/> </condition> </extension> </context> </include> but now when i send this from server x.x.x.2 freeswitch@internal> chat sip|2222@x.x.x.2|external/sip:1111@x.x.x.1|hi from freeswitch snabel is here Sent i get the following on server x.x.x.1 2014-09-03 11:18:18.780102 [INFO] mod_sms.c:336 Processing text message 2222->1111 in context public Chatplan: 1111 parsing [public->public] continue=false Chatplan: 1111@x.x.x.1 Regex (PASS) [public] to(1111@x.x.x.1) =~ /^(.*)$/ break=on-false Chatplan: 1111@x.x.x.1 Action log(INFO to_chat remote) Chatplan: 1111@x.x.x.1 Action reply(Hello, you said: ${_body}) *2014-09-03 11:18:18.780102 [ERR] switch_loadable_module.c:769 Invalid chat application interface [log]!* what does it mean? what did i miss? Thanks, Snabel