Hi, i'm trying to configure freeswitch with a VOIP provider, exsorsa, that uses OpenSER. Exsorsa use as own gateway, another provider, Eutelia, that it uses Cisco (or, at least, this appears in headers). Short story: ------------ If i try to setup my Eutelia account all works perfectly while if i try to setup Exsorsa account registration works fine while calling not: when fs send the ACK, as answer to a OK (sip code 200), that is sended from exsorsa as answer to an INVITE, exsorsa send back a BYE. Long story: ----------- I put call log on pastebin with debug and sip_trace enabled for external sip_profile and with log level on debug on fs console. Registration log, here all is ok (or at least it seems to be ok) http://pastebin.freeswitch.org/11176 Annoyng message that comes up every 30 seconds http://pastebin.freeswitch.org/11177 Call log http://pastebin.freeswitch.org/11178 As you can see from call log all works fine until fs send back the acknowledgment message (line 451 on last log). Can this depend on the annoyng message that comes up every 30 seconds? Here my external sip profile config http://pastebin.freeswitch.org/11180 while here exsorsa gateway config http://pastebin.freeswitch.org/11181 Any helps is really appreciated! I'm fought with it all the day!!! Best Regards, Daniele