Hi All. I was having a problem configuring a vono provider into my FreeSWITCH. Now its working. If someone had the same problem as me, here it's configuration. In external.xml file, insert the below line into settings: <param name="user-agent-string" value="FreeSWITCH Agent"/> Somehow, Vono Provider wont accept the default string that FreeSWITCH send. ex: FreeSWITCH-mod_sofia/1.0.head-git-db5f504 2011-07-17 17-00-38 -0400. and then, the vono.xml file: <include> <gateway name="vono"> <param name="username" value="[USERNAME]"/> <param name="realm" value="vono.net.br"/> <param name="password" value="[PASSWORD]"/> <param name="caller-id-in-from" value="false"/> <param name="extension" value="[USERNAME]"/> <param name="extension-in-contact" value="true"/> <param name="proxy" value="vono.net.br"/> <param name="register-proxy" value="201.86.87.2"/> <param name="expire-seconds" value="3600"/> <param name="register" value="true"/> </gateway> </include> Hope it helps someone. -- Leonardo Pires Bidinoto Voice Technology www.voicetechnology.com.br