I am using 3 different SIP providers. 2 of them work just fine, but I have never managed to get the third one, telfort (NL) to work with Freeswitch. Here is my gateway definition: <gateway name="telfort"> <param name="username" value="020NNNNNNN"/> <param name="auth-username" value="020NNNNNNN"/> <param name="from-user" value="020NNNNNNN"/> <param name="realm" value="tel.telefoniedienst.nl"/> <param name="from-domain" value="tel.telefoniedienst.nl"/> <param name="proxy" value="sip.telefoniedienst.nl"/> <param name="password" value="XXXXXXX"/> </gateway> sofia status shows: external::telfort gateway sip:020NNNNNNN@sip.telefoniedienst.nl REGED but when I try to dial out on that provider, I get: 2013-02-17 18:04:19.216205 [NOTICE] sofia.c:6385 Hangup sofia/external/06MMMMMMMM [CS_EXCHANGE_MEDIA] [CALL_REJECTED] The strange thing is that everything works OK when I configure the parameters into the ADSL modem/gateway - a ZyXEL P-2601HN-F1: SIP Server Address: sip.telefoniedienst.nl Port: 5060 REGISTER Server Address: sip.telefoniedienst.nl Port: 5060 SIP Service Domain: tel.telefoniedienst.nl Port: 5060 RTP Port Range: 16384-32767 Enable Early Media Account Number: 020NNNNNNN Username: 020NNNNNNN Password: XXXXXXX Compression Type: G.711ALaw, G.729, G.722 Active G.168 Echo Cancellation so somehow I am not mapping that information properly into the Freeswitch conf... Julf