Beolink

Hi, I´m trying to register the IVM on a Intertex IX67 SIP switch, however I allways receive the following error: Register attempt for proxy sip:6606@sip.test.nu failed 400 Bad request. in the IX67 log I can see the following message: JUN 08 16:01:59 tSip notice Authentication: 'qop' directive missing and RFC 2069 support is disabled. JUN 08 16:02:27 tSip notice Authentication: 'qop' directive missing and RFC 2069 support is disabled. JUN 08 16:02:27 tSip notice Authentication: 'qop' directive missing and RFC 2069 support is disabled. JUN 08 16:02:47 tSip notice Authentication: 'qop' directive missing and RFC 2069 support is disabled. JUN 08 16:02:47 tSip notice Authentication: 'qop' directive missing and RFC 2069 support is disabled. Any suggestions? Best Regards, Andy