Problems registering VSP (budgetphone.nl)

[nefelimhg]

Hi all,

I'm a premium voxalot user so i should be able to register a VSP.
The problem i'm experiencing is that i'm unable to register budgetphone.nl
I tried to settings provided by budgetphone and i tried the ones i found here on the forum.

Putting @budgetphone.nl, @sip.budgetphone.nl or @sip1.budgetphone.nl behind the username doesn't solve it.
Changing the codec sequence (i saw this in some reply's on this forum) doesn't solve it.
Setting the wrong password at first and changing it to the correct one doesn't work.
The status overview shows Auth Sent and (if i'm lucky) eventually ends up with the message failed.
I changed one thing at a time and if it didn't solve the problem i deleted the settings and started all over again.

My current settings :
Providername : Budgetphone
Username : 31xxxxxxxxxx
Codecs : g729;g723;g726;ilbc;gsm;ulaw;alaw
Host : sip1.budgetphone.nl
Port : 5060
Active : Yes
Register : Yes
Optimize : No

Thanks for reading!
Regards,
Jericho