I would like to buy the answering atendant but I can't get it to work with this software I have tested some windows softphones without any problems.
I us as sip adres +311234567
proxy: sip.budgetphone.nl on port: 5060
user domain: budgetphone.nl
I dón't have to use stun servers ore stuff like that, please hel me get it up and running so I can buy it 
Kind regards,
Jeroen