Please try with pjsip.conf
Alright, I will try that!
How do I enter the extension an dial with Zoiper5 
you connected asterisk to zoiper?
You can open dialboard in zoiper and press 100 or your extension.
Yes I connected asterisk to Zoiper thank you, but I still have some questions?
-Why is it working with pjsip and not with sip?
-Where is the dialboard? Should I have Zoiper pro to see it?
Did you see search input (Find a contact…)?
You can see numpad icon next to it. Zoiper 5 correct?
I am not sure for your first question. I think it’s a default option and you can check more about it online.
Thank you
Oh yeah, I was looking for that option in the settings , Thank you for you help, I successfully dialed extension 100.