Setup Zoiper with FlyNumber SIP [SIP] (2)

Here is where to enter the SIP credentials from our PBX / Phone System in a series of images

My order still not active [Support] (7)
Text Messages in Costa Rica [Features] (2)
How long for number activation in XYZ country? [Support] (4)
Steps to get going [Pre-Sales] (2)
How can I get SMS service on my Fly Number ( 2 ) [Support] (24)
SMS - possible to receive ( 2 ) [Features] (21)
2 times payment every Month [Support] (2)
Voicemail help for an absolute beginner .....sorry if been asked before [Support] (4)
VoiceEmail does not function [Support] (2)
Over Billing 3.95 instead of 2.95 [Support] (4)
New number inquiry? [Billing] (3)
Credentials for Germany [Pre-Sales] (4)
Porting a number to Flynumber [Support] (6)
Forward incoming calls outgoing calls [Support] (2)
Receiving or sending Fax [Support] (3)
Still Pending.Australian number [Pre-Sales] (4)
Can use the number In whatsapp [Support] (4)
Make the phone ring several times before connecting to VMbox [Support] (2)
Forwarding to Android app not working [SIP] (5)
I paid and it just says pending? [Billing] (5)
Account Pending [Billing] (2)
Prices for Number in USA (San Francisco) redirected to Colombia [Pre-Sales] (2)
Missed call notification [Support] (2)
[resolved] phone not receiving / accepting calls [Support] (7)
Forward external SIP number to PBX? [SIP] (2)
I have problems with my acount [Billing] (2)
Porting in and israeli Number [Support] (2)
Top up not on balance [Billing] (2)
Payment confirmed - how long does it take? [Billing] (4)