Through the internet voice is not working

[mustaqeem butt]

When using the 3cxphone windows client on an external network (outside of the local lan) i.e. through the internet

Ports like 5001 are already open... voice is not working. share ports which would b open

 

[JohnS_3CX]

Hi,

You can find the default ports here: https://www.3cx.com/docs/ports/

The Windows client relies especially on 5001 and 5090