I have a SNOM 300 device setup with the SIP account behind an Afrihost Fibre connection using a DLINK DIR825 router. I can make calls without issues but cannot receive any calls to 0872382548
I hope you are well. Please can you reregister your device. I tested the account on my device and I received an incoming call. There could be a setting on the device that is blocking the incoming calls. Please check for a setting called DND, it should be disabled. If the setting is disabled, please take a screenshot of the setup page for the snom device I would like to see if the correct fields have the relevant information.
Please follow this link and test.
Support broken Registrar is the setting you need to turn on.
Excellent, have a good day.