Perfect, I knew I had missed something, I was just not familiar with the Fritz options.

Thank you again.

I can confirm that this is the Dommel service.

I have successfully logged in to the FritzBox and added a second telephone number.

Th number shows registered on the device and on the provider's web page (Sipgate), but all inbound calls receive a 'busy' signal.

I can't find any advanced options for ...

Thank you very much, this really helps.

I will register the additional SIP providers to the FritzBox and receive DID for UK & US. I think outbound is free, so that makes it a pretty simple setup.

Really appreciate your support, thank you again.

My apologies for barging in to your forum, but I am trying to (remotely) provide support to an elderly (non-technical) family in Antwerp, who need to contact family all around the world.

My usual suggestion for VoIP is for a Siemens Gigaset plugged in to a regular (DSL) Router. However I have just ...