Yes, for the moment! TP-Link said they're working on a fix but can't tell when the firmware update will be available. I hope, soon as the problem seems to be solved now.

See forum "Media converters" - this is a router forum.

Thanks!

Try to turn DynDNS off to test - there seems to be a bug - see also other postings here. TP-Link is aware of this..

Model : Hardware Version : Not Clear Firmware Version : ISP : That's the question :-) I think it's about time, no?

I guess you need to send all VoIP traffic out to only one WAN interface - (policy rules?) - otherwise the other phone server will see data packets coming from more than one IP for one call and reject...