sip telephony

Hi all, I have used an Asus RT-N66U router for several years now and it has worked flawlessly with my VOIP provider. Last week while checking up on the router and I noticed I was a few firmware updates behind so I decided to do an update. Unfortunately after the firmware update my VOIP...

Ladies / Gents, I am not a specialist in networking and my system at home works as it should do under normal circumstances! It is setup as follows: I know the cascade setup will be frowned upon, however this is the only way I can do it with my service provider (Kabel Deutschland /...