Wireless Router with POTS (RJ-11)??

[gubbe]

Just don't seem to be able to find a replacement for my current Zyxel P-2602HW-D1A router. I need the following features:
* 2-4 LAN ports, 100 or 1000
* Wireless LAN standard 802.11g and if possible 802.11n
* ADSL WAN Port
* 1x POTS port RJ-11
* SIP configuration
* NAT configuration
* Firewall

And that's about it. So, I can find many routers with those details EXCEPT the RJ-11, which I use to connect my Skype phone box. If anyone knows of a different way to set this up by somehow converting RJ-11 to RJ-45 I would love to hear about it !!!

Thanks all in advance for your contributions!!