I just found a interesting, relaiable VoIP router from Uk market.
That is Vigor2500V, suitable call to other VoIP usrs or via the DrayTEL
gateway to anyone on a regular phone wordwide (fixed or modbile). You
can receive calls too, either over the internet or via your own
personal Draytel phone number.
I think DrayTek models all with rich VPN, DES/3DES, firewall functions.
This is a high-end router model but with very reasonable price range.
This is my idea, you can find Vigor router from various web sites.
Just for your info.