[LEDE-DEV] Hardware for VDSL with ISDN or 4 x TAE (VoIP) ?

[Dennis Schneck]

Hello,
what Router is recommendation for VDSL and VOIP with a ISDN-Port or 4x TAE Ports
to use with lede-project Firmware. So that I can replace the Fritzbox 7490 from the Internet-Provider.
 
That I am able to Surf and Phone
 
And if possible to add a additonal Phone Number
with an other VoIP Provider (Sipgare for example)
 
Thanks a lot.
 
Dennis