More NAT Tips
*Disable UPnP on routers
*Disable SIP ALG on the router (or try enabling) See [[Disable SIP ALG]]
*Disable Stun settings on the VoIP phone
(or try enabling it - stun.aa.net.uk can be used )
If NAT works, then well done, but if not we cannot guarantee to be able to make it work. We can provide broadband lines with constant quality monitoring and public IPs that can be used for VoIP - even multiple lines through different back-haul suppliers for extra resilience. Do speak to us.