I am looking for a reliable, VoIP friendly router. I currently have a Zyxel Zywall USG50 and am having a number of issues with some traffic not making it to the phones from my hosted VoIP provider even after configuring it according to their recommendations and the recommendations of Zyxel support. We have installed a packet sniffer and determined the traffic gets to the router but fails to be routed to the devices.
We have about 35 VoIP phones plus as many workstations, we need a router that can comfortably support this, VPN connections, and has QoS. Any recommendations would be very helpful!