If you have a large number of VoIP phones and you need more than one internet connection, say half on one connection and half on the other you might run into problems.
One connection might be used more than the other as the people on the other might be out of the office for the day.
This is where a Dual-WAN load balancing router would come in useful. The router kind of bonds 2 connection together and evenly supplies PC’s, VoIP Phones or anything on the network for that matter. Thus coping with the d
emand of all devices.
One tried and tested is a NetGear Prosafe VPN FIREWALL 25 4GB LAN/WAN DUAL PORTS