You can use flow preferences to set voice traffic to a preferred WAN uplink https://documentation.meraki.com/MX/Firewall_and_Traffic_Shaping/MX_Load_Balancing_and_Flow_Preferences#Flow_Preferences If the voice traffic is going over VPN you can use SD-WAN uplink policies which can use a configurable SLA (latency, jitter, loss) to send traffic on a preferred WAN uplink https://documentation.meraki.com/MX/Firewall_and_Traffic_Shaping/SD-WAN_and_Traffic_Shaping#SD-WAN_policies In MX16 beta you can now also use SD-WAN uplink policies for internet bound traffic https://documentation.meraki.com/Architectures_and_Best_Practices/Cisco_Meraki_Best_Practice_Design/Best_Practice_Design_-_MX_Security_and_SD-WAN/SD-WAN_Internet_Policies_(SD-Internet)
... View more