MX68 and MX84 can do QoS for voice over broadband. You use Traffic Shaping in the Meraki dashboard. Set your WAN speeds first. Then create rules to prioritize WebEx calling, either by DSCP (usually EF / 46) or by ports. The MX will put that traffic into the realtime or high priority queue. No special firmware is required. Any current MX release supports this. Keep in mind it mainly helps outbound traffic. Inbound depends on your ISP honoring DSCP. Best results come from wired links and correctly tagged voice traffic. ... View more