1. There are no known issues with Meraki routers at this time.
  2. These routers do not have SIP ALG.
  3. It is recommended to use a set of highly efficient DNS servers such as Google's public DNS or an on-site Windows server to prevent DNS resolution failures on Polycom phones.
  4. Meraki routers are capable of running packet captures which is valuable for troubleshooting purposes. Currently the packet capture tool is in beta but testing has proven to be pretty effective.

Recommended configuration

  1. Log in to your Meraki router via the Meraki Dashboard
    .Note: It has come to our attention that the Meraki dashboard has been updated and settings are now in new locations. Please notate where the settings are not located at and put in for a KB article update with the new locations laid out.
  2. Navigate to Security appliance / Teleworker gateway (depending on the Cisco Meraki router you have this option will vary). Go to Wireless settings.
    • It is advised to set the dual-band wireless channel selection to "Auto (1)" if deploying wireless adapters and transmitters on site.
  3. Navigate to Security appliance / Teleworker gateway > DHCP
    • DHCP configurations can vary, and Intermedia does not suggest any particular configuration here, but it is fine to leave all hosts on the LAN on the default VLAN 1. Intermedia requires a DHCP server.
      • Set the DNS nameservers field to "Use Google Public DNS" (this is only needed for Polycom phones to prevent DNS resolution time-out errors resulting in registration loss).
  4. Navigate to Security appliance / Teleworker gateway > Traffic shaping
    • It is recommended not to use Load Balancing with VoIP on separate WAN links, load balancing across different WAN links can cause traffic to appear to come from different WAN IPs which our network will interpret as jitter.
    • Click "details" on WAN 1 interface and specify the downlink and uplink speeds that you're paying for 
    • Global bandwidth limits may be used if you feel the need for it on your network, SpeedBurst is not applicable to Intermedia phones.
  5. Create a traffic shaping rule for your Meraki router under Traffic shaping
    • Click Add+ > Custom expressions
      • Please contact Intermedia to aquire the network address information specific to the VoIP product you're using.
      • The Meraki uses slash notation to add these rules, so you simply add <ipaddress>/20 to add a /20 block subnet to this list.
    • Bandwidth limit: Ignore network per-client limit (unlimited)
    • Priority: High
    • DSCP tagging: 46 (EF - Expedited Forwarding, Voice)
    • Click Save