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.
  • Navigate to Security appliance / Teleworker gateway > DHCP
  • DHCP configurations can vary, however Intermedia does require a DHCP server.
    • All VoIP devices must be placed on the Voice local VLAN and all other network devices should be on the Default local VLAN.
      • Click on this link for additional troubleshooting Meraki addtional help.
      • The Voice local VLAN that is preconfigured and in some cases, does not require a VLAN Config request from Intermedia. If the VoIP devices are not receiving service after the transition to the Voice local VLAN, then please call Intermedia with the VLAN ID and request that it be added to the config for the VoIP devices.
    • 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).
  • 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.
  1. 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

Additional helpful links
Note that the following links are for reference, the instructions they have are for the Meraki device administrators.

Meraki VLANs, click here.
Meraki Group policies, click here.