PLEASE NOTE: We highly recommend consulting an IT firm or network professional when configuring advanced network settings or devices.
QOS/Whitelist
For Quality of Service (QOS) rules on your router(s), please whitelist 35.225.57.188 for all TCP and UDP traffic.
VoIP Compatible Routers
NOTE: The routers listed here are known to work reliably with our services. However… given the constantly updated firmware and physical changes made by manufacturers and the nature of cloud-based services, The Kotter Group cannot control the final configuration of the hardware or your computer systems/networks, or promise that any given router will work with your system, or guarantee that our information is 100% up to date.
- Ubiquiti
- Sonicwall
- Meraki
- WatchGuard
- Fortigate
- Adtran
- Cisco ASA
- EdgeMarc
Routers with Known or Possible Issues
- Modem/Gateway Combo’s from any cable provider
- Netgear
- Linksys
- D-Link
- TP-Link
- ASUS
- Apple
- Off-Brand
- MediaLink
- Cisco RV and lower series
- PfSense
- Untangle
- ZyXEL
- DD-WRT
- Tomato
General Router Configuration
DO:
- Enable Consistent NAT
- Unblock TCP and UDP Outbound
- Check for latency spikes and other issues
- Check for packet loss
- Ensure you have sufficient bandwidth
- Set TCP/UDP timeouts to at least 300
DON’T
- Enable SIP-ALG
- DPI SIP Traffic
- Use SIP Normalization
- Use Static NAT’s for phones
- Double NAT
- Use SPI