To ensure you receive all audio on your Flowroute calls, two specific policies must be put in place on your network's firewall.
SIP signaling (call control)
Allow UDP and TCP traffic over port 5060 from the following server IP addresses:
New PoPs IP Ranges
If you are on one of Flowroute's new Points of Presence (PoPs), make sure to add all of the following IP ranges to your whitelist. This ensures you take advantage of the failover and load balancing capabilities of the new PoPs.
|Point of Presence (PoP)||IP Range|
RTP media (call audio)
 If your system has issues connecting over port 5060, you can use 5160 as an alternate SIP port.
 RTP media port range varies by phone system. Your system's RTP media port range will be configured locally on your system and/or detailed in your system documentation.