What PBX VoIP Network Firewall Settings Are Needed for Business Networks?

Business firewalls must explicitly allow VoIP traffic to ensure high-quality, secure VoIP calls while minimizing network disruptions.

To permit VoIP traffic:

1. Allow (UDP 5060, TCP 443/5060, TLS 5061, WSS 8089) to/from CommPeak PBX's IP.
2. Open UDP 10000-20000 for RTP media for CommPeak PBX's IP.
3. Disable SIP ALG and deep packet inspection to avoid call disruptions.

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IMPORTANT

If using a shared ISP for routing both VoIP traffic and data traffic, enabling QoS (Quality of Service) is essential to prioritize VoIP traffic:

1. Enable the QoS settings to give SIP and RTP the highest priority.
2. Reserve bandwidth for VoIP to prevent congestion.
3. Monitor network usage to adjust QoS as needed.

You can check the Prioritizing Voice Traffic From CommPeak on Windows Environments article to learn how to prioritize CommPeak Softphone traffic using Windows' QoS settings.

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