LaunchTelephony

Synthflow SIP trunking network guidelines

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When you connect your PBX directly to Synthflow over SIP, your network must allow outbound traffic to our signalling endpoints and bidirectional RTP to our media pool addresses. Use the tables below to configure ACL’s on yoyur firewalls.

Ports and transports

TrafficProtocolPort rangePurpose
📞 SIP signallingUDP, TCP32681SIP over UDP/TCP
📞 SIP signallingTLS32682SIP over TLS
🔊 Media (RTP)UDP10000–60000RTP/RTCP between your network and Synthflow media nodes

Allow the signalling ports toward the SIP FQDN (or resolved IPs) for your region. Allow the media UDP range toward all media IPs listed for that region.

🌐 Global

📞 Signalling

FQDNIP (allow list)UDPTCPTLS
sip.synthflow.ai34.138.86.8326813268132682

🔊 Media

✅ Allow UDP 10000–60000 to each media address:

Media IP
34.73.190.14
35.237.117.4
34.148.74.207

🇺🇸 US

📞 Signalling

FQDNIP (allow list)UDPTCPTLS
sip.us.synthflow.ai35.237.42.43/32, 34.139.4.161/32, 4.138.180.50/32326813268132682

🔊 Media

✅ Allow UDP 10000–60000 to each media address:

Media IP
34.74.219.233
34.73.16.58
34.74.102.178

🇪🇺 EU

📞 Signalling

FQDNIP (allow list)UDPTCPTLS
sip.eu.synthflow.ai34.185.212.150/32, 34.89.186.33/32, 35.242.217.198/32326813268132682

🔊 Media

✅ Allow UDP 10000–60000 to each media address:

Media IP
34.89.251.213
35.198.108.150
34.141.20.211