Note: Failover can only be configured when multiple IP addresses or FQDNs are defined within a single SIP Connection.
Step-by-Step Configuration
1. Create a SIP Connection
Navigate to: https://portal.telnyx.com/#/voice/connections
Click “Add SIP Connection”
Enter a Connection Name
Select Type: IP or FQDN
Click Create
2. Configure IP/FQDN Addresses
Click “Add IP”
Add your endpoints in order:
First entry: Primary IP/FQDN
Second entry: Secondary IP/FQDN (failover)
3. Set Failover Priority
Use the dropdown to define the routing order:
Primary → Secondary → (optional) Tertiary
Failover will follow this sequence if a route becomes unreachable or fails.
4. Save the Connection
Click “Next”, then “Done” to finalize the SIP Connection
Result
Your SIP Connection is now configured with failover. Calls will automatically route to backup endpoints if the primary endpoint fails.
Additional Notes
Failover is triggered when an endpoint is unreachable or fails to respond
Ensure all configured endpoints are properly provisioned and reachable
Regularly test failover behavior to confirm proper routing