fair-rose•3h ago
Unable to transfer call
I was unable to complete the transfer to the Asterisk Vicidial provider. We performed several tests from the Vicidial side and enabled all firewall rules to allow access to Vapi; however, it’s still not possible to receive requests from Vapi to Vicidial.
The call is successfully received in Vapi from the Vicidial provider, but when it tries to transfer the call to a human assistant, it doesn’t work. For some reason, Vapi doesn’t make the request to Vicidial.
My theory is that the assistant cannot reach the SIP Trunk configuration and therefore doesn’t initiate the transfer or send the request to Vicidial.
Please, help me with this issue.
1 Reply
Thank you for the details. To help diagnose the issue, could you confirm if SIP REFER is enabled on your SIP trunk configuration in Vapi and with your Vicidial provider? This is required for call transfers to work as expected.
Sources:
- Vapi SIP Trunking Telnyx external number call forwarding troubleshooting
- Vapi documentation: call forwarding
- Vapi SIP Trunk documentation
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