Hello, My calls have been dropping very often recently and I have been trying to figure out what the cause is. The following are some call IDs you can check: - 019a3bc8-c0ce-7bbe-b9ce-e4a266b95791 - 019a362a-31c1-7ccb-b42f-28938760ac2c - 019a3635-31ba-7882-b772-31d54ee7e9cc Please kindly help figure our what is causing the call failure. Thanks!

Hi Ibrahim, To address the issue where calls drop immediately after initiating a transfer, you may want to follow these steps: 1. Verify if Vapi initiated the forwarding: - Use the API to check if the call

endedReason

is

assistant-forwarded-call

. If yes, Vapi forwarded the call, and you can proceed to check with your telephony provider. If not, review your assistant's configuration. You can refer to the [Debug call forwarding drops guide](https://docs.vapi.ai/phone-calling/transfer-calls/debug-forwarding-drops). 2. Check telephony provider logs: - Access your telephony provider's dashboard (like Twilio, Vonage, or Telnyx), and search using the

phoneCallProviderId

from the Vapi response. Look for errors during the call transfer process. Use links like [Twilio Console > Call Logs](https://console.twilio.com/us1/monitor/logs/calls) to find detailed error logs. 3. Analyze SIP signaling (if applicable): - Download the PCAP file if you're using a SIP-based call and analyze it with Wireshark. Look for the

REFER

packet to see if Vapi sent the transfer request. 4. Review and correct configurations: - Ensure the destination number is correctly formatted and reachable. Check your assistant's settings to ensure proper configuration without server message overrides that might prevent Vapi from managing the transfer. For more detailed steps or alternative solutions, you can refer to the same [Debug call forwarding drops guide](https://docs.vapi.ai/phone-calling/transfer-calls/debug-forwarding-drops) for guidance.