Hi there! 👋 I can help with that SIP configuration error you're encountering.
I understand you're getting the error "X-Reason: Multiple accounts are attempting to route the same phone number from the same carrier" when trying to integrate your own SIP. I have some information that should help resolve this issue.
According to the [troubleshooting information](
https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1339952678150868992) I found, this error occurs because "some other accounts are also using this phone number for calls." This typically happens when the same phone number is associated with multiple organizations or accounts.
Here's how to fix it:
1. **Delete existing SIPs and recreate them**: The recommended solution is to "delete all of the existing SIPs with this number on Vapi and then try creating new again." This should resolve the conflict where multiple accounts are trying to use the same number.
2. **Follow the correct BYO procedure**: Make sure you're following the proper sequence:
- First, create the trunk (both inbound and outbound)
- Then create the phone number
- Finally, link the number
3.
Check your Twilio settings (if applicable): Some users have resolved similar issues by [switching their Twilio setting from SIP to Webhook](
https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1343208312249913397).
4. **Review SIP configuration**: Ensure your SIP trunk is correctly configured with the proper Credential ID, IP/Port, and authentication details.
For more detailed guidance, you can refer to the [SIP integration guide](
https://vapi.notion.site/SIP-104008c8393f80feaeb7de8ca19565ed) which walks through the complete setup process.
Is there anything specific about this error you'd like me to explain further?
Sources:
- [Discord Thread about Multiple Accounts Error](
https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1339952678150868992)