Hey, I’m trying for several days now to connect my Telnyx Account/Number with Vapi through the Vapi Dashboard, without success getting an "Error 400: Couldn’t Update Telnyx Number. Request failed with status code 401". Here are some details: - Active Number on Telnyx - Spanish Number (+34) I’ll love to get some help on how to finally resolve this issue. Thanks

Hi there! 👋 I understand you're having trouble connecting your Telnyx account/number with Vapi and getting an Error 400 with status code 401. I don't have access to your specific account configuration to diagnose the exact cause, but I can definitely help with some troubleshooting steps and explain what these error codes typically mean when integrating Telnyx with Vapi. ## What these errors typically mean The Error 400 (Bad Request) and status code 401 (Unauthorized) typically indicate authentication issues: - Status code 401 specifically indicates that authentication credentials are missing or invalid in the request. According to [documentation](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1334238882660618250), this error occurs when "the initial request was missing valid authentication credentials." ## Troubleshooting steps for your Spanish number Since you're using a Spanish (+34) number, there are some specific considerations: 1. **Direct import limitations**: According to [information I found](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1324828879667597424), Vapi primarily supports importing phone numbers from Twilio and Vonage directly. For Telnyx numbers, especially international ones, you may need to use SIP trunking instead. 2. **SIP Trunking setup**: For Spanish numbers, SIP trunking is likely required. This involves: - Creating a personalized origination SIP URI via the Vapi API - Setting up inbound authentication on Telnyx - Configuring the FQDN as

sip.vapi.ai

and Port as

5060

- Assigning your phone number to SIP trunking on Telnyx 3. **Authentication configuration**: Make sure to: - Verify your API keys are correct - Set up the proper authentication headers - Ensure the SIP username and credentials are correctly configured

Message marked as helpful by @Sacha! 🎉

checking if this is resolved/solved for you?