There is an error saying that telnyx credentials in not correct so i reached out to telnyx they know the problem 48 hours later no response. The integration still is not working.

Hi there! Sorry to hear you're having trouble with your Vapi-Telnyx integration. I understand that you're getting an error about incorrect Telnyx credentials and that you've already reached out to Telnyx but haven't received a response yet. While I can't speak to why Telnyx hasn't responded, I can definitely help you troubleshoot the integration issue. Here are some steps you can take to troubleshoot the "Telnyx credentials not correct" error: ### 1. Verify SIP Trunk Configuration Make sure your SIP trunk is configured correctly: - Gateway IP should be

sip.telnyx.com

- FQDN should be

sip.vapi.ai

- Port should be

5060

(default for SIP communications) ### 2. Check Authentication Settings - Vapi expects authentication credentials where the username must be your SIP username - The password can be anything except the keyword "test" - Authentication is handled using the Authorization header in SIP ### 3. Verify Inbound Authentication Setup on Telnyx

1. Go to Voice / SIP Trunking / Create
2. Select FQDN
3. Select add FQDN
4. Select A
5. Add created SIP URI
6. FQDN: sip.vapi.ai
7. Port should be 5060 by default

### 4. Verify Outbound Authentication on Telnyx

1. Go to Voice / Sip Trunking / Authentication and routing
2. Scroll down to outbound calls authentication
3. Add the two fixed IPs from VAPI, select Tech Prefix and create a unique 4-digits Tech Prefix

### 5. Check Network Configuration - Verify that your network allows traffic on the SIP protocol - Ensure any firewalls or NATs are configured to allow SIP messages to pass through - Send inbound requests to

sip.vapi.ai

, as requests to direct IP addresses are blocked ### 6. Review Logs - Check Telnyx logs for any clues about why the connection is failing - Review any SIP logs on your server to see if the INVITE is received

Has your problem been resolved? I want to buy a Telnyx number but I'm afraid the same problem will happen.

no

checking if this is resolved/solved for you?

NO

Hey @Toketo1, as you're saying it's from Telenyx' side. Sorry, we can't help you with this. If anything related to VAPI, we'd be happy to help!