Hi Vapi team, i'm unable to authenticate and connect Vapi with my telnyx profile for outbound call. According to this documentation, https://docs.vapi.ai/advanced/sip/telnyx , step shown is to input a SIP URI in this format sip:@sip.vapi.ai, however that's not possible as Telnyx translated number only accepts alphanumeric characters. May i check what is the acceptable SIP URI format to key in, or where else can i insert this SIP URI? Tried authenticating few times and keep getting this error "**:"Couldn't validate SIP trunk credential. SIP gateway creation failed.","error":"Bad Request","statusCode":400** -Below is cmd used: curl -X POST https://api.vapi.ai/credential \ -H "Content-Type: application/json" \ -H "Authorization: Bearer YOUR_VAPI_PRIVATE_KEY" \ -d '{ "provider": "byo-sip-trunk", "name": "Telnyx Trunk", "gateways": [ { "ip": "sip.telnyx.com" } ], "outboundAuthenticationPlan": { "authUsername": "YOUR_SIP_USERNAME", "authPassword": "YOUR_SIP_PASSWORD", "sipRegisterPlan": { "realm": "sip.telnyx.com" } } }'

hello. Same problem with other method. I try zadarma method and i send request and ,y aswer same, i try do this by hands and have error.

Let us know if you encounter any issues with the new SIP trunk and we will be more than happy to provide additional support.

@Kai - SG did you find out what

<your-unique-id>

should be here? And were you able to succesfully setup Telnyx with Vapi ?

Hey, You can check out this guide: for details on integration. Note: This is a standard guide used by many telephony providers, so it should be helpful.