The agent can pick up the phone and say the first message, but does not reply. Based on the logs, It seems that the deepgram transcriber is not working, there fore of course no reply is generated by the llm and turned into speech by the tts model. Relevant call id's: 7ffc704f-e889-4bb1-a863-b1b56fed1361 8454de5b-b3e6-407a-8fe0-3a753c9d660a da6556de-4680-4fe5-acc1-1ae4c13eb501 Phone number id: de301635-c2de-48b3-ae2d-097bf556e2ac Assistant id (uses assistantOverrides): 0b05f094-9104-4df5-b5cc-fa6940ed1dd7

Hi there! 👋 I'm unable to provide specific debugging information for your provided call IDs, but I can definitely help with common Deepgram transcription issues on Telnyx SIP connections. Based on the information I found, there are several potential causes and solutions for your transcription issue: ## Deepgram Configuration Adjustments The default Deepgram endpointing value of 10ms might be too aggressive, causing transcription failures. Try adjusting these settings:

transcriber.endpointing: 300
startSpeakingPlan.waitSeconds: 0.8

According to [multiple user reports](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1343636482874933340), increasing the endpointing value gives the system more time to process the complete utterance and avoid premature interruptions. ## Network and Authentication Issues Deepgram might be blocking your IP address, resulting in a "Transcriber failed" error. Check for any network errors in your logs. Also, verify your Telnyx SIP connection is properly configured according to the [Telnyx integration guide](https://docs.vapi.ai/advanced/sip/telnyx). ## Alternative Transcribers If Deepgram continues to fail, consider switching to alternative transcribers: - Whisper (via Talkscribe) - Gladia - Azure Several users have [resolved similar issues](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1343612796717371393) by changing transcribers. ## Telnyx Denoiser Feature Another solution is to enable Telnyx's built-in denoiser feature, which can [improve audio quality](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1337367225384046634) before it reaches Vapi and Deepgram. ## Language-Specific Settings If you're not using English transcriptions, set

smartEndpointingEnabled

to

false

as mentioned in [community discussions](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1332286268805087272).

Solved, seems the connection was bad since my telnyx was connected through programmable voice, not sip trunking.

Message marked as helpful by @Jesper Rietbergen! 🎉

checking if this is resolved/solved for you?