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Calls via Telnyx SIP have costs for not identifyin...
# support
n
I'm having a problem with the Telnyx SIP connection. Since I left it connected like this, calls aren't coming in. They take a long time, and now it doesn't detect whether someone answers or not, even if they're voicemail. I'm being charged for this error alone. With the default connection, by simply adding the number and password, it did identify the calls and didn't have these charges. The SIP connection is supposed to be more functional, but Vapi doesn't identify them now.
v
To troubleshoot Telnyx SIP connection issues with Vapi, first verify your SIP trunk configuration. On Vapi, create your SIP URI as follows:
Copy code
bash
curl --location 'https://api.vapi.ai/phone-number' \
  --header 'Authorization: Bearer your-vapi-private-api-key' \
  --header 'Content-Type: application/json' \
  --data-raw '{
    "provider": "vapi",
    "sipUri": "sip:your-username@sip.vapi.ai",
    "assistantId": "your-assistant-id"
  }'
Ensure your Telnyx SIP trunk uses 
sip.vapi.ai
on port 
5060
and that your number is assigned to SIP trunking. Double-check SIP logs for INVITE/REGISTER issues if calls are delayed or not coming in. [Source: Vapi Telnyx SIP documentation](https://docs.vapi.ai/advanced/sip/telnyx) Source: - [Vapi Telnyx SIP documentation](https://docs.vapi.ai/advanced/sip/telnyx)
a
Hey, Could you please schedule a brief call at your convenience so we can discuss this matter in detail? Kindly use the following link to book a suitable time: .
n
That would be perfect, but I only speak Spanish. I'd love to hear from you if we can understand each other in English.
My problems are simpler. I want to mask my call number with a verified one I added in Telnyx, but I'm incurring costs that I shouldn't have. With "Programmable Voice," Vapi somehow correctly identifies rejected, unanswered, or voicemail calls. This is fine because I'm not charged for these calls. However, it doesn't include the masked number, which is simply adding, for example, "from": "+Number." This is the ultimate goal. With "SIP Trunking," it doesn't identify any calls at all. Even those marked as "Customer Ended Calls" are "1" second long, and the provider charges for them. I don't even answer because they're tests on my cell phone number. Charging for unanswered calls isn't at all scalable. The only good thing is that these calls I make do arrive with the verified number I have in Telnyx. Not to mention that out of 5 calls, 2 have an error saying "An error occurred in this call: call.in-progress.error-sip-telephony-provider-failed-to-connect-call" and the other 3 that I don't answer, they charge me.
a
Hello NicolasBcortes, I am able to create a feature request for the Telnyx caller ID using our Telnyx and Vapi import phone number integration. However, regarding voicemails over SIP, it is difficult to commit anything at this time.
n
You're not answering me anything.
s
sent you DM
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