Unable to Use GHL SIP Trunk Credentials in Vapi
# supportm
Mahmood
11/18/2025, 9:18 PMIssue:
I am trying to take the SIP trunk credentials from my GHL (LeadConnector) account and configure them in Vapi so I can make and receive calls, but it is not working.
Details:
I have the SIP Server URL, username, and password from GHL.
I attempted to set up a SIP trunk in Vapi using this information.
Registration fails, and I am unable to make or receive calls.
Mahmood
11/18/2025, 9:18 PM@Vapi @Vapi Support Bot
v
Vapi Support Bot
11/18/2025, 9:19 PMTo help troubleshoot:
Could you please share the exact error message or code you see when the SIP trunk registration fails in Vapi?
Source:
- [Vapi SIP Trunk Documentation](https://docs.vapi.ai/advanced/sip/sip-trunk)
Vapi Support Bot
11/18/2025, 9:19 PMTo set up your GHL SIP trunk in Vapi, use the following API call to create a custom credential (replace placeholders with your actual details):
Copy code
bash
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": "GHL Trunk",
"gateways": [{ "ip": "YOUR_GHL_SIP_SERVER_URL", "inboundEnabled": false }],
"outboundAuthenticationPlan": {
"authUsername": "YOUR_GHL_USERNAME",
"authPassword": "YOUR_GHL_PASSWORD"
}
}'m
Mahmood
11/18/2025, 9:19 PMim jsut getting
Customer Busy
as the outcome it does register fine but when i try to make the outbound call it shows Customer Busy to every number i try otherwise it works fine and the call goes through
c
Chiranjeet Mishra
11/20/2025, 7:53 PMCould you provide the phone number id?
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