```Failed to place call: TwirpError(code=unavailab...
# ask-aip
powerful-hairdresser-78108
08/29/2025, 11:23 AM Copy code
Failed to place call: TwirpError(code=unavailable, message=twirp error unknown: unexpected status from INVITE response: sip status: 503: Service Unavailable, status=503, metadata={'error_details': 'CA4STHVuZXhwZWN0ZWQgc3RhdHVzIGZyb20gSU5WSVRFIHJlc3BvbnNlOiBzaXAgc3RhdHVzOiA1MDM6IFNlcnZpY2UgVW5hdmFpbGFibGUaQQoldHlwZS5nb29nbGVhcGlzLmNvbS9saXZla2l0LlNJUFN0YXR1cxIYCPcDEhNTZXJ2aWNlIFVuYXZhaWxhYmxl', 'sip_status': 'Service Unavailable', 'sip_status_code': '503'})t
tall-airline-16756
08/29/2025, 11:23 AMThanks for reaching out, Avinash. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
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powerful-hairdresser-78108
08/29/2025, 11:23 AMk
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tall-airline-16756
08/29/2025, 11:24 AMHey there! That error message showing a SIP status 503: Service Unavailable usually means the server handling the SIP INVITE request is temporarily unable to process it. This might happen if the server is overloaded, undergoing maintenance, or facing some configuration hiccups.
To help you out better, could you share a bit more about what's going on? For example:
• Are you using LiveKit's SIP integration or a custom setup?
• Does this error pop up all the time or just now and then?
• Have there been any recent changes to your SIP server or its configuration?
Once I have a bit more info, I’ll be able to guide you more effectively!