SIP: Redirect failed

Twilio could not process the SIP 30x response from your SIP server.

• Max redirect limit reached.
• Redirection is not allowed in the call to the registered SIP endpoint.
• Redirect target in the Contact header of the SIP 30x response is not a valid SIP URI.
• Redirect target is a private IP address.
• Redirect target is a Twilio domain such as *.sip.twilio.com or *.pstn.twilio.com.
• Redirect target is an IP in a deny list.

Review the Possible Causes and update the redirect target as needed.