Product: Elastic SIP Trunking
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.