13255: Dialing .sip.twilio.com addresses is not currently allowedPositive FeedbackNegative FeedbackWARNING: 13255warning-13255 page anchorPositive FeedbackNegative FeedbackWARNING Descriptiondescription page anchorPositive FeedbackNegative FeedbackAt this time internal routing of SIP calls within Twilio is not supported i.e. dialing .sip.twilio.com addresses from a Twilio number.