This causes dSIPRouter to loop the call in from the carrier and then back out to the carrier Reproducible Use Case 1) login to dSIPRouter 2) Click Carrier Groups 3) Add a Carrier Group 4) Click the new Carrier Group 5) Click the Endpoint Tab 6) Enter an Friendly Name 7) Enter sip.telnyx.com or some other carrier hostname 8) Click Update and Reload