VoLTE VoLTE VoLTE Calling Signal Processing System Serving-Call Session Control Function and VoLTE Calling Signal Processing Method Interconnection Border Control Function and Control Method

摘要

A VoLTE origination call processing system, a serving call control function device, a VoLTE origination call processing method, an interconnection boundary control function device, and a control method thereof are disclosed. A VoLTE outgoing call processing system according to the present invention is a VoLTE outgoing call processing system for processing VoLTE (Voice over LTE) call originated from an LTE (Long Term Evolution) network. The VoLTE outgoing call processing system includes a legacy network Gateway control function device; And an Interconnection Border Control Function (IBCF) interlocked in the LTE network to detect a failure, and when a failure is detected in the interconnection boundary control function device, And a Serving-Call Session Control Function (S-CSCF) for processing an outgoing call by setting routing to a gateway control function device when an outgoing call using another IMS subscriber as a receiver is received do.