"content_fields": [
                        {"tag":"call_uuid", "type": "*composed", "value": "call_uuid", "field_id": "call_uuid"},
                        {"tag":"SetupTime", "type": "*composed", "value": "SetupTime", "layout": "2006-01-02T15:04:05Z07:00", "field_id": "SetupTime"},
                        {"tag":"AnswerTime", "type": "*composed", "value": "AnswerTime", "layout": "2006-01-02T15:04:05Z07:00", "field_id": "AnswerTime"},
                        {"tag":"TOR", "type": "*composed", "value": "ToR", "field_id": "ToR"},
                        {"tag":"Tenant", "type": "*composed", "value": "Tenant", "field_id": "Tenant"},
                        {"tag":"Account", "type": "*composed", "value": "Account", "field_id": "Account"},
                        {"tag":"Subject", "type": "*composed", "value": "Subject", "field_id": "Subject"},
                        {"tag":"Supplier", "type": "*composed", "value": "Supplier", "field_id": "Supplier"},
                        {"tag":"Category", "type": "*composed", "value": "Category", "field_id": "Category"},
                        {"tag":"RequestType", "type": "*composed", "value": "RequestType", "field_id": "RequestType"},
                        {"tag":"Destination", "type": "*composed", "value": "Destination", "field_id": "Destination"},
                        //{"tag":"MatchedPrefix", "type": "*composed", "value": "~CostDetails:s/\"MatchedPrefix\":\"(\\w+)\"/${1}/", "field_id": "MatchedPrefix"},
                        //{"tag":"MatchedDestId", "field_id": "MatchedDestId", "type": "*composed", "value": "~CostDetails:s/\"MatchedDestId\":\"(\\w+)\"/${1}/"},
                        {"tag":"Direction", "type": "*composed", "value": "Direction", "field_id": "Direction"},
                        {"tag":"Usage", "type": "*composed", "value": "Usage", "field_id": "Usage"},
                        {"tag":"Cost", "type": "*composed", "value": "Cost", "field_id": "Cost"},
                        //{"tag":"ConnectFee", "field_id": "ConnectFee", "type": "*composed", "value": "~CostDetails:s/\"ConnectFee\":([0-9]|[0-9]+\\.[0-9]+)/${1}/"},
                        {"tag":"effective_caller_id_name", "type": "*composed", "value": "effective_caller_id_name", "field_id": "effective_caller_id_name"},
                        {"tag":"effective_caller_id_number", "type": "*composed", "value": "effective_caller_id_number", "field_id": "effective_caller_id_number"},
                        {"tag":"sip_network_ip", "type": "*composed", "value": "sip_network_ip", "field_id": "sip_network_ip"},
                        {"tag":"OriginID", "type": "*composed", "value": "OriginID", "field_id": "OriginID"},
                        {"tag":"OriginHost", "type": "*composed", "value": "OriginHost", "field_id": "OriginHost"},
                        {"tag":"DisconnectCause", "type": "*composed", "value": "DisconnectCause", "field_id": "DisconnectCause"},
                        {"tag":"PDD", "type": "*composed", "value": "PDD", "field_id": "PDD"},
                        {"tag":"original_read_codec", "type": "*composed", "value": "original_read_codec", "field_id": "original_read_codec"},
                        {"tag":"write_codec", "type": "*composed", "value": "write_codec", "field_id": "write_codec"},
                        {"tag":"original_read_rate", "type": "*composed", "value": "original_read_rate", "field_id": "original_read_rate"},
                        {"tag":"write_rate", "type": "*composed", "value": "write_rate", "field_id": "write_rate"},
                        {"tag":"rtp_audio_in_mos", "type": "*composed", "value": "rtp_audio_in_mos", "field_id": "rtp_audio_in_mos"},
                        {"tag":"progress_mediamsec", "type": "*composed", "value": "progress_mediamsec", "field_id": "progress_mediamsec"},
                        {"tag":"sip_h_X-custom", "type": "*composed", "value": "sip_h_X-custom", "field_id": "sip_h_X-custom"},
                        {"tag":"sip_h_X-site", "type": "*composed", "value": "sip_h_X-site", "field_id": "sip_h_X-site"},
                        {"tag":"sip_h_X-dept", "type": "*composed", "value": "sip_h_X-dept", "field_id": "sip_h_X-dept"},
                        {"tag":"sip_h_X-extension", "type": "*composed", "value": "sip_h_X-extension", "field_id": "sip_h_X-extension"},
                        {"tag":"sip_h_X-username", "type": "*composed", "value": "sip_h_X-username", "field_id": "sip_h_X-username"},
                        {"tag":"", "type": "*composed", "value": "rtp_audio_in_quality_percentage", "field_id": "rtp_audio_in_quality_percentage"},
                        {"tag":"sip_network_ip", "type": "*composed", "value": "sip_network_ip", "field_id": "sip_network_ip"},
                        {"tag":"direction", "type": "*composed", "value": "direction", "field_id": "direction"},
                        //{"tag":"Rate", "field_id": "Rate", "type": "*composed", "value": "~CostDetails:s/\"Value\":(\\d+\\.\\d+)/${1}/"},
                        {"tag":"CostDetails", "type": "*composed", "value": "CostDetails", "field_id": "CostDetails"},
                        {"tag":"Source", "type": "*composed", "value": "Source", "field_id": "Source"},
                ],