diff --git a/import.go b/import.go
new file mode 100644
index 0000000..b2c2a4e
--- /dev/null
+++ b/import.go
@@ -0,0 +1 @@
+package cdr
diff --git a/record.go b/record.go
new file mode 100644
index 0000000..2aaa342
--- /dev/null
+++ b/record.go
@@ -0,0 +1,87 @@
+package cdr
+
+import (
+	"time"
+)
+
+type (
+	// LineKind defines several types of records
+	LineKind int
+	// ReasonKind is metadata about a certain Line
+	ReasonKind int
+)
+
+const (
+	// UnknownLine aka "never seen this LineKind before"
+	UnknownLine LineKind = iota
+	// VoiceLine aka "this line belongs to (a part of) a voice call"
+	VoiceLine
+	// TextLine aka "this line belongs to a text message"
+	TextLine
+	// DataLine aka "this line belongs to a data session"
+	DataLine
+)
+
+const (
+	// UnknownReason aka "never seen this reason before"
+	UnknownReason ReasonKind = iota
+	// ORIG aka "originated"
+	ORIG
+	// CFIM aka "call forward immediately"
+	CFIM
+	// CFNA aka "call forward not available"
+	CFNA
+	// CFBS aka "call forward busy"
+	CFBS
+	// CFOR aka "call forward out of reach"
+	CFOR
+	// ROAM aka "roaming"
+	ROAM
+	// PBXOR aka "PBX out of reach"
+	PBXOR
+)
+
+// Line contains common metadata for a record
+type Line struct {
+	Id          string
+	Time        time.Time
+	CLI         string
+	From        string
+	To          string
+	Account     string
+	Source      string
+	Destination string
+	Reason      ReasonKind
+	Leg         int
+	Kind        LineKind
+}
+
+// PricedLine connects a cost (buy) and price (sell) to a particular Line
+type PricedLine struct {
+	Line
+
+	Cost  int
+	Price int
+}
+
+// Call is a record of one or more PricedLines that ultimately form "a call".
+type Call struct {
+	From     string
+	To       string
+	Duration int
+	Cost     int
+	Price    int
+	Legs     []PricedLine
+}
+
+// Text is a specific PricedLine for a text message.
+type Text struct {
+	PricedLine
+}
+
+// Data is a specific PricedLine that annotates the number of bytes consumed in that session.
+type Data struct {
+	PricedLine
+
+	Bytes int
+}