diff --git a/models/abstract/ChassisUtils.go b/models/abstract/ChassisUtils.go
new file mode 100644
index 0000000..4c41698
--- /dev/null
+++ b/models/abstract/ChassisUtils.go
@@ -0,0 +1,105 @@
+/*
+   Copyright 2017 the original author or authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package abstract
+
+import "errors"
+
+/*
+GenerateChassis - constructs a new AbstractOLT Chassis
+*/
+func GenerateChassis(CLLI string) *Chassis {
+	chassis := Chassis{CLLI: CLLI}
+
+	var slots [16]Slot
+	for i := 0; i < 16; i++ {
+		slots[i] = generateSlot(i, &chassis)
+	}
+
+	chassis.Slots = slots
+	return &chassis
+}
+
+func generateSlot(n int, c *Chassis) Slot {
+	slot := Slot{Number: n, Parent: c}
+
+	var ports [16]Port
+	for i := 0; i < 16; i++ {
+		ports[i] = generatePort(i, &slot)
+	}
+
+	slot.Ports = ports
+	return slot
+}
+func generatePort(n int, s *Slot) Port {
+	port := Port{Number: n, Parent: s}
+
+	var onts [64]Ont
+	for i := 0; i < 64; i++ {
+		/* adding one because the system that provisions is 1 based on everything not 0 based*/
+		onts[i] = Ont{Number: i, Svlan: calculateSvlan(s.Number+1, n+1, i+1),
+			Cvlan: calculateCvlan(s.Number+1, n+1, i+1), Parent: &port}
+	}
+
+	port.Onts = onts
+	return port
+}
+
+func calculateCvlan(slot int, port int, ont int) int {
+	ontPortOffset := 120 // Max(ONT_SLOT) * Max(ONT_PORT) = 10 * 12 = 120
+	ontSlotOffset := 12  //= Max(ONT_PORT) = 12
+	vlanOffset := 1      //(VID 1 is reserved)
+
+	cVid := ((ont-1)%32)*ontPortOffset +
+		(slot-1)*ontSlotOffset + port + vlanOffset
+
+	return cVid
+}
+
+func calculateSvlan(slot int, port int, ont int) int {
+	ltSlotOffset := 16
+	vlanGap := 288  // Max(LT_SLOT) * Max(ltSlotOffset) = 18 * 16 = 288
+	vlanOffset := 1 //(VID 1 is reserved)
+
+	sVid := ((slot-1)*ltSlotOffset + port) + ((ont-1)/32)*vlanGap + vlanOffset
+
+	return sVid
+}
+
+/*
+NextPort pulls the first unMapped port in the abstract chassis so the next physical port can be mapped to it
+*/
+func (chassis *Chassis) NextPort() (*Port, error) {
+	info := &chassis.AllocInfo
+
+	if info.outOfPorts {
+		return nil, errors.New("Abstract chassis out of ports")
+	}
+
+	nextPort := &chassis.Slots[info.slot].Ports[info.port]
+
+	info.port++
+	if info.port == MAX_PORTS {
+		info.port = 0
+		info.slot++
+		if info.slot == MAX_SLOTS {
+			info.slot = 0
+			info.outOfPorts = true
+		}
+	}
+
+	return nextPort, nil
+}