diff --git a/ponsim/v2/grpc/sbi/olt_handler.go b/ponsim/v2/grpc/sbi/olt_handler.go
new file mode 100644
index 0000000..bb058ca
--- /dev/null
+++ b/ponsim/v2/grpc/sbi/olt_handler.go
@@ -0,0 +1,62 @@
+package sbi
+
+import (
+	"context"
+	"github.com/google/uuid"
+	"github.com/opencord/voltha/ponsim/v2/common"
+	"github.com/opencord/voltha/ponsim/v2/core"
+	"github.com/opencord/voltha/protos/go/ponsim"
+	"github.com/sirupsen/logrus"
+)
+
+type PonSimOltHandler struct {
+	olt *core.PonSimOltDevice
+}
+
+func NewPonSimOltHandler(olt *core.PonSimOltDevice) *PonSimOltHandler {
+	var handler *PonSimOltHandler
+
+	handler = &PonSimOltHandler{olt: olt}
+
+	return handler
+}
+
+func (h *PonSimOltHandler) Register(
+	ctx context.Context,
+	request *ponsim.RegistrationRequest,
+) (*ponsim.RegistrationReply, error) {
+	common.Logger().WithFields(logrus.Fields{
+		"handler": h,
+	}).Info("Registering device")
+
+	onu := &core.PonSimOnuDevice{
+		PonSimDevice: core.PonSimDevice{
+			Address: request.Address, Port: request.Port, //GrpcSecurity: h.olt.GrpcSecurity,
+		}}
+
+	if assignedPort, err := h.olt.AddOnu(onu); assignedPort == -1 || err != nil {
+		return &ponsim.RegistrationReply{
+			Id:            uuid.New().String(),
+			Status:        ponsim.RegistrationReply_FAILED,
+			StatusMessage: "Failed to register ONU",
+			ParentAddress: common.GetInterfaceIP(h.olt.ExternalIf),
+			ParentPort:    h.olt.Port,
+			AssignedPort:  assignedPort,
+		}, err
+	} else {
+		common.Logger().WithFields(logrus.Fields{
+			"handler": h,
+			"onus":    h.olt.GetOnus(),
+		}).Debug("ONU Added")
+
+		return &ponsim.RegistrationReply{
+			Id:            uuid.New().String(),
+			Status:        ponsim.RegistrationReply_REGISTERED,
+			StatusMessage: "Successfully registered ONU",
+			ParentAddress: common.GetInterfaceIP(h.olt.ExternalIf),
+			ParentPort:    h.olt.Port,
+			AssignedPort:  assignedPort,
+		}, nil
+
+	}
+}