diff --git a/openoltsim/server.cc b/openoltsim/server.cc
new file mode 100644
index 0000000..1277798
--- /dev/null
+++ b/openoltsim/server.cc
@@ -0,0 +1,222 @@
+/*
+    Copyright (C) 2018 Open Networking Foundation
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <iostream>
+#include <memory>
+#include <string>
+#include <time.h>
+#include <pthread.h>
+
+#include "Queue.h"
+#include <iostream>
+#include <sstream>
+
+#include "server.h"
+#include "core.h"
+#include "state.h"
+
+#include <grpc++/grpc++.h>
+#include <openolt.grpc.pb.h>
+
+using grpc::Server;
+using grpc::ServerBuilder;
+using grpc::ServerContext;
+using grpc::ServerWriter;
+using grpc::Status;
+
+const char *serverPort = "0.0.0.0:9191";
+int signature;
+
+Queue<openolt::Indication> oltIndQ;
+
+class OpenoltService final : public openolt::Openolt::Service {
+
+    Status DisableOlt(
+            ServerContext* context,
+            const openolt::Empty* request,
+            openolt::Empty* response) override {
+        return Disable_();
+    }
+
+    Status ReenableOlt(
+            ServerContext* context,
+            const openolt::Empty* request,
+            openolt::Empty* response) override {
+        return Reenable_();
+    }
+
+    Status ActivateOnu(
+            ServerContext* context,
+            const openolt::Onu* request,
+            openolt::Empty* response) override {
+        return ActivateOnu_(
+            request->intf_id(),
+            request->onu_id(),
+            ((request->serial_number()).vendor_id()).c_str(),
+            ((request->serial_number()).vendor_specific()).c_str(),
+            request->pir());
+    }
+
+    Status DeactivateOnu(
+            ServerContext* context,
+            const openolt::Onu* request,
+            openolt::Empty* response) override {
+        return DeactivateOnu_(
+            request->intf_id(),
+            request->onu_id(),
+            ((request->serial_number()).vendor_id()).c_str(),
+            ((request->serial_number()).vendor_specific()).c_str());
+    }
+
+    Status DeleteOnu(
+            ServerContext* context,
+            const openolt::Onu* request,
+            openolt::Empty* response) override {
+        return DeleteOnu_(
+            request->intf_id(),
+            request->onu_id(),
+            ((request->serial_number()).vendor_id()).c_str(),
+            ((request->serial_number()).vendor_specific()).c_str());
+    }
+
+    Status OmciMsgOut(
+            ServerContext* context,
+            const openolt::OmciMsg* request,
+            openolt::Empty* response) override {
+        return OmciMsgOut_(
+            request->intf_id(),
+            request->onu_id(),
+            request->pkt());
+    }
+
+    Status OnuPacketOut(
+            ServerContext* context,
+            const openolt::OnuPacket* request,
+            openolt::Empty* response) override {
+        return OnuPacketOut_(
+            request->intf_id(),
+            request->onu_id(),
+            request->pkt());
+    }
+
+    Status UplinkPacketOut(
+            ServerContext* context,
+            const openolt::UplinkPacket* request,
+            openolt::Empty* response) override {
+        return UplinkPacketOut_(
+            request->intf_id(),
+            request->pkt());
+    }
+
+    Status FlowAdd(
+            ServerContext* context,
+            const openolt::Flow* request,
+            openolt::Empty* response) override {
+        return FlowAdd_(
+            request->onu_id(),
+            request->flow_id(),
+            request->flow_type(),
+            request->access_intf_id(),
+            request->network_intf_id(),
+            request->gemport_id(),
+            request->priority(),
+            request->classifier(),
+            request->action());
+    }
+
+    Status EnableIndication(
+            ServerContext* context,
+            const ::openolt::Empty* request,
+            ServerWriter<openolt::Indication>* writer) override {
+        std::cout << "Connection to Voltha established. Indications enabled"
+        << std::endl;
+        state::connect();
+
+        while (state::is_connected) {
+            auto oltInd = oltIndQ.pop();
+            bool isConnected = writer->Write(oltInd);
+            if (!isConnected) {
+                //Lost connectivity to this Voltha instance
+                //Put the indication back in the queue for next connecting instance
+                oltIndQ.push(oltInd);
+                state::disconnect();
+            }
+            //oltInd.release_olt_ind()
+        }
+
+        return Status::OK;
+    }
+
+    Status HeartbeatCheck(
+            ServerContext* context,
+            const openolt::Empty* request,
+            openolt::Heartbeat* response) override {
+        response->set_heartbeat_signature(signature);
+
+        return Status::OK;
+    }
+
+    Status EnablePonIf(
+            ServerContext* context,
+            const openolt::Interface* request,
+            openolt::Empty* response) override {
+
+        return EnablePonIf_(request->intf_id());
+    }
+
+    Status DisablePonIf(
+            ServerContext* context,
+            const openolt::Interface* request,
+            openolt::Empty* response) override {
+
+        return DisablePonIf_(request->intf_id());
+    }
+
+    Status Reboot(
+            ServerContext* context,
+            const openolt::Empty* request,
+            openolt::Empty* response) override {
+
+        //system("shutdown -r now");
+
+        return Status::OK;
+
+    }
+
+
+};
+
+void RunServer() {
+  OpenoltService service;
+  std::string server_address(serverPort);
+  ServerBuilder builder;
+
+  builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
+  builder.RegisterService(&service);
+
+  std::unique_ptr<Server> server(builder.BuildAndStart());
+
+  time_t now;
+  time(&now);
+  signature = (int)now;
+
+  std::cout << "Server listening on " << server_address
+  << ", connection signature : " << signature << std::endl;
+
+
+  server->Wait();
+}