diff --git a/microservice_sample/src/framework/uCentral_Protocol.h b/microservice_sample/src/framework/uCentral_Protocol.h
new file mode 100644
index 0000000..8a6094a
--- /dev/null
+++ b/microservice_sample/src/framework/uCentral_Protocol.h
@@ -0,0 +1,130 @@
+//
+//	License type: BSD 3-Clause License
+//	License copy: https://github.com/Telecominfraproject/wlan-cloud-ucentralgw/blob/master/LICENSE
+//
+//	Created by Stephane Bourque on 2021-03-04.
+//	Arilia Wireless Inc.
+//
+#pragma once
+
+#include "Poco/String.h"
+
+namespace OpenWifi::uCentralProtocol {
+
+	const int SERIAL_NUMBER_LENGTH = 30;
+
+	// vocabulary used in the PROTOCOL.md file
+	static const char * JSONRPC = "jsonrpc";
+	static const char * ID = "id";
+	static const char * UUID = "uuid";
+	static const char * JSONRPC_VERSION = "2.0";
+	static const char * METHOD = "method";
+	static const char * PARAMS = "params";
+	static const char * SERIAL = "serial";
+	static const char * FIRMWARE = "firmware";
+	static const char * CONNECT = "connect";
+	static const char * STATE = "state";
+	static const char * HEALTHCHECK = "healthcheck";
+	static const char * LOG = "log";
+	static const char * CRASHLOG = "crashlog";
+	static const char * PING = "ping";
+	static const char * CFGPENDING = "cfgpending";
+	static const char * RECOVERY = "recovery";
+	static const char * COMPRESS_64 = "compress_64";
+	static const char * CAPABILITIES = "capabilities";
+	static const char * REQUEST_UUID = "request_uuid";
+	static const char * SANITY = "sanity";
+	static const char * DATA = "data";
+	static const char * LOGLINES = "loglines";
+	static const char * SEVERITY = "severity";
+	static const char * ACTIVE = "active";
+	static const char * REBOOT = "reboot";
+	static const char * WHEN = "when";
+	static const char * CONFIG = "config";
+	static const char * EMPTY_JSON_DOC = "{}";
+	static const char * RESULT = "result";
+	static const char * REQUEST = "request";
+	static const char * PERFORM = "perform";
+	static const char * CONFIGURE = "configure";
+	static const char * PENDING = "pending";
+	static const char * SUBMITTED_BY_SYSTEM = "*system";
+	static const char * URI = "uri";
+	static const char * COMMAND = "command";
+	static const char * PAYLOAD = "payload";
+	static const char * KEEP_REDIRECTOR = "keep_redirector";
+	static const char * DURATION = "duration";
+	static const char * PATTERN = "pattern";
+	static const char * LEDS = "leds";
+	static const char * ON = "on";
+	static const char * OFF = "off";
+	static const char * BLINK = "blink";
+	static const char * PACKETS = "packets";
+	static const char * NETWORK = "network";
+	static const char * INTERFACE = "interface";
+	static const char * TRACE = "trace";
+	static const char * WIFISCAN = "wifiscan";
+	static const char * TYPES = "types";
+	static const char * EVENT = "event";
+	static const char * MESSAGE = "message";
+	static const char * RTTY = "rtty";
+	static const char * TOKEN = "token";
+	static const char * SERVER = "server";
+	static const char * PORT = "port";
+	static const char * USER = "user";
+	static const char * TIMEOUT = "timeout";
+	static const char * UPGRADE = "upgrade";
+	static const char * FACTORY = "factory";
+	static const char * VERBOSE = "verbose";
+	static const char * BANDS = "bands";
+	static const char * CHANNELS = "channels";
+	static const char * PASSWORD = "password";
+	static const char * DEVICEUPDATE = "deviceupdate";
+
+    static const char * SERIALNUMBER = "serialNumber";
+    static const char * COMPATIBLE = "compatible";
+    static const char * DISCONNECTION = "disconnection";
+    static const char * TIMESTAMP = "timestamp";
+    static const char * SYSTEM = "system";
+    static const char * HOST = "host";
+    static const char * CONNECTIONIP = "connectionIp";
+    static const char * TELEMETRY = "telemetry";
+
+	enum EVENT_MSG {
+			ET_UNKNOWN,
+			ET_CONNECT,
+			ET_STATE,
+			ET_HEALTHCHECK,
+			ET_LOG,
+			ET_CRASHLOG,
+			ET_PING,
+			ET_CFGPENDING,
+			ET_RECOVERY,
+			ET_DEVICEUPDATE,
+			ET_TELEMETRY
+		};
+
+	inline static EVENT_MSG EventFromString(const std::string & Method) {
+		if (!Poco::icompare(Method, CONNECT)) {
+			return ET_CONNECT;
+		} else if (!Poco::icompare(Method, STATE)) {
+			return ET_STATE;
+		} else if (!Poco::icompare(Method, HEALTHCHECK)) {
+			return ET_HEALTHCHECK;
+		} else if (!Poco::icompare(Method, LOG)) {
+			return ET_LOG;
+		} else if (!Poco::icompare(Method, CRASHLOG)) {
+			return ET_CRASHLOG;
+		} else if (!Poco::icompare(Method, PING)) {
+			return ET_PING;
+		} else if (!Poco::icompare(Method, CFGPENDING)) {
+			return ET_CFGPENDING;
+		} else if (!Poco::icompare(Method, RECOVERY)) {
+			return ET_RECOVERY;
+		} else if (!Poco::icompare(Method, DEVICEUPDATE)) {
+			return ET_DEVICEUPDATE;
+		} else if (!Poco::icompare(Method, TELEMETRY)) {
+			return ET_TELEMETRY;
+		} else
+			return ET_UNKNOWN;
+	};
+}