diff --git a/protocol.js b/protocol.js
index 3a531cc..6ab5fb8 100644
--- a/protocol.js
+++ b/protocol.js
@@ -1,10 +1,13 @@
 //var logger = require('winston');
 var logger = require('./logger'); // Importa el logger configurado
 
-var SerialPort = require('serialport');
+var config = require('./config');
+var SerialPort = require('serialport');  //Para producion
+//var SerialPort = require('./simulacion/fakeSerialAdapter'); //Para testear en consola llamando simultaneamente node protocol.js y node simulacion/simulacion.js
 
+   
+  
 // Internal Dependencies
-var config = require('./config');
 var token = require('./constants');
 var codec = require('./codec');
 var app = require('./app');
diff --git a/simulacion/fakeSerialAdapter.js b/simulacion/fakeSerialAdapter.js
new file mode 100644
index 0000000..f65856d
--- /dev/null
+++ b/simulacion/fakeSerialAdapter.js
@@ -0,0 +1,14 @@
+const createVirtualSerialPair = require('./virtualLink');
+
+const pair = createVirtualSerialPair();
+
+class SerialPortWrapper {
+
+    constructor() {
+        return pair.portA; // protocol.js usa este
+    }
+}
+
+// exportamos también el otro extremo
+module.exports = SerialPortWrapper;
+module.exports.simulatorPort = pair.portB;
\ No newline at end of file
diff --git a/simulacion/fakeSerialPort.js b/simulacion/fakeSerialPort.js
new file mode 100644
index 0000000..23db415
--- /dev/null
+++ b/simulacion/fakeSerialPort.js
@@ -0,0 +1,66 @@
+
+const token = require('../constants');
+const EventEmitter = require('events');
+class FakeSerialPort extends EventEmitter{
+
+    constructor(name) {
+        super();
+        this.name = name;
+        this.peer = null;
+        this.handlers = {};
+          this.options = { baudRate : 9600, dataBits : 8, parity : 'none', stopBits : 1 };
+        setTimeout(() => this.emit('open'), 100);
+    }
+
+    on(event, cb) {
+        this.handlers[event] = cb;
+    }
+ connect(peer) {
+        this.peer = peer;
+    }
+    emit(event, data) {
+        if (this.handlers[event]) {
+            this.handlers[event](data);
+        }
+    }
+
+    write(data) {
+        console.log("[APP] WRITE ->", JSON.stringify(data));
+
+        // 👇 SIMULACIÓN DEL EQUIPO
+        simulateAnalyzerResponse.call(this, data);
+    }
+}
+
+function simulateAnalyzerResponse(data) {
+
+    // ENQ recibido → responder ACK
+    if (data === token.ENQ) {
+
+        console.log("🧪 ANALYZER <- ENQ");
+        console.log("🧪 ANALYZER -> ACK");
+
+        setTimeout(() => {
+            this.emit('data', token.ACK);
+        }, 500);
+    }
+
+    // Mensaje ASTM recibido → ACK
+    else if (data.startsWith(token.STX)) {
+
+        console.log("🧪 ANALYZER <- ASTM MESSAGE");
+
+        setTimeout(() => {
+            this.emit('data', token.ACK);
+        }, 500);
+    }
+
+    // Fin transmisión
+    else if (data === token.EOT) {
+
+        console.log("🧪 ANALYZER <- EOT");
+    }
+}
+
+
+module.exports = FakeSerialPort;
\ No newline at end of file
diff --git a/simulacion/simulator.js b/simulacion/simulator.js
new file mode 100644
index 0000000..3cc831a
--- /dev/null
+++ b/simulacion/simulator.js
@@ -0,0 +1,50 @@
+const SerialAdapter = require('./fakeSerialAdapter');
+const port = SerialAdapter.simulatorPort;
+
+const token = {
+    ENQ: String.fromCharCode(5),
+    ACK: String.fromCharCode(6),
+    EOT: String.fromCharCode(4),
+    STX: String.fromCharCode(2)
+};
+
+port.on('open', () => {
+    console.log("SIMULADOR CONECTADO");
+});
+
+port.on('data', buffer => {
+
+    const data = buffer.toString('ascii');
+
+    console.log("HOST → EQUIPO:", JSON.stringify(data));
+
+    //-----------------------------------
+    // RESPUESTAS ASTM DEL EQUIPO
+    //-----------------------------------
+
+    // 1️⃣ Host quiere iniciar sesión
+    if (data === token.ENQ) {
+        console.log("EQUIPO → ACK");
+
+        setTimeout(() => {
+            port.write(token.ACK);
+        }, 200); // pequeño delay realista
+        return;
+    }
+
+    // 2️⃣ Host envía mensaje ASTM
+    if (data.startsWith(token.STX)) {
+        console.log("EQUIPO → ACK (mensaje recibido)");
+
+        setTimeout(() => {
+            port.write(token.ACK);
+        }, 150);
+        return;
+    }
+
+    // 3️⃣ Fin transmisión
+    if (data === token.EOT) {
+        console.log("EQUIPO → sesión finalizada");
+        return;
+    }
+});
\ No newline at end of file
diff --git a/simulacion/virtualLink.js b/simulacion/virtualLink.js
new file mode 100644
index 0000000..b015359
--- /dev/null
+++ b/simulacion/virtualLink.js
@@ -0,0 +1,14 @@
+const FakeSerialPort = require('./fakeSerialPort');
+
+function createVirtualSerialPair() {
+
+    const portA = new FakeSerialPort("APP");
+    const portB = new FakeSerialPort("SIMULATOR");
+
+    portA.connect(portB);
+    portB.connect(portA);
+
+    return { portA, portB };
+}
+
+module.exports = createVirtualSerialPair;
\ No newline at end of file