diff --git a/lib/AmiClient.js b/lib/AmiClient.js
index 17aab0d..8a61ff1 100644
--- a/lib/AmiClient.js
+++ b/lib/AmiClient.js
@@ -11,6 +11,24 @@ const amiConnector = require('asterisk-ami-connector');
 const debugLog = require('debug')('AmiClient');
 const debugError = require('debug')('AmiClient:error');
 
+class AmiHeader {
+    constructor(name, value) {
+        this.name = name;
+        this.value = value;
+    }
+}
+
+class MultivalAction {
+    constructor(action) {
+        this.headers = [ new AmiHeader('Action', action) ];
+    }
+
+    toString() {
+        var lines = this.headers.map(header => header.name + ': ' + header.value);
+        return lines.join('\r\n');
+    }
+}
+
 /**
  * AmiClient class
  */
@@ -27,6 +45,8 @@ class AmiClient extends EventEmitter{
             _connector: null,
             _kaTimer: null,
             _kaActionId: null,
+            _lastKa: 0,
+            _lastKaResponse: 0,
             _options: Object.assign({
                 reconnect: false,
                 maxAttemptsCount: 30,
@@ -97,7 +117,7 @@ class AmiClient extends EventEmitter{
                     .on('response', response => {
                         if(this._options.keepAlive && response.ActionID === this._kaActionId){
                             debugLog('keep-alive heart bit');
-                            this._keepAliveBit();
+                            this._lastKaResponse = this._now();
                             return;
                         }
 
@@ -120,7 +140,7 @@ class AmiClient extends EventEmitter{
                     .on('data', chunk => this.emit('data', chunk))
                     .on('error', error => this.emit('internalError', error))
                     .on('close', () => {
-                        clearTimeout(this._kaTimer);
+                        clearInterval(this._kaTimer);
                         this.emit('disconnect');
                         this._prEmitter.emit('disconnect');
                         setTimeout(() => {
@@ -138,6 +158,8 @@ class AmiClient extends EventEmitter{
                     });
 
                 if(this._options.keepAlive){
+                    this._lastKa = 0;
+                    this._lastKaResponse = 0;
                     this._keepAliveBit();
                 }
                 return this._connection;
@@ -149,7 +171,7 @@ class AmiClient extends EventEmitter{
      */
     disconnect(){
         this._userDisconnect = true;
-        clearTimeout(this._kaTimer);
+        clearInterval(this._kaTimer);
         this.emit('disconnect');
         if(this._connection){
             this._connection.close();
@@ -175,6 +197,10 @@ class AmiClient extends EventEmitter{
             message.ActionID = this._genActionId(this._specPrefix);
         }
 
+        if(message.constructor == MultivalAction) {
+            message = message.toString();
+        }
+
         if(promisable){
             return this._promisable(message);
         }
@@ -239,18 +265,31 @@ class AmiClient extends EventEmitter{
         return this._prepareOptions();
     }
 
+
+    _now(){
+        return Math.floor(Date.now()/1000);
+    }
     /**
      * Keep-alive heart bit handler
      * @private
      */
     _keepAliveBit(){
-        this._kaTimer = setTimeout(() => {
+        this._kaTimer = setInterval(() => {
             if(this._options.keepAlive && this._connection && this.isConnected){
+                if(this._lastKa > 0 && this._lastKaResponse < this._lastKa) {
+                    /* Asterisk manager did not reply - let's disconnect */
+                    debugLog("disconnect on KA timer");
+                    this.disconnect();
+                    /* reset the _userDisconnect flag so that we reconnect automatically */
+                    this._userDisconnect = false;
+                    return;
+                }
                 this._kaActionId = this._genActionId(this._specPrefix);
                 this._connection.write({
                     Action: 'Ping',
                     ActionID: this._kaActionId
                 });
+                this._lastKa = this._now();
             }
         }, this._options.keepAliveDelay);
         this._kaTimer.unref();
@@ -295,6 +334,14 @@ class AmiClient extends EventEmitter{
         return true;
     }
 
+    /**
+     *
+     * @private
+     */
+    _random() {
+        return Math.floor(Math.random() * Math.pow(10, 10));
+    }
+
     /**
      *
      * @param prefix
@@ -303,7 +350,7 @@ class AmiClient extends EventEmitter{
      */
     _genActionId(prefix){
         prefix = prefix || '';
-        return `${prefix}${Date.now()}`;
+        return `${prefix}${Date.now()}-${this._random()}`;
     }
 
     /**
@@ -383,6 +430,21 @@ class AmiClient extends EventEmitter{
     get connection(){
         return this._connection;
     }
+
+    /**
+     *
+     * @returns {MultivalAction}
+     */
+    multivalAction(action){
+        var result = new MultivalAction(action);
+        return new Proxy(result, {
+            set: function(target, property, value) {
+                target.headers.push(new AmiHeader(property, value));
+                return true;
+            }
+        });
+    }
+
 }
 
-module.exports = AmiClient;
\ No newline at end of file
+module.exports = AmiClient;
diff --git a/test/amiClientTest.js b/test/amiClientTest.js
index 71be1da..2523202 100644
--- a/test/amiClientTest.js
+++ b/test/amiClientTest.js
@@ -577,7 +577,8 @@ describe('Ami Client internal functionality', function(){
             client = new AmiClient({dontDeleteSpecActionId: true});
             client.connect(USERNAME, SECRET, {port: socketOptions.port}).then(() => {
                 client.once('response', response => {
-                    assert.ok(/^--spec_\d{13}$/.test(response.ActionID));
+                    console.log("actionid = ", response.ActionID);
+                    assert.ok(/^--spec_\d{13}-\d{1,10}$/.test(response.ActionID));
                     done();
                 })
                 .action({Action: 'Ping'});
@@ -741,5 +742,29 @@ describe('Ami Client internal functionality', function(){
 
     });
 
+    describe('multivalAction', function(){
+
+        beforeEach(done => {
+            client = new AmiClient({});
+            server = new AmiTestServer(serverOptions);
+            server.listen(socketOptions).then(done);
+        });
+
+        it('multivalAction handles multiple headers with the same name', done => {
+            let action = client.multivalAction('MessageSend');
+            action.Variable = 'VAR1=val1';
+            action.Variable = 'VAR2=val2';
+            client.connect(USERNAME, SECRET, {port: socketOptions.port}).then(() => {
+                client._connection.write = function(data) {
+                    assert(data.match(/Action: MessageSend/));
+                    assert(data.match(/Variable: VAR1=val1/));
+                    assert(data.match(/Variable: VAR2=val2/));
+                    assert(data.match(/ActionID:/));
+                    done();
+                };
+                client.action(action);
+            });
+        });
+    });
 });