diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
index 2808971..eda5a95 100644
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -2,11 +2,13 @@
   <profile version="1.0">
     <option name="myName" value="Project Default" />
     <inspection_tool class="AiaStyle" enabled="false" level="TYPO" enabled_by_default="false" />
+    <inspection_tool class="FunctionName" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
     <inspection_tool class="GrazieInspection" enabled="false" level="GRAMMAR_ERROR" enabled_by_default="false" />
     <inspection_tool class="LanguageDetectionInspection" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
     <inspection_tool class="LocalVariableName" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
     <inspection_tool class="MethodNameSameAsClassName" enabled="false" level="WARNING" enabled_by_default="false" />
     <inspection_tool class="PrivatePropertyName" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
+    <inspection_tool class="PropertyName" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
     <inspection_tool class="SpellCheckingInspection" enabled="false" level="TYPO" enabled_by_default="false">
       <option name="processCode" value="true" />
       <option name="processLiterals" value="true" />
diff --git a/src/Main.kt b/src/Main.kt
index d7151bf..641859f 100644
--- a/src/Main.kt
+++ b/src/Main.kt
@@ -5,4 +5,5 @@ import zello.ZelloClient
 fun main() {
     val z = ZelloClient.fromConsumerZello()
 
+
 }
\ No newline at end of file
diff --git a/src/zello/LogonCommand.kt b/src/zello/LogonCommand.kt
new file mode 100644
index 0000000..a07b8fc
--- /dev/null
+++ b/src/zello/LogonCommand.kt
@@ -0,0 +1,64 @@
+package zello
+
+import com.fasterxml.jackson.annotation.JsonPropertyOrder
+
+@Suppress("unused")
+@JsonPropertyOrder(value=["command","seq","auth_token","refresh_token","username","password","channels","listen_only","version","platform_type","platform_name"])
+class LogonCommand(val seq: Int, val auth_token: String?, val refresh_token: String?, val username: String?, val password: String?, val channels: Array<String>, val listen_only: Boolean?, val version: String?, val platform_type: String?, val platform_name:String?) {
+    val command: String = "logon"
+    companion object {
+        /**
+         * Creates a LogonCommand with the specified sequence number and channels.
+         * auth_token, refresh_token, username, password, listen_only, version, platform_type, platform_name are omitted
+         * @param seq The sequence number for the command.
+         * @param channels An array of channel names to log on to.
+         * @return A new instance of LogonCommand.
+         */
+        fun create(seq: Int, channels: Array<String>): LogonCommand {
+            return LogonCommand(seq, null, null, null, null, channels, null, null, null, null)
+        }
+
+        /**
+         * Creates a LogonCommand with the specified sequence number, channels, and auth_token.
+         * refresh_token, username, password, listen_only, version, platform_type, platform_name are omitted
+         * @param seq The sequence number for the command.
+         * @param channels An array of channel names to log on to.
+         * @param auth_token API authentication token. If omitted refresh_token is required when connecting to consumer Zello
+         *
+         * See [Zello API](https://github.com/zelloptt/zello-channel-api/blob/master/API.md#authentication)
+         * @return A new instance of LogonCommand.
+         */
+        fun create(seq: Int, channels: Array<String>, auth_token: String?): LogonCommand {
+            return LogonCommand(seq, auth_token, null, null, null, channels, null, null, null, null)
+        }
+
+        /**
+         * Creates a LogonCommand with the specified sequence number, channels, auth_token, username, and password.
+         * refresh_token, listen_only, version, platform_type, platform_name are omitted
+         * @param seq The sequence number for the command.
+         * @param channels An array of channel names to log on to.
+         * @param auth_token API authentication token. If omitted refresh_token is required when connecting to consumer Zello
+         * @param username Username for authentication.
+         * @param password Password for authentication.
+         * @return A new instance of LogonCommand.
+         */
+        fun create(seq: Int, channels: Array<String>, auth_token: String?, username: String?, password: String?): LogonCommand {
+            return LogonCommand(seq, auth_token, null, username, password, channels, null, null, null, null)
+        }
+
+        /**
+         * Creates a LogonCommand with the specified sequence number, channels, auth_token, refresh_token, username, and password.
+         * listen_only, version, platform_type, platform_name are omitted
+         * @param seq The sequence number for the command.
+         * @param channels An array of channel names to log on to.
+         * @param auth_token API authentication token. If omitted refresh_token is required when connecting to consumer Zello
+         * @param refresh_token API refresh token. If omitted auth_token  is required when connecting to consumer Zello.
+         * @param username Username for authentication.
+         * @param password Password for authentication.
+         * @return A new instance of LogonCommand.
+         */
+        fun create(seq: Int, channels: Array<String>, auth_token: String?, refresh_token: String?, username: String?, password: String?): LogonCommand {
+            return LogonCommand(seq, auth_token, refresh_token, username, password, channels, null, null, null, null)
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/zello/LogonReply.kt b/src/zello/LogonReply.kt
new file mode 100644
index 0000000..35a203c
--- /dev/null
+++ b/src/zello/LogonReply.kt
@@ -0,0 +1,9 @@
+package zello
+
+@Suppress("unused")
+class LogonReply {
+    var seq: Int = 0
+    var success : Boolean? = null
+    var refresh_token: String? = null
+    var error: String? = null
+}
\ No newline at end of file
diff --git a/src/zello/ZelloClient.kt b/src/zello/ZelloClient.kt
index c8c0740..a4c44cb 100644
--- a/src/zello/ZelloClient.kt
+++ b/src/zello/ZelloClient.kt
@@ -2,11 +2,18 @@ package zello
 
 import org.java_websocket.client.WebSocketClient
 import org.java_websocket.handshake.ServerHandshake
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
 import java.lang.Exception
 import java.net.URI
 
 @Suppress("unused")
-class ZelloClient(address : URI) : WebSocketClient(address) {
+/**
+ * ZelloClient is a WebSocket client for connecting to Zello services.
+ * [Source](https://github.com/zelloptt/zello-channel-api/blob/master/API.md)
+ *
+ */
+class ZelloClient(val address : URI) {
     companion object {
         fun fromConsumerZello() : ZelloClient {
             return ZelloClient(URI.create("wss://zello.io/ws"))
@@ -21,25 +28,44 @@ class ZelloClient(address : URI) : WebSocketClient(address) {
         }
     }
 
+    private var client : WebSocketClient? = null
+
     // this key is temporary, valid only 30 days from 2025-07-29
     // if need to create, from https://developers.zello.com/keys
     private val developerKey : String  = "eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiJ9.eyJpc3MiOiJXa002Y21ScllYSjBiMjV2T2pFLi1yYjJ2THFRbUhYV3dKY2I2azl2TDdUMEtzRWZMRjcxZm5jcktTZ0s2ZE0iLCJleHAiOjE3NTY0MzIyMTIsImF6cCI6ImRldiJ9.ANK7BIS6WVVWsQRjcZXyGWrV2RodCUQD4WXWaA6E4Dlyy8bBCMFdbiKN2D7B_x729HQULailnfRhbXF4Avfg14qONdc1XE_0iGiPUO1kfUSgdd11QylOzjxy6FTKSeZmHOh65JZq2dIWxobCcva-RPvbR8TA656upHh32xrWv9zlU0N707FTca04kze0Iq-q-uC5EL82yK10FEvOPDX88MYy71QRYi8Qh_KbSyMcYAhe2bTsiyjm51ZH9ntkRHd0HNiaijNZI6-qXkkp5Soqmzh-bTtbbgmbX4BT3Qpz_IP3epaX3jl_Aq5DHxXwCsJ9FThif9um5D0TWVGQteR0cQ"
-    override fun onOpen(handshakedata: ServerHandshake?) {
-        TODO("Not yet implemented")
+    private val logger : Logger = LoggerFactory.getLogger(ZelloClient::class.java)
+    var isConnected : Boolean = false
 
+    fun Start(){
+        client = object : WebSocketClient(address) {
+            override fun onOpen(handshakedata: ServerHandshake?) {
+                logger.info("Connected to $address")
+                isConnected = true
+
+            }
+
+            override fun onMessage(message: String?) {
+                logger.info("Message received: $message")
+            }
+
+            override fun onClose(code: Int, reason: String?, remote: Boolean) {
+                logger.info("Closed from ${if (remote) "Remote side" else "Local side"}, Code=$code, Reason=$reason")
+                isConnected = false
+            }
+
+            override fun onError(ex: Exception?) {
+                logger.error("Error occurred: ${ex?.message}")
+            }
+        }
+        client?.connect()
     }
 
-    override fun onMessage(message: String?) {
-        TODO("Not yet implemented")
+    fun Stop(){
+        client?.close()
     }
 
-    override fun onClose(code: Int, reason: String?, remote: Boolean) {
-        TODO("Not yet implemented")
-    }
 
-    override fun onError(ex: Exception?) {
-        TODO("Not yet implemented")
-    }
+
 
 
 }