diff --git a/client/modules/serviceHandler.mjs b/client/modules/serviceHandler.mjs
new file mode 100644
index 0000000..5a714e7
--- /dev/null
+++ b/client/modules/serviceHandler.mjs
@@ -0,0 +1,52 @@
+import { exec } from 'child_process';
+
+/**
+ * Starts the given service from the command line.
+ * @param {string} serviceName The service name to be started. Ex: ... start "{serviceName}.service"
+ * @returns {Promise<void>}
+ */
+export const startService = async (serviceName) => {
+    return new Promise((resolve, reject) => {
+        exec(`sudo systemctl start ${serviceName}.service`, (error, stdout, stderr) => {
+            if (error) {
+                reject(error);
+            } else {
+                resolve();
+            }
+        });
+    });
+};
+
+/**
+ * Restarts the given service from the command line.
+ * @param {string} serviceName The service name to be restarted. Ex: ... restart "{serviceName}.service"
+ * @returns {Promise<void>}
+ */
+export const restartService = async (serviceName) => {
+    return new Promise((resolve, reject) => {
+        exec(`sudo systemctl restart ${serviceName}.service`, (error, stdout, stderr) => {
+            if (error) {
+                reject(error);
+            } else {
+                resolve();
+            }
+        });
+    });
+};
+
+/**
+ * Stops the given service from the command line.
+ * @param {string} serviceName The service name to be stopped. Ex: ... stop "{serviceName}.service"
+ * @returns {Promise<void>}
+ */
+export const stopService = async (serviceName) => {
+    return new Promise((resolve, reject) => {
+        exec(`sudo systemctl stop ${serviceName}.service`, (error, stdout, stderr) => {
+            if (error) {
+                reject(error);
+            } else {
+                resolve();
+            }
+        });
+    });
+};
\ No newline at end of file
diff --git a/client/op25Handler/modules/op25ConfigGenerators.mjs b/client/op25Handler/modules/op25ConfigGenerators.mjs
index 8ae0740..6fdb9e4 100644
--- a/client/op25Handler/modules/op25ConfigGenerators.mjs
+++ b/client/op25Handler/modules/op25ConfigGenerators.mjs
@@ -17,18 +17,19 @@ class OP25ConfigObject {
 export class P25ConfigGenerator extends OP25ConfigObject {
     constructor({ systemName, controlChannels, tagsFile, whitelistFile = undefined }) {
         super();
+        console.log("Generating P25 Config for:", systemName);
         const controlChannelsString = controlChannels.join(',');
-        this.channels = new channelConfig({
+        this.channels = [new channelConfig({
             "channelName": systemName,
             "systemName": systemName,
             "enableAnalog": "off",
             "demodType": "cqpsk",
             "cqpskTracking": true,
             "filterType": "rc"
-        });
-        this.devices = new deviceConfig({
+        })];
+        this.devices = [new deviceConfig({
             "gain": "LNA:36"
-        });
+        })];
         this.trunking = new trunkingConfig({
             "module": "tk_p25.py",
             "systemName": systemName,
@@ -149,7 +150,7 @@ class trunkingConfig {
 }
 
 class audioConfig {
-    constructor({ module = "sockaudio.py", port = 23456, deviceName = "default" }) {
+    constructor({ module = "sockaudio.py", port = 23457, deviceName = "default" }) {
         this.module = module;
         this.instances = [{
             "instance_name": "audio0",
@@ -169,7 +170,7 @@ class metadataStreamConfig {
 }
 
 class terminalConfig {
-    constructor({ module = "terminal.py", terminalType = "http:0.0.0.0:8080" }) {
+    constructor({ module = "terminal.py", terminalType = "http:0.0.0.0:8081" }) {
         this.module = module;
         this.terminal_type = terminalType;
         this.curses_plot_interval = 0.1;
diff --git a/client/op25Handler/op25Handler.mjs b/client/op25Handler/op25Handler.mjs
index 5064552..07f51d9 100644
--- a/client/op25Handler/op25Handler.mjs
+++ b/client/op25Handler/op25Handler.mjs
@@ -1,14 +1,84 @@
+import { P25ConfigGenerator, NBFMConfigGenerator } from './modules/op25ConfigGenerators.mjs';
+import { getAllPresets } from '../modules/radioPresetHandler.mjs';
+import { startService, stopService } from '../modules/serviceHandler.mjs';
+
+import dotenv from 'dotenv';
+dotenv.config()
+
 let currentSystem = undefined;
 
+/**
+ * Creates configuration based on the preset and restarts the OP25 service.
+ * @param {Object} preset The preset object containing system configuration.
+ * @returns {Promise<void>}
+ */
+const createConfigAndRestartService = async (systemName, preset) => {
+    const { mode, frequencies, trunkFile, whitelistFile } = preset;
 
+    let generator;
+    if (mode === 'p25') {
+        console.log("Using P25 Config Generator based on preset mode", systemName, mode);
+        generator = new P25ConfigGenerator({
+            systemName,
+            controlChannels: frequencies,
+            tagsFile: trunkFile,
+            whitelistFile: whitelistFile !== 'none' ? whitelistFile : undefined
+        });
+    } else if (mode === 'nbfm') {
+        console.log("Using NBFM Config Generator based on preset mode", systemName, mode);
+        generator = new NBFMConfigGenerator({
+            systemName,
+            frequencies,
+            tagsFile: trunkFile
+        });
+    } else {
+        throw new Error(`Unsupported mode: ${mode}`);
+    }
+
+    const op25FilePath = process.env.OP25_FULL_PATH || './'; // Default to current directory if OP25_FULL_PATH is not set
+    const op25ConfigPath = `${op25FilePath}${op25FilePath.endsWith('/') ? 'active.cfg.json' : '/active.cfg.json'}`;
+    await generator.exportToFile(op25ConfigPath);
+
+    // Restart the service
+    await stopService('op25');
+    await startService('op25');
+};
+
+/**
+ * Opens the OP25 service for the specified system.
+ * @param {string} systemName The name of the system to open.
+ * @returns {Promise<void>}
+ */
 export const openOP25 = async (systemName) => {
     currentSystem = systemName;
-}
 
+    // Retrieve preset for the specified system name
+    const presets = await getAllPresets();
+    const preset = presets[systemName];
+
+    console.log("Found preset:", preset);
+
+    if (!preset) {
+        throw new Error(`Preset for system "${systemName}" not found.`);
+    }
+
+    await createConfigAndRestartService(systemName, preset);
+};
+
+
+/**
+ * Closes the OP25 service.
+ * @returns {Promise<void>}
+ */
 export const closeOP25 = async () => {
     currentSystem = undefined;
-}
+    await stopService('op25');
+};
 
+/**
+ * Gets the current system.
+ * @returns {Promise<string | undefined>} The name of the current system.
+ */
 export const getCurrentSystem = async () => {
     return currentSystem;
-}
\ No newline at end of file
+};
\ No newline at end of file