diff --git a/Layout/default/menu.php b/Layout/default/menu.php
index 01426c782..89b64c5fe 100644
--- a/Layout/default/menu.php
+++ b/Layout/default/menu.php
@@ -130,6 +130,7 @@
               <?php if($me->isAdmin() || $me->can("Cpeshipping")): ?><li><a href="<?=self::getUrl("Cpeshipping")?>"><i class="fad fa-fw fa-shipping-fast text-info"></i> CPE Versand</a></li><?php endif; ?>
               <?php if($me->isAdmin()) : ?><li><a href="<?=self::getUrl("Domain")?>"><i class="fad fa-fw fa-globe text-info"></i> Domains</a></li><?php endif; ?>
               <?php if($me->isAdmin()) : ?><li><a href="<?=self::getUrl("IpNetwork")?>"><i class="fa-solid fa-network-wired text-info"></i> IPAM</a></li><?php endif; ?>
+              <?php if($me->isAdmin()) : ?><li><a href="<?=self::getUrl("DeviceMonitoring/congestion")?>"><i class="fa-solid fa-block-brick-fire text-info"></i> Device Congestion</a></li><?php endif; ?>
             </ul>
           </li>
           <?php endif; ?>
diff --git a/application/DeviceMonitoring/DeviceMonitoring.php b/application/DeviceMonitoring/DeviceMonitoring.php
new file mode 100644
index 000000000..453aacd12
--- /dev/null
+++ b/application/DeviceMonitoring/DeviceMonitoring.php
@@ -0,0 +1,9 @@
+<?php
+
+/**
+ * @property mixed|null $name
+ */
+class DeviceMonitoring extends mfBaseModel
+{
+
+}
\ No newline at end of file
diff --git a/application/DeviceMonitoring/DeviceMonitoringController.php b/application/DeviceMonitoring/DeviceMonitoringController.php
new file mode 100644
index 000000000..cc98cfcb4
--- /dev/null
+++ b/application/DeviceMonitoring/DeviceMonitoringController.php
@@ -0,0 +1,151 @@
+<?php
+
+class DeviceMonitoringController extends mfBaseController {
+    private User $me;
+    private string $ZABBIX_API_URL = ZABBIX_API_URL;
+    private string $ZABBIX_API_KEY = ZABBIX_API_KEY;
+
+    private Zabbix $zabbix;
+
+
+    protected function init(): void {
+        $me = new User();
+        $me->loadMe();
+        $this->layout()->set("me", $me);
+        $this->me = $me;
+
+        if (!$this->me->isAdmin()) {
+            $this->redirect("dashboard");
+        }
+
+        $this->zabbix = new Zabbix($this->ZABBIX_API_URL, $this->ZABBIX_API_KEY);
+
+    }
+
+    protected function congestionAction() {
+        $congestionData = $this->getCongestionData();
+
+        Helper::renderVue($this, "DeviceMonitoringCongestion", $this->mod,
+            ["CONGESTION_DATA" => $congestionData]);
+    }
+
+    public function getCongestionData(): array {
+        $filename = TEMP_DIR . "/DeviceMonitoring/interfacesWithCongestion.json";
+
+        // if file is older than 50 minutes, fetch new data
+        if (file_exists($filename) && (time() - filemtime($filename)) < 3000) {
+            $interfacesWithCongestion = json_decode(file_get_contents($filename), true);
+            $fileCreateTime = date("Y-m-d H:i:s", filemtime($filename));
+
+            return ["interfacesWithCongestion" => $interfacesWithCongestion, "fileCreateTime" => $fileCreateTime];
+        }
+
+        $congestionInterfaces = $this->zabbix->getAllCongestionInterfaces();
+
+        $interfacesWithCongestion = [];
+
+        $fetchedHosts = [];
+
+        foreach ($congestionInterfaces as $interface) {
+            $itemId = $interface['itemid'];
+            $name = $interface['name'];
+            $name = str_replace(": Congestion Packets", "", $name);
+            $hostId = $interface['hostid'];
+
+            $values = $this->zabbix->getItemValues($itemId);
+
+            $highestValue = 0;
+            $highestValueTime = 0;
+            foreach ($values as $value) {
+                if ($value['value'] > $highestValue) {
+                    $highestValue = $value['value'];
+                    $highestValueTime = $value['clock'];
+                }
+            }
+
+            // if highest value is 0, then there is no congestion
+            if ($highestValue == 0) {
+                continue;
+            }
+
+            if (in_array($hostId, $fetchedHosts)) {
+                $host = $fetchedHosts[$hostId];
+            } else {
+                $host = $this->zabbix->getHostById($hostId);
+                $fetchedHosts[$hostId] = $host;
+            }
+
+            $hostname = $host[0]['name'];
+            $ip = $host[0]['host'];
+
+
+            $interfacesWithCongestion[] = [
+                "hostname" => $hostname,
+                "ip" => $ip,
+                "name" => $name,
+                "zabbixUrl" => ZABBIX_URL . "/zabbix.php?action=latest.view&hostids%5B%5D=" . $hostId,
+                "grafanaUrl" => GRAFANA_URL . "/d/Ta3PtRWZk/mikrotik-dashboard?orgId=1&var-host=" . $hostname,
+                "highestValue" => $highestValue,
+                "highestValueTime" => $highestValueTime
+            ];
+        }
+
+        if (!file_exists(TEMP_DIR . "/DeviceMonitoring")) {
+            mkdir(TEMP_DIR . "/DeviceMonitoring");
+        }
+
+        file_put_contents($filename, json_encode($interfacesWithCongestion));
+        return ["interfacesWithCongestion" => $interfacesWithCongestion, "fileCreateTime" => date("Y-m-d H:i:s")];
+    }
+
+
+    protected function indexAction(): void {
+        $JSGlobals = ["BASE_URL" => self::getUrl("VoiceCallActive"),
+                      "DASHBOARD_URL" => self::getUrl("Dashboard"),
+                      "MFAPPNAME" => MFAPPNAME_SLUG,
+                      "PAGE_TITLE" => "Active Voice Calls",
+                      "PATH" => [
+                          ["text" => MFAPPNAME_SLUG, "href" => self::getUrl("Dashboard")],
+                          ["text" => "Active Voice Calls", "href" => self::getUrl("VoiceCallActive")]
+                      ],
+                      "VOICE_CALL_ACTIVE_API_URL" => self::getUrl("VoiceCallActive/api"),
+        ];
+
+        $this->layout()->set("additionalCSS", ["css/views/VoiceCallActive.css"]);
+        $this->layout()->set("vueViewName", "VoiceCallActive");
+        $this->layout()->set("JSGlobals", $JSGlobals);
+        $this->layout()->setTemplate("VueViews/Vue");
+    }
+
+    protected function apiAction() {
+        $do = $this->request->do;
+
+        if (!$this->me->isAdmin()) {
+            $this->redirect("dashboard");
+        }
+
+        switch ($do) {
+            case "getActiveCalls":
+                $return = $this->getActiveCalls();
+                break;
+            default:
+                $return = false;
+                break;
+        }
+
+        if (!$return) {
+            $return = [
+                "status" => "error",
+                "message" => "Invalid request."
+            ];
+        }
+
+        die(json_encode($return));
+    }
+
+    private function getActiveCalls(): array {
+        $activeCalls = $this->kolmisoftMore->getActiveCalls();
+
+        return is_null($activeCalls) ? [] : (is_object($activeCalls) ? [$activeCalls] : $activeCalls);
+    }
+}
\ No newline at end of file
diff --git a/lib/Zabbix/Zabbix.php b/lib/Zabbix/Zabbix.php
new file mode 100644
index 000000000..cbe21ddc1
--- /dev/null
+++ b/lib/Zabbix/Zabbix.php
@@ -0,0 +1,97 @@
+<?php
+
+class Zabbix {
+    private $url;
+    private $apiKey;
+
+    public function __construct($url, $apiKey) {
+        $this->url = $url;
+        $this->apiKey = $apiKey;
+    }
+
+    public function zabbixRequest($method, $params) {
+        $data = array(
+            'jsonrpc' => '2.0',
+            'method' => $method,
+            'params' => $params,
+            'id' => 1
+        );
+
+        $options = array(
+            'http' => array(
+                'header' => "Content-Type: application/json\r\n" .
+                    "Authorization: Bearer " . $this->apiKey . "\r\n",
+                'method' => 'POST',
+                'content' => json_encode($data)
+            )
+        );
+
+        $context = stream_context_create($options);
+        $result = file_get_contents($this->url, false, $context);
+
+        return json_decode($result, true);
+    }
+
+    public function getAllCongestionInterfaces() {
+        $response = $this->zabbixRequest('item.get', array(
+            'search' => array('name' => array("Congestion")),
+        ));
+        return $response['result'];
+    }
+
+    public function getHostById($hostId) {
+        $response = $this->zabbixRequest('host.get', array(
+            'hostids' => $hostId
+        ));
+        return $response['result'];
+    }
+
+    public function getItemValues($itemIds) {
+        $response = $this->zabbixRequest('history.get', array(
+            'itemids' => $itemIds,
+            'output' => 'extend',
+            'sortfield' => 'clock',
+            'sortorder' => 'DESC',
+            'limit' => 15
+        ));
+        return $response['result'];
+    }
+
+    public function getHosts($hostname) {
+        $response = $this->zabbixRequest('host.get', array(
+            'search' => array('name' => array($hostname))
+        ));
+        return $response['result'];
+    }
+
+    public function getInterfaceItems($hostId, $interfaceName) {
+        $response = $this->zabbixRequest('item.get', array(
+            'hostids' => $hostId,
+            'search' => array('name' => array($interfaceName, "Bits"))
+        ));
+        return $response['result'];
+    }
+
+    public function getUptimeItems($hostId) {
+        $response = $this->zabbixRequest('item.get', array(
+            'hostids' => $hostId,
+            'search' => array('name' => array("Uptime"))
+        ));
+        return $response['result'];
+    }
+
+    public function getHostInterfaces($hostIds) {
+        $response = $this->zabbixRequest('hostinterface.get', array('hostids' => $hostIds));
+        return $response['result'];
+    }
+
+    public function createTask($itemid) {
+        $response = $this->zabbixRequest('task.create', array(
+            'type' => 6,
+            'request' => array(
+                'itemid' => $itemid
+            )
+        ));
+        return $response['result'];
+    }
+}
diff --git a/public/js/pages/DeviceMonitoringCongestion/DeviceMonitoringCongestion.js b/public/js/pages/DeviceMonitoringCongestion/DeviceMonitoringCongestion.js
new file mode 100644
index 000000000..0a2d83b09
--- /dev/null
+++ b/public/js/pages/DeviceMonitoringCongestion/DeviceMonitoringCongestion.js
@@ -0,0 +1,41 @@
+Vue.component('device-monitoring-congestion', {
+    //language=Vue
+    template: `
+
+                <tt-card>
+                  <!--@formatter:off-->
+                  <div>Letzte Abfragezeit: {{ window.moment.utc(window['TT_CONFIG']['CONGESTION_DATA']['fileCreateTime']).add(1, 'hours').format('DD.MM.YYYY HH:mm:ss') }}</div>
+                  <!--@formatter:on-->
+                  <tt-table :data="window['TT_CONFIG']['CONGESTION_DATA']['interfacesWithCongestion']" :config="DeviceTableConfig" excel-export>
+
+                    <template v-slot:actions="{ row }">
+                      <a :href="row.zabbixUrl" target="_blank"><i class="fas fa-chart-line" title="Zabbix"></i></a>
+                      <a :href="row.grafanaUrl" target="_blank"><i class="fas fa-chart-bar" title="Grafana"></i></a>
+                    </template>
+
+                    <template v-slot:highestvaluetime="{ row }">
+                      {{ window.moment.unix(row.highestValueTime).format('DD.MM.YYYY HH:mm:ss') }}
+                    </template>
+
+                  </tt-table>
+                </tt-card>
+              `,
+    data() {
+        return {
+            window:            window,
+            DeviceTableConfig: {
+                key:             'DeviceMonitoringCongestion',
+                tableHeader:     'Device Monitoring - Congestion',
+                defaultPageSize: 25,
+                headers:         [
+                    {text: 'Hostname', key: 'hostname', sortable: true, class: 'text-nowrap'},
+                    {text: 'IP-Adresse', key: 'ip', filter: 'search', class: 'text-center'},
+                    {text: 'Name', key: 'name', filter: 'search', class: 'text-center'},
+                    {text: 'Höchster Wert', key: 'highestValue', filter: 'search', class: 'text-center'},
+                    {text: 'Zeit', key: 'highestValueTime', filter: 'search', class: 'text-center'},
+                    {text: 'Aktionen', key: 'actions', class: 'text-center', sortable: false, filter: false, priority: 9},
+                ],
+            },
+        }
+    }
+})
\ No newline at end of file
diff --git a/scripts/monitoring/run-device-congestion-cache.php b/scripts/monitoring/run-device-congestion-cache.php
new file mode 100644
index 000000000..f51c54941
--- /dev/null
+++ b/scripts/monitoring/run-device-congestion-cache.php
@@ -0,0 +1,21 @@
+#!/usr/bin/php
+<?php
+
+//require 'vendor/autoload.php';
+require("../../config/config.php");
+
+define('FRONKDB_SQLDEBUG',false);
+error_reporting(E_ALL & ~(E_NOTICE | E_STRICT | E_DEPRECATED));
+
+require_once(LIBDIR."/mvcfronk/mfRouter/mfRouter.php");
+require_once(LIBDIR."/mvcfronk/mfBase/mfBaseModel.php");
+require_once(LIBDIR."/mvcfronk/mfBase/mfBaseController.php");
+
+$me = new User(1);
+
+define("INTERNAL_USER_ID", $me->id);
+define("INTERNAL_USER_USERNAME", $me->username);
+
+$DeviceMonitoringController = new DeviceMonitoringController(false);
+
+$DeviceMonitoringController->getCongestionData();
\ No newline at end of file