diff --git a/include/NetTransport.h b/include/NetTransport.h
index d00370a..044f763 100644
--- a/include/NetTransport.h
+++ b/include/NetTransport.h
@@ -63,6 +63,8 @@ void PPPModemColdStart(void);
 void PPPModemSoftRestart(void);
 void PPPModemStart(void);
 
+void PPPModemGetRSSI(void);
+
 void MQTTRun(void);
 
 MODEM_INFO* GetPPPModemInfo(void);
diff --git a/src/GSMTransport.c b/src/GSMTransport.c
index f097400..10fdb14 100644
--- a/src/GSMTransport.c
+++ b/src/GSMTransport.c
@@ -237,12 +237,22 @@ static void GSMInitTask(void *pvParameter)
     }
     ESP_LOGI(TAG, "IMEI:%s", mod_info.imei);
 
-    while (esp_modem_set_mode(dce, ESP_MODEM_MODE_DATA) != ESP_OK)
+    while (esp_modem_set_mode(dce, ESP_MODEM_MODE_CMUX) != ESP_OK)
     {
         if (++GSMConnectTimeout >= PPP_MODEM_TIMEOUT)
             goto modem_init_fail;
         vTaskDelay(pdMS_TO_TICKS(1000));
     }
+/*
+    while (esp_modem_set_mode(dce, ESP_MODEM_MODE_CMUX_MANUAL_DATA) != ESP_OK)
+    {
+        if (++GSMConnectTimeout >= PPP_MODEM_TIMEOUT)
+            goto modem_init_fail;
+        vTaskDelay(pdMS_TO_TICKS(1000));
+    }
+*/
+
+
 
     ESP_LOGI(TAG, "PPP data mode OK");
 
@@ -288,5 +298,12 @@ void PPPModemStart(void)
     xTaskCreate(GSMRunTask, "GSMRunTask", 1024 * 4, &ResetType, 3, NULL);
 }
 
+void PPPModemGetRSSI(void)
+{
+    int rssi, ber;
+    esp_modem_get_signal_quality(dce, &rssi, &ber);
+    ESP_LOGW(TAG, "Signal %d, ber %d", rssi, ber);
+}
+
 #endif
 
diff --git a/src/HTTPPostSystem.c b/src/HTTPPostSystem.c
index 39750b4..eeade8c 100644
--- a/src/HTTPPostSystem.c
+++ b/src/HTTPPostSystem.c
@@ -451,15 +451,16 @@ static HTTP_IO_RESULT HTTPPostSystemSettings(httpd_req_t *req, char *PostData)
         if (!strcmp(tmp, (const char*) "1"))
         {
             ESP_LOGI(TAG, "Got command F1 send test lora");
-            const char test[] = {"LoRaWAN test message"};
+            const char test[] = { "LoRaWAN test message" };
             LORA_DATA_SEND_STRUCT dss;
             dss.raw_data_ptr = test;
-            dss.data_length = sizeof(test)+1;
+            dss.data_length = sizeof(test) + 1;
             LORASendData(&dss);
             return HTTP_IO_DONE_NOREFRESH;
         }
         else if (!strcmp(tmp, (const char*) "2"))
         {
+            PPPModemGetRSSI();
             return HTTP_IO_DONE_NOREFRESH;
         }
         else if (!strcmp(tmp, (const char*) "3"))
@@ -495,7 +496,6 @@ static HTTP_IO_RESULT HTTPPostSystemSettings(httpd_req_t *req, char *PostData)
             return HTTP_IO_DONE_NOREFRESH;
         }
 
-
     }
 
     return HTTP_IO_DONE;