diff --git a/Kconfig b/Kconfig
index a8b1b06..c20e180 100644
--- a/Kconfig
+++ b/Kconfig
@@ -501,6 +501,13 @@ menu "WebGUIApp"
 	                Pin to unlock the SIM
 	    
 	        menu "UART Configuration"
+	            config MODEM_UART_PORT_NUM
+	            	int "Modem UART port number"
+	            	default 1
+	            	range 0 2
+	            	help
+	            		UART port number dedicated to modem
+	            
 	            config MODEM_UART_TX_PIN
 	                int "TXD Pin Number"
 	                default 17
diff --git a/include/NetTransport.h b/include/NetTransport.h
index 528af3b..3062f36 100644
--- a/include/NetTransport.h
+++ b/include/NetTransport.h
@@ -93,9 +93,6 @@ void NextDefaultNetIF(void);
 void PrintDefaultNetIF(void);
 void GetDefaultNetIFName(char *name);
 
-void InitRS485(void);
-void RS485Task(void *pvParameter);
-
 void PrintNetifs(void);
 void GotEthIF(void);
 
diff --git a/src/GSMTransport.c b/src/GSMTransport.c
index aeea2a0..ac9002b 100644
--- a/src/GSMTransport.c
+++ b/src/GSMTransport.c
@@ -176,6 +176,7 @@ static void GSMInitTask(void *pvParameter)
     /* Configure the DTE */
     esp_modem_dte_config_t dte_config = ESP_MODEM_DTE_DEFAULT_CONFIG();
     /* setup UART specific configuration based on kconfig options */
+    //dte_config.uart_config.port_num = CONFIG_MODEM_UART_PORT_NUM;
     dte_config.uart_config.tx_io_num = CONFIG_MODEM_UART_TX_PIN;
     dte_config.uart_config.rx_io_num = CONFIG_MODEM_UART_RX_PIN;
     dte_config.uart_config.rts_io_num = CONFIG_MODEM_UART_RTS_PIN;