diff --git a/Tools/AP_Periph/AP_Periph.cpp b/Tools/AP_Periph/AP_Periph.cpp
index 78cc920c1d..41bf37b92c 100644
--- a/Tools/AP_Periph/AP_Periph.cpp
+++ b/Tools/AP_Periph/AP_Periph.cpp
@@ -100,16 +100,16 @@ void AP_Periph_FW::init()
 
     can_start();
 
-#ifdef HAL_PERIPH_ENABLE_NETWORKING
-    networking_periph.init();
-#endif
-
 #if HAL_GCS_ENABLED
     stm32_watchdog_pat();
     gcs().init();
 #endif
     serial_manager.init();
 
+#ifdef HAL_PERIPH_ENABLE_NETWORKING
+    networking_periph.init();
+#endif
+
 #if HAL_GCS_ENABLED
     gcs().setup_console();
     gcs().setup_uarts();
diff --git a/Tools/AP_Periph/networking.cpp b/Tools/AP_Periph/networking.cpp
index 8ac256850c..41fb6ee042 100644
--- a/Tools/AP_Periph/networking.cpp
+++ b/Tools/AP_Periph/networking.cpp
@@ -137,12 +137,32 @@ const AP_Param::GroupInfo Networking_Periph::var_info[] {
     AP_SUBGROUPINFO(passthru[8], "PASS9_", 19, Networking_Periph, Passthru),
 #endif
 
+#if AP_NETWORKING_BACKEND_PPP
+    // @Param: PPP_PORT
+    // @DisplayName: PPP serial port
+    // @Description: PPP serial port
+    // @Range: -1 10
+    AP_GROUPINFO("PPP_PORT", 20, Networking_Periph, ppp_port, AP_PERIPH_NET_PPP_PORT_DEFAULT),
+
+    // @Param: PPP_BAUD
+    // @DisplayName: PPP serial baudrate
+    // @Description: PPP serial baudrate
+    // @CopyFieldsFrom: SERIAL1_BAUD
+    AP_GROUPINFO("PPP_BAUD", 21, Networking_Periph, ppp_baud, AP_PERIPH_NET_PPP_BAUD_DEFAULT),
+#endif
+
     AP_GROUPEND
 };
 
 
 void Networking_Periph::init(void)
 {
+#if AP_NETWORKING_BACKEND_PPP
+    if (ppp_port >= 0) {
+        AP::serialmanager().set_protocol_and_baud(ppp_port, AP_SerialManager::SerialProtocol_PPP, ppp_baud.get());
+    }
+#endif
+
     networking_lib.init();
 
 #if HAL_PERIPH_NETWORK_NUM_PASSTHRU > 0
diff --git a/Tools/AP_Periph/networking.h b/Tools/AP_Periph/networking.h
index 6b7f857fdc..71cdc1754e 100644
--- a/Tools/AP_Periph/networking.h
+++ b/Tools/AP_Periph/networking.h
@@ -10,6 +10,14 @@
 #define HAL_PERIPH_NETWORK_NUM_PASSTHRU 2
 #endif
 
+#ifndef AP_PERIPH_NET_PPP_PORT_DEFAULT
+#define AP_PERIPH_NET_PPP_PORT_DEFAULT -1
+#endif
+
+#ifndef AP_PERIPH_NET_PPP_BAUD_DEFAULT
+#define AP_PERIPH_NET_PPP_BAUD_DEFAULT 12500000
+#endif
+
 class Networking_Periph {
 public:
     Networking_Periph() {
@@ -54,7 +62,11 @@ private:
 #endif // HAL_PERIPH_NETWORK_NUM_PASSTHRU
 
     AP_Networking networking_lib;
+
+#if AP_NETWORKING_BACKEND_PPP
+    AP_Int8 ppp_port;
+    AP_Int32 ppp_baud;
+#endif
 };
 
-#endif // HAL_PERIPH_ENABLE_BATTERY_BALANCE
-
+#endif // HAL_PERIPH_ENABLE_NETWORKING