diff --git a/libraries/AP_Frsky_Telem/AP_Frsky_SPort_Passthrough.cpp b/libraries/AP_Frsky_Telem/AP_Frsky_SPort_Passthrough.cpp
index a78bc87463e56a..23dffa7cef76bb 100644
--- a/libraries/AP_Frsky_Telem/AP_Frsky_SPort_Passthrough.cpp
+++ b/libraries/AP_Frsky_Telem/AP_Frsky_SPort_Passthrough.cpp
@@ -418,10 +418,19 @@ uint32_t AP_Frsky_SPort_Passthrough::calc_param(void)
         break;
     case BATT_CAPACITY_1:
         param_value = (uint32_t)roundf(AP::battery().pack_capacity_mah(0)); // battery pack capacity in mAh
-        _paramID = AP::battery().num_instances() > 1 ? BATT_CAPACITY_2 : FRAME_TYPE;
+        _paramID = AP::battery().num_instances() > 1 ? BATT_CAPACITY_2 : TELEMETRY_FEATURES;
         break;
     case BATT_CAPACITY_2:
         param_value = (uint32_t)roundf(AP::battery().pack_capacity_mah(1)); // battery pack capacity in mAh
+        _paramID = TELEMETRY_FEATURES;
+        break;
+    case TELEMETRY_FEATURES:
+#if HAL_WITH_FRSKY_TELEM_BIDIRECTIONAL
+        BIT_SET(param_value,PassthroughFeatures::BIDIR);
+#endif
+#ifdef ENABLE_SCRIPTING
+        BIT_SET(param_value,PassthroughFeatures::SCRIPTING);
+#endif
         _paramID = FRAME_TYPE;
         break;
     }
diff --git a/libraries/AP_Frsky_Telem/AP_Frsky_SPort_Passthrough.h b/libraries/AP_Frsky_Telem/AP_Frsky_SPort_Passthrough.h
index a1ce63c65bf3a5..2b7cd35c47863a 100644
--- a/libraries/AP_Frsky_Telem/AP_Frsky_SPort_Passthrough.h
+++ b/libraries/AP_Frsky_Telem/AP_Frsky_SPort_Passthrough.h
@@ -91,6 +91,12 @@ class AP_Frsky_SPort_Passthrough : public AP_Frsky_SPort, public AP_RCTelemetry
         BATT_FS_CAPACITY =    3,
         BATT_CAPACITY_1 =     4,
         BATT_CAPACITY_2 =     5,
+        TELEMETRY_FEATURES =  6
+    };
+
+    enum PassthroughFeatures : uint8_t {
+        BIDIR =                 0,
+        SCRIPTING =             1,
     };
 
     // methods to convert flight controller data to FrSky SPort Passthrough (OpenTX) format