diff --git a/include/types.h b/include/types.h
index d25f409c..536dac7b 100644
--- a/include/types.h
+++ b/include/types.h
@@ -115,6 +115,30 @@ struct ofono_uuid {
 	unsigned char uuid[OFONO_SHA1_UUID_LEN];
 };
 
+/* HFP AG supported features bitmap. Bluetooth HFP 1.5 spec page 77 */
+enum hfp_ag_feature {
+	HFP_AG_FEATURE_3WAY =			0x1,
+	HFP_AG_FEATURE_ECNR =			0x2,
+	HFP_AG_FEATURE_VOICE_RECOG =		0x4,
+	HFP_AG_FEATURE_IN_BAND_RING_TONE =	0x8,
+	HFP_AG_FEATURE_ATTACH_VOICE_TAG =	0x10,
+	HFP_AG_FEATURE_REJECT_CALL =		0x20,
+	HFP_AG_FEATURE_ENHANCED_CALL_STATUS =	0x40,
+	HFP_AG_FEATURE_ENHANCED_CALL_CONTROL =	0x80,
+	HFP_AG_FEATURE_EXTENDED_RES_CODE =	0x100
+};
+
+/* HFP HF supported features bitmap. Bluetooth HFP 1.5 spec page 77 */
+enum hfp_hf_feature {
+	HFP_HF_FEATURE_ECNR =			0x1,
+	HFP_HF_FEATURE_3WAY =			0x2,
+	HFP_HF_FEATURE_CLIP =			0x4,
+	HFP_HF_FEATURE_VOICE_RECOGNITION =	0x8,
+	HFP_HF_FEATURE_REMOTE_VOLUME_CONTROL =	0x10,
+	HFP_HF_FEATURE_ENHANCED_CALL_STATUS =	0x20,
+	HFP_HF_FEATURE_ENHANCED_CALL_CONTROL =	0x40
+};
+
 const char *ofono_uuid_to_str(const struct ofono_uuid *uuid);
 void ofono_call_init(struct ofono_call *call);