diff --git a/android/handsfree.c b/android/handsfree.c
index c1aa9f8..25bdd18 100644
--- a/android/handsfree.c
+++ b/android/handsfree.c
@@ -635,9 +635,29 @@ static void at_cmd_bcs(struct hfp_gw_result *result, enum hfp_gw_cmd_type type,
 static void at_cmd_ckpd(struct hfp_gw_result *result, enum hfp_gw_cmd_type type,
 							void *user_data)
 {
+	unsigned int val;
+
 	DBG("");
 
-	/* TODO */
+	switch (type) {
+	case HFP_GW_CMD_TYPE_SET:
+		if (!hfp_gw_result_get_number(result, &val) || val != 200)
+			break;
+
+		if (hfp_gw_result_has_next(result))
+			break;
+
+		ipc_send_notif(hal_ipc, HAL_SERVICE_ID_HANDSFREE,
+				HAL_EV_HANDSFREE_HSP_KEY_PRESS, 0, NULL);
+
+		hfp_gw_send_result(device.gw, HFP_RESULT_OK);
+
+		return;
+	case HFP_GW_CMD_TYPE_READ:
+	case HFP_GW_CMD_TYPE_TEST:
+	case HFP_GW_CMD_TYPE_COMMAND:
+		break;
+	}
 
 	hfp_gw_send_result(device.gw, HFP_RESULT_ERROR);
 }