+//#ifdef DIRECT_PAIRING
+/**
+ * The function is responsible for discovery of direct-pairing device is current subnet. It will list
+ * all the device in subnet which support direct-pairing.
+ * Caller must NOT free returned constant pointer
+ *
+ * @param[in] timeout Timeout in seconds, value till which function will listen to responses from
+ * client before returning the list of devices.
+ * @return OCDirectPairingDev_t pointer in case of success and NULL otherwise.
+ */
+const OCDPDev_t* OCDiscoverDirectPairingDevices(unsigned short waittime);
+
+/**
+ * The function is responsible for return of paired device list via direct-pairing. It will list
+ * all the device which is previousely paired with client.
+ * Caller must NOT free returned constant pointer
+ *
+ * @return OCDirectPairingDev_t pointer in case of success and NULL otherwise.
+ */
+const OCDPDev_t* OCGetDirectPairedDevices();
+
+/**
+ * The function is responsible for establishment of direct-pairing. It will proceed mode negotiation
+ * and connect PIN based dtls session.
+ *
+ * @param[in] peer Target device to establish direct-pairing.
+ * @param[in] pmSel Selected mode of pairing.
+ * @param[in] pinNumber PIN number for authentication, pin lenght is defined DP_PIN_LENGTH(8).
+ * @param[in] resultCallback Callback fucntion to event status of process.
+ * @return OTM_SUCCESS in case of success and other value otherwise.
+ */
+OCStackResult OCDoDirectPairing(OCDPDev_t* peer, OCPrm_t pmSel, char *pinNumber,
+ OCDirectPairingCB resultCallback);
+//#endif // DIRECT_PAIRING
+