afAddrType_t *dstAddr;
    endPointDesc_t *srcEP;
    uint8 *buf;
    uint8 *transID;
    dstAddr.addr.shortAddr = 0;
    dstAddr->addrMode=afAddr16Bit;
    srcEP.endPoint=SAMPLEDOORLOCK_ENDPOINT;
    buf[0]=0x08;//Frame control:command acts across entire profile,not manufacturer 		                //specific,command sent from client to server.
    buf[1]=0x01;//transaction seq no
    buf[2]=0x01;//command identifier:Unlock door
    transID[0]=0x01;
    AF_DataRequest( dstAddr, srcEP,
                           ZCL_CLUSTER_ID_CLOSURES_DOOR_LOCK, 3, buf, transID,
                           AF_DEFAULT_RADIUS,0 );