uint8_t duSendEgtpSrvOpenReq();
uint8_t duHdlEgtpSrvOpenComplete(CmStatus cfm);
uint8_t duSendEgtpTnlMgmtReq(uint8_t action, uint32_t lclTeid, uint32_t remTeid);
uint8_t duSendEgtpSrvOpenReq();
uint8_t duHdlEgtpSrvOpenComplete(CmStatus cfm);
uint8_t duSendEgtpTnlMgmtReq(uint8_t action, uint32_t lclTeid, uint32_t remTeid);