PPTP_CALL_STATE_ESTABLISHED
_this->state = PPTP_CALL_STATE_ESTABLISHED;
if (_this->state == PPTP_CALL_STATE_ESTABLISHED) {
if (_this->state != PPTP_CALL_STATE_ESTABLISHED) {
PPTP_CALL_ASSERT(_this->state == PPTP_CALL_STATE_ESTABLISHED);
case PPTP_CALL_STATE_ESTABLISHED: