
 
 
 
5.4 TO SEND AN OUTBOUND MESSAGE 
This is s nding a m ssag  to th  Onlin AVL application that is not associat d with r c iving an 
inbound m ssag  on th  MDT-850 t rminal. 
 
1. From th  m ssag  pag , pr ss ‘ENTER’ onc  without s l cting any r c iv d m ssag  
2. Pr ss th  ‘Pag  Up’ and ‘Pag  Down’ k ys to display th  r ply options 
3. Pr ss th  ‘S l ction’ k y that match s th  m ssag  you want 
4. You will h ar a 2-ton  al rt wh n th  m ssag  is r c iv d by th  Onlin AVL application 
5. Th  m nu will th n r turn to th  m ssag  pag  with your abbr viat d r ply m ssag  in th  
top right corn r 
 
5.5 TO EDIT A MESSAGE 
This is only for pr s t r ply m ssag s with numb r d ar as. 
 
1. S l ct th  m ssag  you want from th  m ssag  list 
2. Us  th  ‘Right’ and ‘L ft Function k ys to s l ct th  digits that n d  diting 
3. Us  th  ‘Up’ and ‘Down’ Function k ys to  dit th  valu  
4. Pr ss th  ‘S l ction’ k y matching th   dit d m ssag  to s nd it 
5. You will h ar a 2-ton  al rt wh n th  m ssag  is r c iv d by th  Onlin AVL application 
6. Th  m nu will th n r turn to th  m ssag  pag   
 
Not : to chang  a blank spac  to a numb r, us  th  ‘Up’ k y.  To chang  a numb r to a blank 
spac , us  th  ‘Down’ k y aft r 0. 
 
 
6.0 D IVE  ID  
 
If th  Driv r ID (Driv r Id ntification) functionality has b n  nabl d for you MDT by an Onlin AVL 
us r, th n a driv r is r quir d to  nt r a Driv r PIN to confirm th ir Driv r ID (d t rmin d by an 
Onlin AVL us r). 
 
Th  Driv r PIN (P rsonal Id ntification Numb r) must b   nt r d within a c rtain tim  fram  
(d t rmin d by an Onlin AVL us r,  g 40 s conds) aft r which th  MDT will b p until a corr ct 
Driv r PIN has b n  nt r d. 
 
6.1 HOW TO LOGON 
1. Th  Driv r ID Logon scr n will app ar on th  MDT 10-12 s conds aft r th  ignition is 
turn d on  
 
 
 
 
 
2. Th  numb r ‘0’ will app ar in th  spac  of th  first digit.  Us  th  ‘Up’ and ‘Down’ Function 
k y to chang  this digit to th  first digit of your Driv r PIN