SIMPLE PROGRAMMABLE DTMF CONTROL

1. DTMF CONTROL GENERAL INFORMATION
   
   1. The DTMF codes can be from 1 to 5 digits to access a function
   2. There can be up to 25 DTMF codes programmed in the Linker controller
   3. There are 3 tones used to communicate the status of the function and the received DTMF data
   1. If additional information is needed an “M” will be sent in CW to indicate the need for MORE information
   2. If the command was OK with no further need for information a “K” will be sent.
   3. If the command was not accepted or bad a “B” will be sent and the command will terminate
   
   
2. USER CONTROL LEVEL
   
   1. The User level is the default
      
   2. In the User level only DTMF codes programmed to work which you set at this level will be recognized .
      
   3. The User level DTMF codes may be from 1 to 5 digits.
      
   4. May be used for such things as using the phone patch or the touch tone pad test but can any command can be setup here
      
   
   
3. CONTROL OPERATOR LEVEL
   
   1. All DTMF codes setup on the User level can also be accessed on this level
      
   2. The Control operator level can be accessed using a DTMF code from the user level which you set
      
   3. The Control operator level is exited using a DTMF code which you set
      
   4. Selected functions are accessible using a 1 to 5 digit DTMF code which you set
      
   
   
4. SETUP
   
   1. ALL functions / commands are accessible from the Setup mode
      
   2. The Setup mode can be accessed by either
      
      1. A hardware jumper on control board
         
      2. DTMF code entry if enabled.
         
   3. The Setup mode can be exited by
      
      1. Removing the setup jumper
         
      2. DTMF command entry – “exit setup”  (even if hardware jumper is still installed).