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DN(IV)                       3/20/74                       DN(IV)







NAME

     dn - DN-11 ACU interface



DESCRIPTION

     The dn?  files are write-only.  The permissible codes are:



         0-9  dial 0-9

         :    dial *

         ;    dial #

         -    4 second delay for second dial tone

         =    end-of-number



     The entire telephone number must be presented  in  a  single

     write system call.



     It is recommended that an end-of-number code be  given  even

     though not all ACU's actually require it.



FILES

     /dev/dn0        connected to 801 with dp0

     /dev/dn1        not currently connected

     /dev/dn2        not currently connected



SEE ALSO

     dp (IV)



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