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dash7_mode_2:alp_null [2012/03/01 13:36] (current)
jpnorair created
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 +====== Null ALP ======
 +"Null ALP" is an [[dash7_mode_2:​applayer|Application Layer Protocol]] (ALP) built-in to [[dash7_mode_2:​main|DASH7 Mode 2]].  Thus it is called a "​M2ALP." ​ DASH7 can support non-built-in application protocols as well, and these have their own names.
 +
 +===== Usage =====
 +The Null ALP causes no action to be taken. It may be used for handshaking/​acknowledgement purposes during Datastream Dialogs or other means of ALP usage. ​ Therefore, it is incredibly simplistic.
 +
 +===== Data Format =====
 +Null ALP follows the standard form of the [[dash7_mode_2:​applayer|DASH7 Mode 2 Built-in Application Layer Protocols]]. ​ The record structure is defined as follows:
 +^  Record Flags      ^  Record Length ​ ^  ALP ID  ^  ALP Command ​ ^
 +|  1 Byte            |  1 Byte         ​| ​ 1 Byte  |  1 Byte       |
 +|  (per M2ALP spec)  |  (N: 0-255) ​    ​| ​ (0x00) ​ |  (ignored) ​   |
  
dash7_mode_2/alp_null.txt ยท Last modified: 2012/03/01 13:36 by jpnorair