Note.— Free text message elements have no associated message intent. The capability to send a free text message with any of the attribute combinations already used in the message set has been provided for in the technical requirements of the ATN (Annex 10, Volume III, Part I, Chapter 3).
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Table A5-24. Negotiation responses (downlink)
Message intent/use Message element URG ALRT RESP
81 We can accept the specified level at the specified time. WE CAN ACCEPT (level) AT (time) L L N
82 We cannot accept the specified level. WE CANNOT ACCEPT (level) L L N
83 We can accept the specified speed at the specified time. WE CAN ACCEPT (speed) AT (time) L L N
84 We cannot accept the specified speed. WE CANNOT ACCEPT (speed) L L N
85 We can accept a parallel track offset the specified distance in the specified direction at the specified time. WE CAN ACCEPT (specified distance) (direction) AT (time) L L N
86 We cannot accept a parallel track offset the specified distance in the specified direction. WE CANNOT ACCEPT (specified distance) (direction) L L N
Note.— Wherever the variable “level” is specified, the message can specify either a single level or a vertical range, i.e. block level.
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