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naming are defined in Doc 9705 - Manual of Technical Provisions
for the Aeronautical Telecommunication Network
(Am), Sub-volume N Chapter 3.3 and the provisions for
network and transport addressing are defied in Sub-volume
Chapter 5.4 of the same document.
3.8 ATN SYSTEMS MANAGEMENT
REQUIREMENTS
(to be developed)
Note- While systems management requirements are being
developed, the inzplementatio~ot f systems management protocols,
fultctions and information is considered a regional or
local matter:
3.9 ATN SECURITY REQUIREMENTS
(to be developed)
Note.- While securiiy requirements are being developed,
physical and/or procedural security nieasures can be used for
ATN components in accordance with existing practices.
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Annex 10 - Aeronautical Telecommunications
TABLES FOR CHAPTER 3
Table 3-1. Transit delays for ATSC Classes
between the ultimate users of the system.
Note 2.- The 95% probubiliry is based on the availability of a route
Volume IZZ
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Part I Annex 10 - Aeronautical Telecommunications
Table 3-2. Mapping of ATN communication priorities
511 1/98
No. 73
Message categories
NetworWsystems management
Distress communications
Urgent communications
Hlgh-priority flight safety messages
Normal-priority flight safety messages
Meteorological cornmunicatio~s
Flight regularity communications
Aeronautical information servrce messages
NetworWsystems administration
Aeronautical administrative messages
<unassigned>
Urgent-priority administrative and U.N. Charter
communications
High-priority administrative and Srare/Government
communications
Normal-priority administrative
Low-priority administrative
Note 1.- Priorities above the bold line are for communications related to safety and regularity of
jight.
Note 2.- The network layer priorities shown in the table apply only to connectionless network
priority and do not apply to subnetwork prioriry.
ATN application
CPDLC, ADS
AIDC
CM, ATSMHS
ATIS
5
Corresponding
Transport layer
prioriw
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
protocol priorify
Network layer
prioriiy
14
13
12
I1
10
9
8
7
6
5
4
3
2
1
0
Annex 10 - Aeronautical Telecommunications
Table 3-3. Mapping of ATN network priority to mobile subnetwork priority
Volume 111
5/11/98
No. 73
Message categories
NetworWsystems ~nanagement
Distress communications
Urgcnt commnunications
High-priority flight safety messagcs
Normal-priority flight safety messagcs
Meteorological communications
Right regularity communications
Aeronautical information service messages
Network/systems administration
Aeronautical administrative messages
<unassigned> . -. .
Urgcnt-priority administrative and U.N. Charter
cominunications
High-priority administrative and State/Govcrnment
communications
Normal-priority administrative
Low-priority administrative
Note 1.- Priorities above the bold line are for communications related to safely and reguluriry ofjight.
Note 2.- VDL Mode I and Mode 2 h v c no speczjic subnetwork priority mechanisms.
Note 3.- The AMSS SARPs specqy mapping of message categories to ~Llbnelwork priority without explicitly
referencing ATN network layer priority.
Note 4.- The term "not allowed" means that only comrn~nications related to safety and regzrlarity offlight are
authorized to pass over this subnetwork as defined in the subnetwork SAWS.
ATN network
layer priority
14
13
12
I I
10
9
8
7
6
5
4
3
2
I
0
Corresponding
A MSS
14
14
14
1 I
11
8
7
6
5
5
not applicable
3
2
1
0
mobile subnetwork
VDL (Mode I
and Mode 2)
see Note 2
see Note 2
see Note 2
see Note 2
see Note 2
sce Note 2
see Note 2
see Note 2
see Note 2
see Note 2
see Note 2
see Note 2
see Note 2
see Note 2
see Note 2
prioriry
SSR Mode S
high
high
high
high
high
low
low
low
low
not allowed
not allowed
not allowed
not allowed
not allowed
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