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Part I Attnew 10 - .4 ernnautical T~lecn~nmu~~ications
Table 3-2. Mapping of ATN cnn~rnunication priorities
111 1/01
So. 76
Message catgories
NctworWsyslems management
Distress communications
Urgent colnmunications
High-priorily flight safety messages
Normal-priority flight safety messages
Meteorological communications
Flight rcgularity communications
Aeronautical information servicc messages
Networklsysrems administration
Aeronautical administrative mcssages
<unassigned>
Urgenl-priority administrative and U.N. Charter
communications
High-priority adlninistralive and Statc/Government
communications
Normal-priority administrative com~nunications
Low-priority administrative communications and
aeronautical passenger communications
Note.- The network layer priorities shown in the table apply niily ro connectionless network prioriry and do
nor apply to srrbnel\oorL pnorih
ATN applicuiion
Correspunrling
Trmsport layer
priority
protocol priuriiy
Nenvork layer
priorin'
14
13
12
I I
10
9
8
7
6
5
4
3
2
1
0
Sh.1 0
CPDLC. ADS
AIDC, ATIS
METAR
I
2
3
4
5
CM, ATSMMS 6
SM, DIR
7
8
9
10
11
12
13
14
Annex 10 - Aeronautical Telecommunications Volume ZZI
Table 3-3. Mapping of ATN network priority to mobile subnetwork priority
2711 1/03
No. 7 8
Message categories
Network/systcms
management
Distress communications
Urgent communications
High-priority flight safety
messages
Normal-priority flight safety
messages
Meteorological
communications
Flight regularity
communications
Aeronautical informalion
service mcssagcs
NctworWsystems
administration
Aeronautical administrative
messages
<unassigned>
Urged-priority
administrative and U.N.
Charler communications
High-priority administrative
ATN network
layer priority
14
13
12
11
I0
9
8
7
6
5
4
3
and StateiGovernment
communications
Nore 2.- The AMSS .SARPs specxy mapping o f ~nessugec utgorier to suhnerw~orkp rioriy lvithoirt explicit!y referencing ATh' nelwork /flyer
prinriq.
Nore 3.-The ler117 "nota llowed" n~wiisth ar only co~n?ntmicatinnrse laled ro safe0 and regtrlorip oofJlighi urc rzrzihurizcd to puss over this
strbnework ns rlr~inerl in the srrbtzehvork SARPs.
Notz 4:- Only those nzobilr siibi7ehvol.k~ ore listed for nlhich slrbnenuo1.k SARPs u,xisl and fo? \vlrich e,xplicit support i r pmvided by rlie
ATN bound0I-J inremediuts sysrenz (BIS) ~rrhr~ictpzrl ovisiulzs.
Note 5.- The VDL Mode 4 subne~workp rovicles supportfor' sun~eilluizccu pplications (6.g. ADS).
AMSS
14
14
14
11
11
8
7
6
5
5
unassigned
3
not allowcd
nor allowed
Normal-priority
administrative
communications
Low-priority administralive
com~nunications and
aeronautical passenger
communications
Corresponding
VDL
Mode 2
see Note 1
~~~~~~~
see Note 1
sec Note 1
see Note 1
see Note 1
see Note 1
see Note 1
see Note 1
see Note 1
not allowed
unassigned
not allowed
not allowed
not allowed
mobile
VDL
Mode 3
3
2
2
2
2
1
1
0
0
not allowed
unassigned
not allowcd
Note I.- VDL Adodc 2 has rro specific subrrenvork priority mechanisms.
I
0
subnetwork priority
VDL
Mode 4
(see Note 5)
high
high
high
high
high
medium
medium
medium
medium
not allowed
unassigned
not allowed
not allowcd
(see Note 4)
SSR
Mode S
high
high
high
high
high
low
low
low
low
not allowed
unassigned
not allowed
---
not allowed
EIFDL
14
-
14
14
11
11
8
7
6
5
no1 allowed
unassigned
not allowcd
no1 allowed
I
0
not allowed
nor allowed
not allowed
not allowed
not allowed
not allowed
Annex 10 - Aeronautical Telecommunications
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