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to a level of probability consistent with thc required cations paths available in case one path is subject to denial of
application service availability as determined by local policies. service.
l/lU01
Nu. 76
Annex 10 - Aeronautical Telecommunications
TABLES FOR CHAPTER 3
Table 3-1. 'hansit delays for ATSC Classes
Note 2.- The 95% probabilipi is based on the availability of a route
Volume III
No. 76
Part I Annex 10 - Aeronautical Telecommunications
Table 3-2. Mapping of ATN communication priorities
No. 76
Message categories
Networkfsy stems management
Distress communications
Urgent communications
High-priority ilight safety messages
Normal-priority flight safety messages
Meteorological communications
Flight regularity cornrnunica~ions
Aeronautical information service messages
Network/systems administration
Aeronautical administrative messages
<unassigned>
Urgent-priority administrative and U.N. Charter
communications
High-priority administrative and State/Government
communications
Normal-priority administrative communications
Low-priorily administrative communications and
acronautical passenger communications
Note.- The network layer priorities shown in the
not lipply to subnetwork priority.
ATN upplicalion
SM
CPDLC, ADS
AIDC, ATIS
METAR
CM, ATSMHS
SM, DIR
table apply only to
Corresponding
Trnnsporr layer
priority
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
connectionless nenvork
protocol priority
Network layer
priority
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
priority and do
Annex 10 - Aeronnuticnl Telecommunicafions Volume 111
Table 3-3, Mapping of ATN network priority to mobile subnetwork priority
1111101.
No. 76
Message categories
Networkfsystems management
Distress communications
Urgent communications
High-priority flight safety messages
~ o r m a l - ~ r i o rfilitg~h t safety messages
Meteorological communications
Flight regularity communications
Aeronautical information service messages
Network/systems administration
Aeronautical administrative messages
<unassigned>
Urgent-priority administrative and U.N. Charter
communications
High-priority administrative and StatelGovernment
communications
Normal-priority administrative
communications
Low-priority administrative communications and
aeronautical passenger communications
Note 1.- VDL. Mode 2 has no .vpecipc subnehvork
Note 2.- The AMSS SARPs speuifr mapping of message caregories to subnetwork prior@ without explicitly referencing ATN network Layer
priorip.
Note 3.- The rerm "not allowed" means rhar only communicarions related to safe@ and regzrlarir~o' f,fligkt are authoriied to pass over
this subnetwork as defined in the subnern~ork SARPs.
Nore 4. - The term AMSS-1 refers ro rhe firsr gene?-ation aeronautical mobile satellite service.
Note 5. - Only those mobile subnent,orks are lisred for which snbnerwork SAlzPs exist and,for which explicit support is provided by the
ATN boundary inremediate sysrem (BIS) technical provisions.
Noie 6. - The rerm "resrricted" rneans .for this message category the use uf this subne~orkm ay not be allorved in certain Stares and/or
regiona based on ITU radio pequency spectrum allocation.
ATN network
layer prior;@
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
priority mechanisms.
Corresponding
AMSS-1
(see Note 4)
14
14
14
11
11
8
7
6
5
5
not assigned
3
2
I
0
mobile
VDL
Mode 2
see Note 1
see Note 1
see Note 1
see Note 1
see Note 1
see Note 1
see Note 1
see Note 1
see Note 1
restricted
sec Note 1
not assigned
see Note 1
restricted
see Note 1
restricted
see Note 1
restricted
see Note I
restricted
see Note 1
subnerwork priority
SSlz
Mode S
, high
high
high
high
high
low
low
low
low
not allowed
not allowed
not allowed
not allowed
.
not allowed
not allowed
(see Note 5)
HFDL
14
14
14
　
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