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normalized to the channel rate divided by 2, and thc amplitude is normalized to 0 dB ar a
frequency of 0. This mask is illustrared in the guidance material.
ANNEX 10 - VOLUME Ill
Annex 10 - Aeronautical Telecommunica#ons
Table A1-3. Required filter amplitude versus frequency
response limits for A-QPSK
I Normalized Amplitude Normalized Amplitude
frcqucncy response (dB) frequency response (dB)
Upper bound
Volume III
Lower bound
The mask shall be defined by drawing straight lines through the above points where frequencies are
normalized to the channel rate divided by 4. and the amplitude is normalized to 0 dB at a frequency of 0.
This mask is illusuared in the guidance material.
Appendix 2 to Chapter 4
SIGNAL UNIT FORMATS
Note.- Field mapping of CCl77 CRC field is
different from the other fields.
CONTROL INFORMATION1
USER DATA
Figure A2-1. Signal unit field mapping and bit transmission order
ANNEX 10 - VOLUME 111
MSB ------ LSB
FIELD
MAPPING
CONVENTION
I
BIT NO.
MSB LSB - First transmitted bit
8 7 6 5 4 3 2 1
1 - First transmitted octet
2
3
4 0
C
5 T
E
6 T
7 N
U
8 M
B
9 E
R
10
I I I I I I I r -
-
L -
CONTROL INFORMATION1
USER DATA
-
-
-
- -
- -
- -
LSB
Annex 10 - Aeronautical Telecommunications Volume ZZZ
BIT NO.
8 7 6 . 5 4 3 2 1
I I I I I I I
1
2
3
4
5
6
7
8 0
C
9 T
E
10 T
I 1 ;
12 ;
13
14
15
16
17
18
19
* DLSIRLS always set to 0
** Class of AES
Figure A2-2. Log-on request - R channel
Part I Annex 10 - Aeronautical Tdecommunications
--
BIT NO.
8 7 6 5 4 3 2 1
I REFERENCE NO. / lo
+ Reserved
1
2
3
4 0
C
5 T
E
6 T
7 N
U
8 M
B
9 E
R
MESSAGE TYPE
- -
AES ID
- -
GES ID
Figure A2-3. Log-on ~ o ~-r Pm ch annel
BIT NO.
Q NO. TDMA REF
SATELLITE ID (previous)
I I I I I I I
CClTT CRC
BEAMID
MESSAGE MPE
Figure A2-5. Log control - P channel
Log-on reject
P/R
1
2
3
4 0
C
5 1
E
6 T
7 N
U ;
ri
10
- -
- AES ID -
GES ID
RES"
BEAM ID (Isb)
Q NO.
REASON
BIT NO.
8 7 6 5 4 3 2 1
I I I I I I I
INfT. ElRP (Rfr CH)
REFERENCE NO.
-
CClTT CRC
MESSAGE TYPE
2
AES ID 3
4 0
C
5 T
E
Q NO. REFERENCENO. 6 T
-
- SPARE 2
Figure A2-4. Log control - P channel
Log-on interrogationflog-on prompt1
log-off acknowledgement/data channel reassignment
1
- -
- SPARE -
- -
CLASS OF
AES
BIT NO.
7 N
U
8 M
B
9 E
R
10
VOICE CH. CHARACTERISTICS
AES ID
I I I I I I I
GES ID
MESSAGE TYPE
CClTT CRC
1
Figure A2-6. Log control - P channel
Log-off request
Annex 110 - Aeronautical Telecommunications Volume Ill
Fignre A2-7. Access requtsf data - T channel
Request for reservation (REQ)
BIT NO.
8 7 6 5 4 3 2 1
BIT NO.
1
2
3
4 0
C
5 T
E
6 T
7 N
U
M
8
E
9 R
10
11
12
I I I I I I I
MESSAGE TYPE
- -
- AES ID -
GES ID
I I I I I I I
CCItT CRC
RESERVED
SERVICE ID
REF. NO. (of message)
Q NO.
MESSAGE TYPE
Figure A2-9. Call information telephone -
from-aircraft sub-bmd C channel
Senlice address (ISU)
SOURCE
1
2
3
4 0
C
5 T
E
6 T
7 N
U
8 M
B
E
9 R
10
- -
AES ID
- -
GES ID
BIT NO.
SERVICE
DIRECTION
SPARE
Q NO.
RESERVED
CALLING TERMINAL ID
(units digit)
DIGIT 3
DIGIT 5
MESSAGE TYPE
- -
- AES ID -
GES ID
Q NO. APPLICATION REF. NO.
SOURCE SERVICE SERVICE ID
DIRECTION
CIRCUIT DATA RATE RESERVED
SPARE VOICE CH. CHARACTERISTICS
CALLE D TERMINAL ID CALLED TERMINAL ID
(units digit) (tens digit)
- CClTT CRC -
Q NO. (of message)
MESSAGE LENGTH
APPLICATION REF. NO.
SEQUENCENO.
　
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