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octets of the burst identifier SU (Appendix 2 to Chapter 4,
Figure A2-47), using the following generator polynomial:
19. Delay to RES (6 bits)
This field shall indicatc the delay before the reservation will be
sent to the AES by the GES. The dclay shall be given as a
direct binary number of superframes.
(see CCITI Red Book, Recommendation X.25, Section 2.2.7)
19a. DETCIDETP (I bit)
At the receiving end, the check bits for each received signal
unit shall be calculated and if there is a mismatch with the
received check bits, the signal unit shall be discarded.
18. Data bit rate capability
(1 octet)
Each bit in this field shall indicate the availability ("1") or
unavailability ("0") of the corresponding channeVbit rate
combination at the AES as follows:
Bit Combination
P-Ch 1 200 bitsls
P-Ch 2 400 bitsts
P-Ch 4 800 bitsts
P-Ch 10 500 bitsts
R-/T-Ch 2 400 bitsls
R-/T-C h 10 500 bits/$
R-/T-Ch 4 800 bitsls
Unassigned
This field shall indicate whether the complete (DETC) or
partial (DETP) data E Wta bles are transmitted.
Code Function
0 The data EIRP table is not transmitted
1 The data EIRP table is transmitted
20. Digit
This field shall be a binary coded decimal digit. The end-ofdigits
code shall be combination F (HEX).
21. DLS/RLS (1 bit)
Code Function
0 Direct link service (DLS)
1 Reliable link service (RLS)
Note.- 0.6 and 1.2 kbit's Pj R and T channels are mandatory
for all AESs.
22. EIRP adjustment (4 bits)
lga. Data EIRP (global or spot) (8 bits)
Data EIRP level for global beam or spot beam operation
expressed as a binary number N, where:
Data ElRP = N*0.1 dBW
The EIRP range shall be from 0.1 to 25.5 dB. The EIRP
values are valid for all types of antenna. The all zeros code
shall be usad to denote a KULL value.
This field shall be used to indicate the EIRP adjustment value
relative to the current transmit level as follows:
Code Function
No adjustment
+1 dB
+2 dB
+3 dl3
Unassigned
-3 dB
-2 dB
-1 dB
18b. Data ElRP table sequence number (6 bits)
Sequence number of Data EIRP table SUs. The field shall be
set in the ISU to equal the total number of SSUs in the 23. Existence (1 bit)
sequence corresponding to that ISU (i.e. in the complete
sequence if the ISU is for the complete sequence, in the partial Code Function
sequence otherwise). The value shall be decremented by one in
each following SSU, until the last SSU of the sequence has a 0 This series of broadcasts is not being transmitted
value of zero. 1 This series of broadcasts is being transmitted
Annex 110 - Aeronautical Telecommunications
24. GES ID (1 octet)
This field shall be the 8-bit identifier given to the GES.
Volume III
28. IIR (initial/renewal) (1 bit)
This field shall indicate whether the log-on request is initial or
for log-on renewal.
25. GES beam support table Code Function
This field shall start from octet 5, bit 1 and shall end at octet 7, 0 Initial log-on
bit 8 of the AES System Table Broadcast P-channel, spot beam 1 Log-on renewal
series GES beam support advice signal unit (Figure A2-60).
Each bit shall correspond to a satellite beam, starting from
global beam in the first bit then spot beam 1, 2, 3, ttc. up to
spot beam 23, respectively.
29. Length (8 bits)
This field shall start from octet 5, bit 1 and shall end at
octet 10, bit 7 of the AES System Table Broadcast P-channel, This field shall be the direct binary representation of the
spot beam series GES beam support advice signal unit number of octets to follow.
(Figure A2-61). Each bit shall correspond to a satellite beam,
starting from global beam in the first bit then spot beam 24,
25, 26, etc. up to spot beam 63, respectively.
Each bit shall be encoded as:
Code Function
0 The GES does not support the beam
1 The GES does support that beam
26. Idle pattern
All zeros.
27. Initial EXRP (4 bits)
The EIRP value shall be equal to:
29a. Global beam series (GBS)
(1 bit)
This field shall indicate, in the spot beam series broadcast
index SU, whether or not a global beam series is present. This
field shall be set to one if the global beam series is present;
otherwise, the field shall be set to zero.
30. Location (of cause) (4 bits)
This information element shall indicate the location relevant to
the cause value and cause class information elements. Its
interpretation shall be dictated by the value assigned to the S
(coding standard) information element, which specifies
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