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4.10.4. b) from circuit-mode services;
1) voice channel characteristics;
4.10.3 GES management interfaces 2) request for frequency (Q number, application
reference number);
4.10.3.1 The GES management shall interface with the
subnetwork layer, circuit-mode services, link layer and 3) request for channel unit (Q number, application
physical layer in order to exchange control information reference number).
required for GES table management, log status management
and channel management.
4.10.3.4 LINK LAYER
4.10.3.2 SUBNETWORLKAY ER 4.10.3.4.1 The control information exchanged between
the GES management and the link layer in the GES shall be
The following control information shall be exchanged between as in Table 4-45.
the GES management and the subnetwork layer in the GES:
4.10.3.4.2 The information shall be exchanged in the
a) to subnetwork layer: form of link interface data units (LIDUs). The LDU shall
contain link interface control information (LICI) only.
1) log status information:
i) logged-onllogged-off;
ii) AES ID;
iii) GES ID;
2) minimum channel rate of T channel;
3) channel rate of P, and R, channels.
Note.- Each UDU received from the GES management
is mapped into a corresponding SU set in the link layer
according to 4.5.3.2.3.
4.10.3.5 PHYSICAL LAYER
The following control information shall be exchanged between
the GES management and the physical layer in the GES:
a) to physical layer (for each channel):
4.10.3.3 CIRCUIT-MODSEER VICES
1 ) frequency;
The following control information shall be exchanged between
the GES management and the circuit-mode services in the GES: 2) channel rate setting (if selectable);
Part I Annex 10 - Aeronautical Telecommunications
3) power setting;
4) mode (T, or R, or C, if selectable);
5) channel unit number;
b) from physical layer (for each channel):
1) estimated C channel bit error rate;
2) channel unit number;
3) mode.
4.10.4 GES management functions
4.10.4.1 The GES management shall carry out the
following functions:
a) GES table management;
b) GES log status management;
c) GES channel management;
d) GES system broadcast.
4.10.4.2 GES TABLE MANAGEMENT
4.10.4.2.1 The GES management shall maintain the
following tables:
a) AES system table;
b) AES log-on status table.
4.10.4.2.2 AES SYSTEM TABLE
4.10.4.2.2.1 The AES system table for a satellite service
area shall include initial search data (search frequencies for
satellite and beam identification) and regional data (information
about each GES in the satellite service area).
4.10.4.2.2.2 Each GES in a satellite service area shall
maintain both the initial search data and regional data content
of the AES system table for that satellite service area in addition
to maintaining the initial search data for all the other
satellite service areas.
4.10.4.2.2.3 The initial search data for a satellite service
area shall include the following satelliteheam identifying
information for each beam that supports a satellitelbeamidentifying
P,,, channel in the satellite service area:
a) primary satelliteheam-identifying P,,, channel
frequency at 600 bitds;
b) secondary satellitelbeam-identifying P,,, channel
frequency at 600 bitds;
c) satellite ID;
d) satellite location, orbit inclination and right ascension
epoch;
e) beam ID (for spot-beam-only satellites).
4.10.4.2.2.4 The regional data for a satellite service area
shall include the following information:
a) system table revision number;
b) satellite ID;
C) for a satellite with a global beam, for each GES
supporting the global beam:
1) GES ID;
2) P,,, channel and %,, channel frequencies; and
3) P,,, channel and &,, channel rates;
d) for a satellite with spot beams only:
1) beam ID (same as in e) of initial search);
2) GES spot beam support table indicating in which
spot beam the GES radiates; and
3) for each GES supporting a spot beam:
i) GES ID;
ii) P,,, channel and $, channel frequencies;
and
iii) P,,, channel and %,, channel rates.
4.10.4.2.3 AES LOG-ON STATUS TABLE
4.10.4.2.3.1 Each GES shall maintain an AES log-on
status table, which shall include the information specified in
4.10.4.2.3.2 and 4.10.4.2.3.3.
4.10.4.2.3.2 The GES shall include in its AES log-on
status table, for every AES logged-on to it or to any other
GES in the same satellite service area, the following
information:
Annex 10 - Aeronautical Telecommunications Volume 111
a) AES ID;
b) satellite ID;
c) beam ID;
　
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