曝光臺 注意防騙 網曝天貓店富美金盛家居專營店坑蒙拐騙欺詐消費者

4.8.6.1.2.2.6; or
c) if the C channel from-aircraft carrier terminates for more
than tG13 seconds, GES circuit-mode services shall
forward a "clear forward" event (FlTE 22) to the
interworking interface. GES circuit-mode services shall
then forward to the link layer six "call progress -
channel relcase" CM-LIDUs via the C channel sub-band
and then perform the GES incoming release guard
procedure defined in 4.8.6.1.2.2.6; or
d) if a "call progress - channel release" CM-LIDU is
received, GES circuit-mode services shall fonvard a
"clear forward" event (FITE 22) to the interworking
interface. (If additional "call progress - channel
release" CM-LDUs are received, GES circuit-mode
services shall ignore them.) If the from-aircraft carrier is
not present, terminate all activities for the call;
, otherwise, if the C channel from-aircraft canier does not
terminate within tG14 seconds after the receipt of the
"call progiess - channel release" CM-LIDU, GES
circuit-mode services shall terminate all activities for the
call. If the C channel from-aircraft carrier terminates
within the same tG14 second period, GES circuit-mode
services shall terminate all activities for the call at the
end of the period.
Note.- The status of an unterminated from-aircraft
carrier should be posted to a monitoring function.
4.8.6.1.2.2.6 GES incoming release guard. When
releasing a C channel which is in use for an air-origination,
GES circuit-mode services shall do the following when
required elsewhere in 4.8:
a) if the C channel from-aircraft carrier terminates within
tG12 seconds after the last of the six "call progress -
channel release" CM-LIDUs was forwarded, GES
circuit-mode services shall terminate all activities for the
call; or
b) if the C channel from-aircraft camer does not terminate
within tG12 seconds after the last of the six "call
progress - channel release" CM-LIDUs was
forwarded, GES circuit-mode services shall forward to
the link layer twelve "call progress - channel release"
CM-LIDUs via the C channel sub-band followed by one
"call progress - channel release" CM-LXDU via the P
channel. If the from-aircraft carrier is not present,
terminate all activities for the call. Otherwise, if the C
channel from-aircraft carrier terminates within tG14
seconds after the transmission of the "call progress -
channel release" CM-LDU sent via the P channel, GES
circuit-mode services shall terminate all activities for the
call. If the C channel from-aircraft carrier does not
telminate within the same tG14 second period, GES
circuit-mode services shall terminate all activities for the
call at the end of the period; or
Note.-- The stntus of an unterminated from-aircrafr
carrier should be posted to a monitoring function.
c) if a "call progress - channel release" CM-EIDU is
received, GES circuit-mode services shall await the
termination of the C channel from-aircraft carrier. If the
-2-/ 11/00
No. 75
Part I Annex I0 - A~eronautical Telecommunications
from-aircraft carrier is not present, terminate all
activities for the call; otherwise, if the C channel fromaircraft
carrier terminates within tG14 seconds after
receipt of the "call progress - channel release'' CMLIDU,
GES circuit-mode services shall terminate all
activities for the call. If the C channel from-aircraft
carrier does not terminate within the same tG14 second
period, GES circuit-mode services shall terminate all
activities for the call at the end of the period.
Note.- The status of an unterminated from-aircraft
carrier should be posted to a monitoring function.
4.8.7 ATS-specific terrestrial
network standards
Note.- Guidance material on aeronautical speech circuit
switching and signalling is contained in ICAO Circular 183 -
ATS Speech Circuits - Guidance Material -on Switched
Network Planning and in Attachment A to Part I.
4.8.7.1 Ciosed user group. The AMS(R)S voice service
inclusive of interconnecting aircraft and terrestrial networks
shall be considered a closed user group to the extent that it is
a non-public safety service to be accessible only by ATS and
AOC users and used strictly for the conveyance of safety
information.
Note.- The definition of a closed user group implies that a
private numbering plan is also in eflect. A telephony
numbering plan for the safety service need not conform to that
of the international public switched telephone network (PSTN)
as defined in CCITT Recommendation E.163.
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：附件10--航空電信an10_v3_1ed_amend_75(58)