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时间:2010-07-20 22:38来源:蓝天飞行翻译 作者:admin
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more messages, each of which shall conform with the
provisions of 4.4.3.1.2.3. During such conversion, the
4.4.4.1 The filing time shall comprise the 6-digit datetime
group indicating the date and time of filing the message
for transmission (see 3.4.2); in teletypewriter operation, the
filing time shall be followed by one LETTER SHIFT [J].
4.4.4.2 An originator indicator, which shall be
immediately preceded by a SPACE, shall comprise:
a) the four-letter location indicator of the place at which
the message is originated;
b) the three-letter designator identifying the organization1
function (aeronautical authority, service or aircraft
operating agency) which originated the message;
c) an additional letter which shall represent a department,
division or process within the organizationlfunction of
the originator. The letter X shall be used to complete the
address when explicit identification is not required.
4.4.4.2.1 Where a message is originated by an
organization that has not been allocated an ICAO three-letter
designator of the type prescribed in 4.4.4.2 b), the location
indicator of the place at which the message is originated shall
be followed immediately by the ICAO three-letter designator
YYY followed by the filler letter X (or the ICAO three-letter
designator YXY followed by the filler letter X in the case of
a military service or organization). The name of the
organization (or military service) shall then be included in the
first item in the text of the message.
4.4.4.2.2 Where a message originated by an aircraft in
flight requires handling on the AFTN for part of its routing
before delivery, the originator indicator shall comprise the
location indicator of the aeronautical station responsible for
Chapter I Annex 10 - Aeronautical Telecommunications
transferring the message to the AFTN, followed immediately
by the ICAO three-letter designator ZZZ followed by the filler
letter X. The identification of the aircraft shall then be
included in the first item in the text of the message.
4.4.4.2.3 Messages relayed over the AFTN that have been
originated in other networks shall use a valid AFTN originator
indicator that has been agreed for use by the relay or gateway
function linking the AFTN with the external network.
N o t e . The ,following illustrates the application of
4.4.4.2.2 procedure as it would appear with a rnessage,from
aircrqft KLM153 addvessed to the Area Control Centre at
CZEG, the message being handled via aeronautical station
CYCB. The heading and ending of the message are not shown
in this example of teletypewriter page-copy,form:
(Address) FF CZEGZR ZX
(Origin) 031 821 CYCBZZZX
(Text) KLMl53 [remainder of text as received
,from aircruftj
4.4.4.3 The priority alarm shall be used only for distress
messages. When used, it shall consist of the following, in the
order stated:
a) FIGURE SHIFT [TI;
b) FIVE transmissions of signal no. 10 (figure case);
C) LETTER SHIFT [J].
Note I . The ,figure case of signal no. 10 of the
International Telegraph Alphabet No. 2 generally corresponds
to the,figure case of J of teletypewriter equipment in use on
aeronautical ,fiwed service circuits.
Note 2 . Use of the priority alarm will actuate a hell
(attention) signal at the receiving teletypewriter station, other
than at those fully automatic stations which may provide a
similar alarm on receipt of priority indicator SS, thereby
alerting supervisory personnel at relay centres and operators
at trihutay stations, so that immediate attention may be given
to the message.
4.4.4.4 The inclusion of optional data in the origin line
shall be permitted provided a total of 69 characters is not
exceeded and subject to agreement between the authorities
concerned.
4.4.4.4.1 Recommendation.- The presence of the
optional data,field should be indicated by one occurrence of
the space character and terminated by the alignment,function.
4.4.4.4.2 Recommendation.- When additional
addressing information in a message needy to be exchanged
between source and destination addresses, it should be
conveyed in the optional dutu,field (ODF), using the,following
specific format:
a) characters one and ,full stop (I.) to indicate the
parameter code,for the additional address,function;
b) three modjfier characters,,followed by an equal sign [=]
and the assigned 8-character ICAO address; and
c) the character hyphen (-1 to terminate the additional
addvess parameter,field.
4.4.4.4.2.1 Recommendation.- When a separate
addms,for service messages or inquiries is diferent,from the
 
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