Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4033

d) to cancel a diversion: SVC→QSP→CNL→C→K→BG→BI↓<≡ 4.4.1.6 Long-term retention of 4.4.1.6 AFTN traffic records 4.4.1.6.1 Copies of all messages, in their entirety, transmitted by an AFTN origin station shall be retained for a period of at least 30 days. Note.— The AFTN origin station, although responsible for ensuring that AFTN traffic is recorded, is not necessarily the unit where the records are made and retained. By local agreement the State concerned may permit the originators to perform those functions. 4.4.1.6.2 AFTN destination stations shall retain, for a period of at least 30 days, a record containing the information necessary to identify all messages received and the action taken thereon. Note.— The provision for identification of messages mentioned in 4.4.1.6.2 may be obtained by recording the heading, address and origin parts of messages. 4.4.1.6.3 Recommendation.— AFTN communication centres should retain, for a period of at least 30 days, a record containing the information necessary to identify all messages relayed or retransmitted and the action taken thereon. Note 1.— The provision for identification of messages mentioned in 4.4.1.6.3 may be obtained by recording the heading, address and origin parts of messages. Note 2.— Provisions relating to short-term retention of AFTN traffic records in AFTN communication centres are contained in 4.4.1.7. 4.4.1.7 Short-term retention of 4.4.1.7 AFTN traffic records 4.4.1.7.1 Except as provided in 4.4.1.7.2, AFTN communication centres shall retain, for a period of at least one hour, a copy of all messages, in their entirety, retransmitted or relayed by that communication centre. 2007/70/II. szám Chapter 4 Annex 10 — Aeronautical Telecommunications 4-7 1/11/01 4.4.1.7.2 In cases where acknowledgement is made between AFTN communication centres, a relay centre shall be considered as having no further responsibility for retransmission or repetition of a message for which it has received positive acknowledgement, and it may be deleted from its records. Note.— Provisions relating to long-term retention of AFTN traffic records in AFTN communication centres are contained in 4.4.1.6. 4.4.1.8 Test procedures on 4.4.1.8 AFTN channels 4.4.1.8.1 Recommendation.— Test messages transmitted on AFTN channels for the purpose of testing and repairing lines should consist of the following: 1) the start-of-message signal; 2) the procedure signal QJH; 3) the originator indicator; 4) three page-copy lines of the sequence of characters RY in ITA-2 or U(5/5) *(2/10) in IA-5; and 5) the end-of-message signal. 4.4.2 Message format — International Telegraph Alphabet No. 2 (ITA-2) All messages, other than those prescribed in 4.4.1.8 and 4.4.9.3, shall comprise the components specified in 4.4.2.1 to 4.4.6.1 inclusive. Note 1.— An illustration of the ITA-2 message format is given in Figure 4-1. Note 2.— In the subsequent Standards relative to message format the following symbols have been used in making reference to the functions assigned to certain signals in the International Telegraph Alphabet No. 2 (see Volume III, Part I, 8.2.1 and Table 8-1): Symbol Signification < CARRIAGE RETURN (signal no. 27) ≡ LINE FEED (signal no. 28) ↓ LETTER SHIFT (signal no. 29) ↑ FIGURE SHIFT (signal no. 30) → SPACE (signal no. 31) 4.4.2.1 Heading 4.4.2.1.1 The heading shall comprise:

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