Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4520

c) interworking function. 11.3.4.3.1 HFSND FUNCTION The HFSND function shall perform the HFSND protocol between each pair of HFDL aircraft station sub-systems and HFDL ground station sub-systems by exchanging HFNPDUs. It shall perform the HFSND protocol aircraft function in the HFDL aircraft station sub-system and the HFSND protocol ground function in the HFDL ground station sub-system. 11.3.4.3.2 SUBNETWORK ACCESS FUNCTION The subnetwork access function shall perform the ISO 8208 protocol between the HFDL aircraft station sub-system or HFDL ground station sub-system and the attached routers by exchanging ISO 8208 packets. It shall perform the ISO 8208 DCE function in the HFDL aircraft station sub-system and the HFDL ground station sub-system. 11.3.4.3.3 INTERWORKING FUNCTION The interworking function shall provide the necessary harmonization functions between the HFSND, the subnetwork access and the connectivity notification functions. 11.4 GROUND MANAGEMENT SUB-SYSTEM Note.— Details on the ground management sub-system functions and interfaces are contained in the Manual on HF Data Link (Doc 9741). 11.4.1 Management functions The ground management sub-system shall perform the functions necessary to establish and maintain communications channels between the HFDL ground and aircraft station sub-systems. 11.4.2 Management/control information exchange The ground management sub-system shall interface with the ground station sub-system in order to exchange control information required for frequency management, system table management, log status management, channel management, and quality of service (QOS) data collection. 338F 27/11/03 No. 78 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám 2007/70/II. szám ANNEX 10 — VOLUME III 5/11/95 CHAPTER 4. AERONAUTICAL SPEECH CIRCUITS 4.1 TECHNICAL PROVISIONS RELATING TO INTERNATIONAL AERONAUTICAL SPEECH CIRCUIT SWITCHING AND SIGNALLING FOR GROUND-GROUND APPLICATIONS Note.— Guidance material on the implementation of aeronautical speech circuit switching and signalling for ground-ground applications is contained in the Manual on Air Traffic Services (ATS) Ground-Ground Voice Switching and Signalling (Doc 9804). The material includes explanation of terms, perfor-mance parameters, guidance on basic call types and additional functions, references to appropriate ISO/IEC international standards and ITU-T recommendations, guidance on the use of signalling systems, details of the recommended numbering scheme and guidance on migration to future schemes. 4.1.1 The use of circuit switching and signalling to provide speech circuits to interconnect ATS units not interconnected by dedicated circuits shall be by agreement between the Administrations concerned. 4.1.2 The application of aeronautical speech circuit switching and signalling shall be made on the basis of regional air navigation agreements. 4.1.3 Recommendation.— The ATC communication requirements defined in Annex 11, Section 6.2 should be met by implementation of one or more of the following basic three call types:

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