Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4295

255. The address shall be extracted from the called DTE address contained in the ISO 8208 packet and converted to binary representation. 5.2.5.2.1.1.11 Fill field. The fill field shall be used to align subsequent data fields on byte boundaries. When indicated as “FILL:n”, the fill field shall be set to a length of “n” bits. When indicated as “FILL1: 0 or 6”, the fill field shall be set to a length of 6 bits for a non-multiplexed packet in a downlink SLM frame and 0 bit for all other cases. When indicated as “FILL2: 0 or 2”, the fill field shall be set to a length of 0 bit for a non-multiplexed packet in a downlink SLM frame or for a multiplexing header and 2 bits for all other cases. 5.2.5.2.1.1.12 S field (S). A value of 1 shall indicate that the packet is part of an S-bit sequence with more packets in the sequence to follow. A value of 0 shall indicate that the sequence ends with this packet. This field shall be set as specified in 5.2.5.1.4.2. 5.2.5.2.1.1.13 FS field (FS). A value of 0 shall indicate that the packet does not contain fast select data. A value of 2 or 3 shall indicate that the packet contains fast select data. A value of 2 shall indicate normal fast select operation. A value of 3 shall indicate fast select with restricted response. An FS value of 1 shall be undefined. 5.2.5.2.1.1.14 First packet flag (F). This field shall be set to 0 in the first packet of an S-bit sequence and in a packet that is not part of an S-bit sequence. Otherwise it shall be set to 1. 5.2.5.2.1.1.15 User data length (LV). This field shall indicate the number of full bytes used in the last SLM or ELM segment as defined in 5.2.2.3.1. 5.2.5.2.1.1.16 User data field (UD). This field shall only be present if optional CALL REQUEST user data (maximum 16 bytes) or fast select user data (maximum 128 bytes) is contained in the ISO 8208 packet. The user data field shall be transferred from ISO 8208 packet unchanged using S-bit processing as specified in 5.2.5.1.4.2. 5.2.5.2.1.2 Translation into ISO 8208 packets 5.2.5.2.1.2.1 Translation. Reception by the GDLP reformat-ting process of a Mode S CALL REQUEST by ADLP packet (or an S-bit sequence of packets) from the GDCE shall result in the generation of a corresponding ISO 8208 CALL REQUEST packet to the local DCE. The translation from the Mode S packet to the ISO 8208 packet shall be the inverse of the processing defined in 5.2.5.2.1.1 with the exceptions as specified in the following paragraph. 5.2.5.2.1.2.2 Called DTE, calling DTE address and length fields. The calling DTE address shall be composed of the aircraft address and the value contained in the AM field of the Mode S packet, converted to BCD (5.2.3.1.3.2). The called DTE address shall be the ground DTE address contained in the AG field of the Mode S packet, converted to BCD. The length field shall be as defined in ISO 8208. 5.2.5.2.2 CALL REQUEST BY GDLP 5.2.5.2.2.1 Translation into Mode S packets 5.2.5.2.2.1.1 General. Reception by the GDLP reformatting process of an ISO 8208 CALL REQUEST packet from the local DCE shall result in the generation of corresponding Mode S CALL REQUEST by GDLP packet(s) (as determined by S-bit processing (5.2.5.1.4.2)) as follows: Fields shown in the packet format and not specified in the following paragraphs shall be set as specified in 5.2.5.2.1. DP:1 MP:1 SP:2 ST:2 FILL:2 P:1 FILL:1 SN:6 FILL:2 TC:2 AM:4 AG:8 S:1 FS:2 F:1 LV:4 UD:v 2007/70/II. szám Annex 10 — Aeronautical Telecommunications Volume III 5-14 28/11/02 No. 77 5.2.5.2.2.1.2 Data packet type (DP). This field shall be set to 0. 5.2.5.2.2.1.3 MSP packet type (MP). This field shall be set to 1. 5.2.5.2.2.1.4 Supervisory packet (SP). This field shall be set to 1. 5.2.5.2.2.1.5 Supervisory type (ST). This field shall be set to 0. 5.2.5.2.2.1.6 Temporary channel number field (TC). This field shall be used to distinguish multiple call requests from a GDLP. The ADLP reformatting process, upon receipt of a temporary channel number, shall assign a channel number from those presently in the READY state, p1. 5.2.5.2.2.1.7 Address, ground (AG). This address shall be the ground DTE address (5.2.3.1.3.1) in the range of 0 to 255. The address shall be extracted from the calling DTE address contained in the ISO 8208 packet and converted to binary representation. 5.2.5.2.2.1.8 Address, mobile (AM). This address shall be the mobile DTE sub-address (5.2.3.1.3.2) in the range of 0 to

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