Publication: Magyar Közlöny
Issue: MK-2007-70 (Year: 2007, Number: 70)
Era: 2004-2010
Section: Melléklet a 2007. évi XLVI. törvényhez
Paragraph Index: 4327

c) forward this data to the Mode S specific services interface(s) (5.2.3.2.2). L-bit processing shall be performed as specified in 5.2.7.4. 5.2.7.3 MSP PACKET FORMATS 5.2.7.3.1 Short form MSP packet. The format for this packet shall be as follows: 5.2.7.3.1.1 Data packet type (DP). This field shall be set to 0. 5.2.7.3.1.2 MSP packet type (MP). This field shall be set to 0. 5.2.7.3.1.3 MSP channel number (M/CH). The field shall be set to the channel number derived from the SSE control data. 5.2.7.3.1.4 Fill field (FILL1:0 or 6). The fill length shall be 6 bits for a downlink SLM frame. Otherwise the fill length shall be 0. 5.2.7.3.1.5 User data (UD). The user data field shall contain message data received from the Mode S specific services interface (5.2.3.2.2). 5.2.7.3.2 Long form MSP packet. The format for this packet shall be 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 and 5.2.7.3.1. 5.2.7.3.3 Data packet type (DP). This field shall be set to 0. 5.2.7.3.3.1 MSP packet type (MP). This field shall be set to 1. 5.2.7.3.3.2 Supervisory packet (SP). This field shall be set to 0. 5.2.7.3.3.3 L field (L). A value of 1 shall indicate that the packet is part of an L-bit sequence with more packets in the sequence to follow. A value of 0 shall indicate that the sequence ends with this packet. 5.2.7.3.3.4 MSP sequence number field (M/SN). This field shall be used to detect duplication in the delivery of L-bit sequences. The first packet in an L-bit sequence shall be assigned a sequence number of 0. Subsequent packets shall be numbered sequentially. A packet received with the same sequence number as the previously received packet shall be discarded. 5.2.7.4 L-bit processing. L-bit processing shall be performed only on the long form MSP packet and shall be performed as specified for M-bit processing (5.2.5.1.4.1) except as specified in the following paragraphs. 5.2.7.4.1 Upon receipt of a long form MSP packet, the XDLP shall construct the user data field by:

Source: https://magyarkozlony.hu/hivatalos-lapok/7e70cec03f34e3c2efd8610b865b65591eafd701/dokumentumok/a55dc160549d57fa4db0035e37c6a6a98dd1a0b9/letoltes