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<p><a href="page.php?w=Point-to-Point_Protocol">PPP</a>, and <a href="page.php?w=Ethernet">Ethernet</a></p>

<p><big> HDLC </big></p>
<p>When using <a href="page.php?w=High-Level_Data_Link_Control">HDLC</a>, rather than each byte having a start, optional parity, and one or two stop bits, the bytes are gathered together into a <a href="page.php?w=data_frame">frame</a>. The start and end of the frame are signalled by the 'flag', and error detection is carried out by the frame check sequence. If the frame has a maximum-sized address of 32 bits, a maximum-sized</p><p>
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