[aprssig] Mystery packet
Lynn W. Deffenbaugh (Mr) ldeffenb at homeside.toThu Dec 10 13:39:53 UTC 2009
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Pete Loveall AE5PL Lists wrote: > So, bottom line is the TNC that was used to receive this packet indicated all digi'ed bits in the text representation of the packet which is perfectly acceptable as there is no monitor format in the AX.25 spec. The spec describes the link protocol, not the presentation of that information. > > The only thing not mentioned in this thread so far is that the AX.25 packets on the air actually HAVE the "Used" bits set on ALL of the leading stations in the path. It is only the humanly-readable format that sometimes (most of the time) suppresses the earlier ones and only puts the * on the last packet in the path to have been marked "used". This drove me nuts the first time I tried to interpret raw KISS packets (barely wrappered AX.25) and thought my program was buggy due to all of the *s I was seeing. Lynn (D) - KJ4ERJ
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