From: John Ackermann (terhi.victor@logonet.com)
Date: Tue Feb 01 2000 - 15:13:53 EET
In message <terhi.victor@logonet.com>, Jan W
asserbauer writes:
>Hi ..
> I wonder what is the real purpose of txtail.
>All data has been TX'd so what is the purpose of waiting before releasing
>PTT ?
>Is it important for decoder or something ?
>
>Omitting txtail would simplify drivers etc.
>
> Jan
Not all hardware implementations need it, but there are at least some systems
where dropping the PTT immediately results in the tail end of the packet
(including the CRC and closing flag) to be chopped off. On our 19.2kb
system using Ottawa PI cards, we need a TXTail of 3ms or so to reliably
transmit uncorrupted packets.
John N8UR
terhi.victor@logonet.com
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