On Mon, Oct 17, 2016 at 7:14 AM, Kurt McCullum <kurt.mccul...@att.net>

> Even though the buffer is 256 bytes in size, TELCOM sends the XON/XOFF
> commands when the buffer is only slightly full, so I have had to block the
> sending of the data in small packets and check for XOFF.
The serial receive buffer is 64 bytes.

-- John.

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