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[HLL] Async-rate



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Hi,


> I've got some thoughts on async solutions too.  You want to be sure
> that you are minimizing latency.  Latency is *way* more important from
> a usability viewpoint than throughput.  There are a host of speech
> coders to choose from.  Use one that fits within the bandwidth you've
> got available.  I think that if you run some experiments, you will
> rapidly come to the conclusion that you want to turn V.42 off.  In
> that case, you're looking at a net throughput of 1440 bytes/sec on a
> 14,400 bps channel.

Practical tests showed transfer-rates below expected 1440 bytes/sec.
Typical values seem to be in the range of 1320 bytes/sec.

What is the reason for the difference ?
What will be the minimum transfer-rate to expect ?

Baud-rate modem/pc was 38400, so there is no problem to fill up
buffers inside the modem and there is no (rts/cts) handshake-related delay.
I didn't use xmodem, but sended a very long file one way - no handshake either.


Volker

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