*** Quoting Mike Martin to Bill Reyna dated 02-16-97 ***
> well I have discovered a few things since I left the last message, I 
> have forced my connect to 31200 and I no longer hang.  I believe my 
> problem and maybe yours was that my serial port on my computer (or the 
> computer itself) cannot handle speeds above 31200.  I found my old 
Do you think it's the serial port or the modem itself? I have a SupraFax 28.8 
which has been flash upgraded to 33.6, and I get pitiful transfer speeds if I 
get a 33.6 connect. I think it's a problem with the modem, because if it's 
the serial port, should the hardware flow control not take care of it? 
There was a magazine review where they tested a number of various 33.6 
modems. The SupraExpress 33.6 modem was about 1000 cps BEHIND all other 
modems. 
I have my port locked at 115200 and I never notice any problems, _until_ I 
get a 33.6 connect. Perhaps I'm wrong, but I think that *ALL* data, 
regardless of the connect speed, is flowing to and from the modem at 
115200bps. The fact that the DCE speed is 33.6 should not have any effect on 
the speed that the information is hitting the DTE at. 
>  I would check the max serial speed on your system, it may be the 
> source of all your problems.
I suppose I could build a loop-back plug and check to make sure that 
nothing's lost at 115.2, but it already hands that port speed fine. I'm 99.9% 
positive that it's the modem which can't handle the 33.6 speeds, not the 
serial port. 
I'd like to hear from anyone with a supraFax.. (or maybe a suprasonic) who 
can tell me they get good transfers (cps) during a 33.6 connect. If the 
speeds are good (3800cps) tell me what ATI7 reports from your modem. 
I have a feeling that it was purely a "fluke" that some of the 28.8 modems 
were able to "handle" 33.6 speeds. I say handle, because maybe they can make 
a 33.6 connect, but they sure can't handle 33.6 speeds. 31.2 is fine.... and 
I think that's pushing the limits of the datapump. If you get good 33.6 
transfers... I'd be curious in knowing if your datapump is a newer revision 
than others.
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