Date: Mon, 06 Nov 2000 00:08:79 -700
From: [EMAIL PROTECTED]
Subject: Re: USR Courier HST 14.4 Revisited
On 2000-11-05 [EMAIL PROTECTED] said:
>Well, that answers that question. The other ports don't exist,
>which is probably why the software you used to test didn't indicate
>an IRQ for any of them. Only COM1 showed an IRQ value. A 16450
>can do 19200, and that would be adequate for 2:1 compression (MNP5)
>at 9600.
So if something is limiting my access to 9600, it's probably the
modem, not the XT port.
>Well, if the manual indicates that it is supposed to set V.32 mode
>when you use B0 in the init string, then all you can do is use that
>command. It's too bad that the ATI7 command doesn't confirm the
>availability of V.32 on the modem, but that doesn't matter if it
>can be made to work.
Although the bottom of the modem has many different commands, I'm
inclined to suspect that they don't completely match this modems
actual capabilities. For one thing, it doesn't say I can use &K3,
but the diagnostic test says the modem recognizes this command.
Perhaps this modem got some sort of upgrade since it was manufactured?
I experiment with the following string that gave a noticable improvement
in CPS rate:
AT&FB0X7&C1&D2&M5&H1&R2&K1&B1&S1 S10=15
When downloading two different sites, I got readings with Net-Tamer of
CPS 526 and 458. The real surprise was that I got CPS 1442 when
downloading a file from my ISP!
>The download rates from the websites do suggest some compression,
>though with websites it's hard to tell how much compression you're
>getting. If the compression method is MNP5, it shouldn't be better
>than 2:1. If V.42bis is used, compression can be up to 4:1, but
>not usually that good. If you could connect to your own ISP using
>FTP and download a file from there, you'd have a better measure of
>the performance.
Jerry >>>> USR Courier HST--V.32 | IBM PC/XT & PC Color Display <<<<
>>>>> PC DOS 3.3 & WordStar 3.30p | 20 MB HDD & 360K FDD <<<<<
Net-Tamer V 1.11.2X - Registered
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