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| Stu Tl Posts: 3 USA | Posted - 5/25/2004 7:26:40 PM    I am running Windows XP Home Edition with a USR5610B modem. All software/firmware is up-to-date (i.e. firmware at V5.22.70). I am using the USR driver, not the Windows XP driver. The problem is that I never get any compression through my ISP. The status window always says "Compression (none)". At every place I can find, I have compression turned on. Another interesting fact is that I am getting some VERY strange diagnostics in the modem log messages. I've inserted them below, but if you look closely you will see that they are the output of the AT#UD command fed character by character to the modem with each one getting "Unknown Response". What's going on? Thanks, Stu . . . 05-25-2004 18:33:44.921 - Recv: D 05-25-2004 18:33:44.921 - Unknown Response 05-25-2004 18:33:44.921 - Recv: I 05-25-2004 18:33:44.921 - Unknown Response 05-25-2004 18:33:44.921 - Recv: A 05-25-2004 18:33:44.921 - Unknown Response 05-25-2004 18:33:44.921 - Recv: G 05-25-2004 18:33:44.921 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: < 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 2 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: A 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 4 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: D 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 3 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 2 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 6 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 3 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 3 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 0 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: = 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 0 05-25-2004 18:33:44.937 - Unknown Response 05-25-2004 18:33:44.937 - Recv: 0 05-25-2004 18:33:44.937 - Unknown Response . . . |
| v.Richard Tl Posts: 6222 USA | Posted - 5/26/2004 1:07:48 AM  You are looking at a measurement of compression where compression isn't taking place. To verify/measure compression - you can measure throughput / do speedtests on highly compressible data - www.modemsite.com/56k/x2-thru.asp www.modemsite.com/56k/speedtest.asp The AT#UD is discussed on Aloha! Richard. |
| Stu Tl Posts: 3 USA | Posted - 5/26/2004 6:48:17 PM Richard, You are, of course, 100% correct. Making the changes to the ".inf" file and updating the modem driver as documented on this website worked PERFECTLY. It completely astounds me that a company like 3Com can't get their modem driver files to work properly with the AT#UD. Has anyone tried to tell 3Com that they need to make these changes to their drivers? Concerning compression, I now know (from the #UD diagnostics) that compression is turned on. However, it's not clear to me why, when I click on the connection symbol in the Systray and get the status window, I don't see compression "on" on the "General" or "Details" tabs. I'm pretty sure I have seen it "on" on other computers. I'm pretty sure I've seen a statistic there for the compression % for both, sent and received, but not on my computer. Stu |
| v.Richard Tl Posts: 6222 USA | Posted - 5/27/2004 10:45:48 AM The compression you are looking at is Windows' compression in the PPP-link. This compression is basically irrelevant if the modem has compression turned on. If you turn modem compression off, and if you set networking tcp/ip properties for the dial-up to use compression, (and if the RAS has it enabled), you should see some compression in that indicator. However, the original modem-compression setting is probably best for overall throughput. Aloha! Richard. |
| Stu Tl Posts: 3 USA | Posted - 5/27/2004 11:32:43 AM Richard, Thank you. You and this website have been a HUGE help. Stu |
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