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malcolm
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USA		Posted - 1/27/2004 8:11:33 PM  Show Profile  Email Poster  Edit Message
I've tried several v.92 modems, and they all give slower connect speeds than my old DSI/Creative 3635 pci v.90.

I tried a USR 5610B, Zoom 3049 ext, and now an Actiontec PCI V9219 (agere 1648c chip). Actiontec says the driver I have is up to date.

None of the v.92 modems will ever get above 34,600. Connections are usually from 28 to 34.6.
As soon as I take each v.92 out and put the old DSI v.90 back in (often w/in minutes of removing the v.92), the connections go right back up to 45,333 to 48,000. It has been consistent with each new v.92 modem, so I'm 99.99% sure it's not a line quality issue.

I've tried calls to lots of ISPs - same results.
None of the modem support people have ever had any suggestions or gave me instructions that made any difference.

Any suggestions? Is there a reason that most v.92 modems would connect slower on the same lines that my old v.90 gets pretty good speeds?

v.Richard
Tl Posts:
6222

USA		Posted - 1/28/2004 12:18:29 PM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
It might be the DSI/Creative speeds aren't really the speed the modem stays at -
I would suggest checking your throughput with the 3635 -
www.modemsite.com/56k/x2-thru.asp

Do you still have the other modems?
If so, would like to see post-call diags from USR
ati6i11y11
and Actiontec's ati11
www.modemsite.com/56k/diag.asp

Aloha! Richard.

malcolm
Tl Posts:
4

USA		Posted - 2/5/2004 9:18:20 AM  Show Profile  Email Poster  Edit Message
Richard,
I did look at the Actiontec ati11 command, but not the other two modems, which I no longer have. The actiontec showed no unusual info - no retrains, initial and final receive rates were =.

I did notice that w/ the Actiontec, I got slightly higher connection speeds by forcing it to connect at v.90, even if I was dialing a server that supports v.92. But still lower than the old DSI 3635 v.90 modem.

Since first posting, I removed the Actiontec, and tried a Zoom 3025c pci. Immediately the connection rates went up to where they'd always been with the DSI 3635.

It would be incredible to think that only one out of 4 modems would work correctly. Is this possible?

v.Richard
Tl Posts:
6222

USA		Posted - 2/5/2004 11:03:43 AM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
Possible explanation: some modems tend to connect at a speed higher than can really be supported. You feel good ("Hey I've got a high speed"). But, almost immediately, the modem changes to lower speed. Put it to the test: check your throughput....
www.modemsite.com/56k/x2-thru.asp

Aloha! Richard.

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