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Tl Posts:

Posted - 3/1/2001 10:30:50 AM  Show Profile  Email Poster  Edit Message

I use in Spain an USRobotics Courier V.Everything external, recently upgraded to x2 and V.90
This old modem have always worked fine, but I'm not getting connections over 40.000 bps. so I have tried to check A/D conversions, but...
When I try to use the ATY11 command after a call to my ISP, I only get the following lines:

Freq Level


I have tried several times, connecting with Hyperterminal, hanging after 15 or so seconds before issuing aty11. Also I have connected with the Win98 NAT, hanging after 15 seconds, launching Hyperterminal and issuing aty11, with the same results.

Have you any idea about why don't work aty11 (or what I'm doing wrong)? I will be grateful if you can give me any advice.

Javier Tel

Tl Posts:

Posted - 3/2/2001 1:29:25 AM  Show Profile  Email Poster  Edit Message
The driver that Windows is using is causing the Modem to be reset after you disconnect.

There are two things you can do.

(1) Use the Courier V.90 .INF file included with the SDL instead of Windows's driver. (Note: The Windows Courier driver has a bug in it that sometimes reports the DTE rate on connections, so replacing the .INF wouldn't be a bad idea)

(2) Enable the "Open Terminal Window After Dialing" feature of Dialup Networking, and after connecting to your ISP, type +++ and when the Modem responds with, "OK", you can use ATi6, ATi11, and ATY11 or any other AT command.

Tl Posts:

Posted - 3/5/2001 5:24:03 PM  Show Profile  Email Poster  Edit Message

Thank you very much for your advice.
I have checked that I had yet installed the .INF that came with the v.90 upgrade, so I tried the other approach and it have worked.

Now I'm using the ATI6/Y11/I11 commands to check my line.
Curiously, all seems be OK (no multiple A/D conversions, no lots of "BLERs", etc.), but I don't get connections over 40000bps, and more habitual is that they are in the 32000/36000 range. The only things a bit suspiciuos are the Codec Distortion (27.7!), the SNR (32.7db, a bit lower, I think), and the Roundtrip Delay (15msec).

Surely I need to work more in this issue...


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