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Tl Posts:

Posted - 12/27/2000 5:55:46 PM  Show Profile  Email Poster  Edit Message
I've been having trouble with my internet connection for quite a while now and had just been living with it. I ran some the diags on my USR Sportster External model 5686, and here's what I got:ati6 results

U.S. Robotics 56K FAX EXT Link Diagnostics...

Chars sent 1035806 Chars Received 9821347
Chars lost 0
Octets sent 494605 Octets Received 9040104
Blocks sent 31966 Blocks Received 72926
Blocks resent 51

Retrains Requested 0 Retrains Granted 0
Line Reversals 0 Blers 136
Link Timeouts 6 Link Naks 3

Data Compression V42BIS 2048/32
Equalization Long
Fallback Enabled
Protocol LAPM
Speed 45333/31200
V.90 Peak Speed 45333
Last Call 01:14:42

Disconnect Reason is DTR dropped

ati11 results

U.S. Robotics 56K FAX EXT Link Diagnostics...

Modulation V.90
Carrier Freq (Hz) None/1920
Symbol Rate 8000/3200
Trellis Code None/64S-4D
Nonlinear Encoding None/ON
Precoding None/ON
Shaping ON/ON
Preemphasis (-dB) 24325/4
Recv/Xmit Level (-dBm) 22/15
Near Echo Loss (dB) 2
Far Echo Loss (dB) 0
Carrier Offset (Hz) NONE
Round Trip Delay (msec) 6
Timing Offset (ppm) 2798
SNR (dB) 43.5
Speed Shifts Up/Down/Null 5/8/6
Status : uu,5,12N,12.3,-0,0N,000,41.0,30.2

Any Ideas as to what my problem is?

Tl Posts:

Posted - 12/27/2000 10:44:19 PM  Show Profile  Email Poster  Edit Message  SARGEs Homepage
Another reason I like USR - the stats it gives are superior to other modems. Log looks good. Type aty11 and see the #'s. What problem are you having?
Tl Posts:

Posted - 12/28/2000 9:58:59 AM  Show Profile  Email Poster  Edit Message
I'm getting poor throughput. On smaller downloads I can get around 4.4k per sec, but on larger (and longer) downloads I often top out at around 3.4. I've monitored the throughput using netstats, and I can see it spiking to 5.6 and higher, only to drop down to 2.6 then back up again.

I'm also getting horrible gaming lag. The connection will be solid for a little while, then turn to crap with lots of packet loss etc, then it clears up again for a bit.

Here's the results of aty11:

Freq Level (dB)

150 23
300 21
450 21
600 21
750 21
900 21
1050 21
1200 21
1350 21
1500 21
1650 21
1800 21
1950 21
2100 22
2250 22
2400 22
2550 22
2700 22
2850 22
3000 22
3150 22
3300 23
3450 24
3600 27
3750 31

Edited by - cbyrdjr on 12/28/00 10:05:19 AM

Tl Posts:

Posted - 12/28/2000 10:21:28 AM  Show Profile  Email Poster  Edit Message  SARGEs Homepage
I wish I had your aty11 - they're outstanding. For games, try s32=98 in extra settings under modem properties. It will cap you at 28.8, but it's better for games. This site has a piece on gamers' lag. Otherwise, your problems are really the result of the 56k world. Only alternatives are DSL, Cable, ISDN or T1.
Tl Posts:

Posted - 12/28/2000 11:33:57 AM  Show Profile  Email Poster  Edit Message
Yeah, that's what I don't get really. If I plug a real phone (not cordless) into this line and take it off hook and dial 1 to silence the dialtone, the line sounds clear. The results of the modem diagnostics seem to suggest that something is funny though. ATy11 looks great, but for some reason I'm seeing what looks like line trouble to me. Also, I read somewhere on this site that the last set of numbers in this line Status : uu,5,12N,12.3,-0,0N,000,41.0,30.2 should be in the mid teens at the highest, while mine is 30.2 :(
Tl Posts:

Posted - 1/2/2001 2:20:35 PM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
One thing I notice - your near echo loss at 2db may be a problem; the higher the number, the greater the loss at your line card hybrid; 2db is not much loss -
the effect being that much of the signal your modem transmits is echo'ed back to the modem which must separate that from the data actually sent by your ISP;
I would think you would 'hear' that on your line in voice calls by noticing that the echo of what you speak in the receiver is louder than with "normal" lines.


Tl Posts:

Posted - 1/2/2001 3:02:12 PM  Show Profile  Email Poster  Edit Message
Thanks for the info. Honestly I've never used the line for a normal voice call with a "real" telephone. The only time a phone has been plugged into it was to test for noise. I'll try a regular phone and see if I notice any unusual loudness or echo.

Is there anything at all that I can do about it if I do hear it? I know the phone company has been pulling new cable like they're gonna stop making the stuff. They've rewired the whole town. I'm wondering if some of the new equipment they've put in just doesn't like me

One more thing, I read something either here or on another site about being "too close" to the C.O. and the line being "too hot". Well, you don't get much closer to the C.O. than me, I'm 4 blocks away from it in a very rural town (I'm told less than 1100 feet). Could that be part of the problem, along with the brand new cabling etc that has been done here in the last year?
Edited by - cbyrdjr on 1/2/01 3:06:05 PM
Edited by - cbyrdjr on 1/2/01 7:50:20 PM

Tl Posts:

Posted - 1/4/2001 5:03:38 AM  Show Profile  Email Poster  Edit Message
Ok, I plugged a phone into the line and tested it with a few voice calls. I did notice some echo, but not much more than I get with my other line. I heard no static on the line at all. The telco recently replaced the lines in my neighborhood, and also the line feeding my demarc box from the pole. Do you think it's worth the trouble to try to get the telco to test it?
Tl Posts:

Posted - 1/4/2001 6:59:16 PM  Show Profile  Email Poster  Edit Message  SARGEs Homepage
Ask telco to run a transmission & noise test from your dmarc. Being so close, you don't have any loss in your line, making it too hot. They can, at no charge, place a unit in the office and a small one at dmarc to "add loss" to your line. Depending on your telco and location, good luck. If you're in a rural area, there may be some quizzical looks from telco when you ask for the test and fix. I wouldn't mention the modem just yet - tell 'em there's an echo on your line, as you said. Most telcos are bound by certain standards placed by state utility commissions. They should run the test and give you a copy of the readings. I do it regularly.
Edited by - SARGE on 1/4/01 7:01:45 PM
Tl Posts:

Posted - 1/9/2001 1:06:09 PM  Show Profile  Email Poster  Edit Message
Well, the telco came out and performed a test on my line while I wasn't there . Of course they found no noise on the line, even though I wasn't complaining about noise. Thanks for your help anyway, but I think I'm stuck until we get cable or dsl...which is going to be just after hell freezes over.
Tl Posts:

Posted - 1/9/2001 5:48:50 PM  Show Profile  Email Poster  Edit Message
One last update for this thread I guess. I re-installed a LT winmodem I had laying around and it seems to be more stable than my USR. Initial connection speeds are the same, but my download rates seem to be better, and the gaming lag has subsided quite a bit. Just shows you you can never tell I guess. While still not a perfect connection, it's better than what I had.

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