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Chris Gross
Tl Posts:
2

Posted - 2/11/2001 6:40:04 PM  Show Profile  Email Poster  Edit Message
Im using an OEM USR 56k FAX PCI (code 2977) which had run fine in my system for months, with fairly fast, stable connects (45-50k on average). For the past few months however, Ive been experiencing near constant retrains (I seem to average 1 every 2 min sometimes). Ive tried lowering my connect speed, down to 28.8 even, which seems to end "Retrains Requested", but I still get a high number of "Retrains Granted".

Im not sure the exact time when my trouble happened, but the telco did install a new switchboard a while back, and I did have an incident where a power surge fried my power supply and motherboard (though all my cards seemed unaffected...not sure about the modem anymore though). I did have a telco repairman come out to check my lines, but Im not sure he did anything other than pick up my phone, put it to his ear, and say "yeah, sounds fine, must be your machine, bye". ATI6I11Y11 results follow, for three different connect speeds. Can anyone with more knowledge than I give an opinion as to my problem?
-------------------------------------------------------
ati11
U.S. Robotics 56K FAX INT 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) 0/2
Recv/Xmit Level (-dBm) 19/12
Near Echo Loss (dB) 9
Far Echo Loss (dB) 0
Carrier Offset (Hz) NONE
Round Trip Delay (msec) 5
Timing Offset (ppm) 3434
SNR (dB) 51.2
Speed Shifts Up/Down 7/21
Status : uu,5,12N,15.9,-7,0N,0,48.3,14.9
OK
ati6
U.S. Robotics 56K FAX INT Link Diagnostics...

Chars sent 207578
Chars Received 1874378
Chars lost 0
Octets sent 104962
Octets Received 1223458
Blocks sent 4896
Blocks Received 10441
Blocks resent 349

Retrains Requested 23
Retrains Granted 24
Line Reversals 0 Blers 166
Link Timeouts 57
Link Naks 21

Data Compression V42BIS 2048/32
Equalization Long
Fallback Enabled
Protocol LAPM
Speed 50666/28800
V.90 Peak Speed 50666
Last Call 00:34:56

Disconnect Reason is DTR dropped

OK
------------------------------------------------------
ati6
U.S. Robotics 56K FAX INT Link Diagnostics...

Chars sent 71847
Chars Received 673436
Chars lost 0
Octets sent 40691
Octets Received 338428
Blocks sent 1609
Blocks Received 2869
Blocks resent 114

Retrains Requested 1
Retrains Granted 27
Line Reversals 0 Blers 31
Link Timeouts 76
Link Naks 7

Data Compression V42BIS 2048/32
Equalization Long
Fallback Enabled
Protocol LAPM
Speed 31200/33600
Last Call 00:26:15

Disconnect Reason is DTR dropped

OK
ati11
U.S. Robotics 56K FAX INT Link Diagnostics...


Modulation V.34+
Carrier Freq (Hz) 1959/1959
Symbol Rate 3429/3429
Trellis Code 64S-4D/64S-4D
Nonlinear Encoding ON/ON
Precoding OFF/ON
Shaping OFF/ON
Preemphasis (-dB) 0/2
Recv/Xmit Level (-dBm) 19/11
Near Echo Loss (dB) 36
Far Echo Loss (dB) 58
Carrier Offset (Hz) 2646
Round Trip Delay (msec) 5
Timing Offset (ppm) 3536
SNR (dB) 37
Speed Shifts Up/Down 17/15
Status :

OK
aty11

Freq Level (dB)

150 20
300 18
450 18
600 17
750 17
900 17
1050 17
1200 17
1350 17
1500 17
1650 17
1800 17
1950 17
2100 17
2250 18
2400 18
2550 18
2700 18
2850 18
3000 18
3150 18
3300 18
3450 19
3600 23
3750 27
OK
------------------------------------------------------
ati11
U.S. Robotics 56K FAX INT Link Diagnostics...


Modulation V.34
Carrier Freq (Hz) 1959/1959
Symbol Rate 3429/3429
Trellis Code 64S-4D/64S-4D
Nonlinear Encoding ON/ON
Precoding OFF/ON
Shaping OFF/ON
Preemphasis (-dB) 0/2
Recv/Xmit Level (-dBm) 19/12
Near Echo Loss (dB) 37
Far Echo Loss (dB) 58
Carrier Offset (Hz) 2142
Round Trip Delay (msec) 5
Timing Offset (ppm) 3632
SNR (dB) 36
Speed Shifts Up/Down 1/0
Status :

OK
ati6
U.S. Robotics 56K FAX INT Link Diagnostics...

Chars sent 96382
Chars Received 1152159
Chars lost 0
Octets sent 54174
Octets Received 692780
Blocks sent 2710
Blocks Received 5736
Blocks resent 118

Retrains Requested 0
Retrains Granted 24
Line Reversals 0 Blers 19
Link Timeouts 29
Link Naks 9

Data Compression V42BIS 2048/32
Equalization Long
Fallback Enabled
Protocol LAPM
Speed 28800/28800
Last Call 00:17:59

Disconnect Reason is DTR dropped

OK
aty11

Freq Level (dB)

150 20
300 18
450 18
600 17
750 17
900 17
1050 17
1200 17
1350 17
1500 17
1650 17
1800 17
1950 17
2100 17
2250 18
2400 18
2550 18
2700 18
2850 18
3000 18
3150 18
3300 18
3450 19
3600 23
3750 27
OK

v.Richard
Tl Posts:
6222

USA
Posted - 2/17/2001 9:43:17 AM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
It's possible there's something wrong with your modem, the telco facilities, or at your ISP.
Try to isolate:
Try calling other ISP #s
www.808news.com/56k/trouble1.htm
www.808news.com/56k/trouble4.htm

www.808news.com/56k/demarc.htm

If you could borrow another [preferrably USR-external] modem, try it.
If possible, take computer/modem to another location & try it.

Aloha,
Richard

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