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Mary
Tl Posts:
6

USA
Posted - 5/11/2000 6:26:22 PM  Show Profile  Email Poster  Edit Message
Hi, I have the modem in my subject, but am having problems with it. My phone lines are good and I've done all the tests I've run accross in different forums. I have a program called modem check and when I check my connections after I have been online, the modulation says V.34 Shouldn't this say V.90? I don't know much about this stuff and really need some help. Are there some special settings I should have to make my connection better? Right now I'm lucky to connect at 28800 and that's after connecting and disconnecting a few times.

Edited by - Mary on 5/11/00 6:49:41 PM

shano64
Tl Posts:
16

Posted - 5/11/2000 9:41:28 PM  Show Profile  Email Poster  Edit Message
I have the same problem as Mary. I used to get hook up at 33000, but ever since I switched IPS's it has been at 21000 ALL the time. I also got modemckech yesterday and here are some results I copied hoping that somebody can see what the problem here.
( "/" = separator)

U.S. Robotics 56K Win INT Link Diagnostics

Modulation V.34 / Carrier Freq (Hz) 1600/1600 / Symbol Rate 2400/2400 / Trellis Code OFF/16S-4D
Nonlinear Encoding ON/OFF / Precoding OFF/OFF / Shaping ON/OFF / Preemphasis (-dB) 2/8
Recv/Xmit Level (-dBm) 30/16 / SNR (dB) 14 / Near Echo Loss (dB) 5 / Far Echo Loss (dB) 231
Roundtrip Delay (msec) 2 Status OK


B0 E0 F1 L0 M1 Q0 V1 X4 Y0 / BAUD=9600 PARITY=N WORDLEN=8 / DIAL=HUNT
ON HOOK CID=0
&A3 &C1 &D2 &G0 &H1 &I0 &K1 &M4 &N0 &P0 &R2 &S0 &T5 &U0 &Y1


S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002 S07=060 S08=002 S09=006 S10=007 S11=070 S12=050 S13=000 S15=000 S16=000 S18=000 S19=000 S21=010 S22=017 S23=019 S25=020 S27=000 S28=008 S29=020 S30=000 S31=128 S32=002 S33=000 S34=000 S35=000 S36=014 S38=000 S41=000


Chars sent 2232 Chars Received 2706 Chars lost 0 Octets sent 1444 Octets Received 4037
Blocks sent 102 Blocks Received 94 Blocks resent 0


Data Compression V42BIS 2048/32 Equalization Long Fallback Enabled Protocol LAPM
Speed 21600/21600

Product type US/Canada Internal Options V32bis,V.34+,x2,V.90,V.80 Fax Options Class 1/Class 2.0 Line Options Distinctive Ring,Caller ID DSP Freq 46.0Mhz DSP Ram 32k


Freq Level (dB)
300 26
450 24
600 24
750 24
900 24
1050 24
1200 24
1350 24
1500 24
1650 24
1800 24
1950 25
2100 25
2250 25
2400 25
2550 26
2700 26
2850 28
3000 29
3150 29
3300 31
3450 37
3600 44
3750 52


Before this when I was at 33000, was was getting 28000 until I went to http://members.aol.com/axcel216/ and learned some optimization tips that helped me get to 33000. But now I feel the disk I got from my new ISP messed up alot of the settings that were originally set by my PC maker.

TIA,
Shannon


Edited by - shano64 on 5/11/00 9:48:08 PM
Edited by - v.Richard on 5/14/00 12:22:02 PM
Edited by - v.Richard on 5/20/00 5:17:01 PM

Daveman_750
Tl Posts:
86

USA
Posted - 5/12/2000 1:26:22 PM  Show Profile  Email Poster  Edit Message  Daveman_750s Homepage
If your SNR is 15, something is NOT right. If it REGULARLY reports an SNR around 15, call your telco and don't even MENTION modem speed and say your line is noisier than you feel it should be. For a V.34 connect it should be around 30 on a decent line. Cant be higher than about 36 dB on a V.34 connect because of quantization noise. NOTE: IT CAN BE HIGHER ON A PCM CONNECT BECAUSE HERE THERE IS NO QUANTIZATION NOISE.
Daveman_750
Tl Posts:
86

USA
Posted - 5/12/2000 1:29:02 PM  Show Profile  Email Poster  Edit Message  Daveman_750s Homepage
BTW if you are getting V.34 connects mostly below 28800 and voice calls sound OK you PROBABLY have more than 1 a/d conversion.
Mary
Tl Posts:
6

USA
Posted - 5/12/2000 2:56:11 PM  Show Profile  Email Poster  Edit Message
here is what I got from modem check after disconnectingU.S. Robotics 56K Voice Win Link Diagnostics...

Modulation V.34
Carrier Freq (Hz) 1959/1959
Symbol Rate 3429/3429
Trellis Code 64S-4D/64S-4D
Nonlinear Encoding ON/OFF
Precoding OFF/OFF
Shaping ON/OFF
Preemphasis (-dB) 4/4
Recv/Xmit Level (-dBm) 23/13
SNR (dB) 0.1
Near Echo Loss (dB) 8
Far Echo Loss (dB) 238
Roundtrip Delay (msec) 7
Status

OK

U.S. Robotics 56K Voice Win RS Rev. 1.00.020

OK


U.S. Robotics 56K Voice Win Settings...

B0 E0 F1 L2 M1 Q0 V1 X4 Y0
BAUD=9600 PARITY=N WORDLEN=8
DIAL=HUNT ON HOOK CID=0

&A3 &C1 &D2 &G0 &H1 &I0 &K1
&M5 &N0 &P0 &R2 &S0 &T5 &U0 &Y1

S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=008
S07=060 S08=002 S09=006 S10=007 S11=070 S12=000 S13=000
S15=000 S16=000 S18=000 S19=000 S21=010 S22=017 S23=019
S25=020 S27=000 S28=008 S29=020 S30=000 S31=128 S32=002
S33=000 S34=000 S35=000 S36=014 S38=000 S41=000

LAST DIALED #: T8271444

OK


U.S. Robotics 56K Voice Win Link Diagnostics...

Chars sent 12545 Chars Received 75396
Chars lost 0
Octets sent 12856 Octets Received 75656
Blocks sent 656 Blocks Received 732
Blocks resent 13

Retrains Requested 0 Retrains Granted 25
REJs Received 0 Blers 19
Link Timeouts 14 Link Naks 0

Data Compression V42BIS 2048/32
Equalization Long
Fallback Enabled
Protocol LAPM
Speed 26400/28800
Last Call 00:05:58

Disconnect Reason is DTR dropped
OK


U.S. Robotics 56K Voice Win Configuration Profile...

Product type US/Canada Internal
Product ID 83297400
Options V32bis,V.34+,x2,V.90,V.80
Fax Options Class 1/Class 2.0
Line Options Distinctive Ring,Caller ID
Voice Options Speakerphone,TAD
DSP Freq 34.0Mhz
DSP Ram 32k

VXD date 04/29/99
VXD rev 1.00.020

OK


Freq Level (dB)
300 24
450 20
600 20
750 20
900 20
1050 20
1200 20
1350 20
1500 20
1650 20
1800 20
1950 20
2100 21
2250 21
2400 21
2550 21
2700 21
2850 21
3000 22
3150 22
3300 23
3450 25
3600 30
3750 39

OK


DIAG <2A4D3263 0=10>
DIAG <2A4D3263 1=4>
DIAG <2A4D3263 2=0>
DIAG <2A4D3263 3=0>
DIAG <2A4D3263 5="C1651310478D">
DIAG <2A4D3263 10=17>
DIAG <2A4D3263 11=D>
DIAG <2A4D3263 12=21>
DIAG <2A4D3263 13=0>
DIAG <2A4D3263 14=8>
DIAG <2A4D3263 15=EE>
DIAG <2A4D3263 16=282>
DIAG <2A4D3263 17=7>
DIAG <2A4D3263 18=6643D>
DIAG <2A4D3263 20=C 21=C>
DIAG <2A4D3263 22=D65>
DIAG <2A4D3263 23=D65>
DIAG <2A4D3263 24=7A7>
DIAG <2A4D3263 25=7A7>
DIAG <2A4D3263 26=7080 27=6720>
DIAG <2A4D3263 30=0 31=0 32=0 33=0>
DIAG <2A4D3263 34=7080 35=6720>
DIAG <2A4D3263 40=1>
DIAG <2A4D3263 41=80 42=0 43=0 44=1>
DIAG <2A4D3263 45=800>
DIAG <2A4D3263 50=2 51=2>
DIAG <2A4D3263 52=141131 53=D7D535>
DIAG <2A4D3263 54=0 55=0>
DIAG <2A4D3263 56=D 57=0 58=290 59=12788>
DIAG <2A4D3263 60=20>
DIAG <2A4D3263 FF="3COM-USROBOTICS">

OK


thanks for any help

shano64
Tl Posts:
16

Posted - 5/12/2000 11:20:54 PM  Show Profile  Email Poster  Edit Message
I had a line test about 6 months ago after we had a storm and our phone lines went down. Since then I personally have not noticed any line noise. I have a line that goes straight from the jack on the PC to a hole in my floor and wired to the posts in the basement. I also always make sure that I have no other type of wiring around the line, and my PC is on a ciruit breaker of it's own ( I had a air cleaner once on the same eletrical circuit that made noise on the line).

I also just got address.com free ISP and went from 21000 up to 26400. My goal is to get back that 33000 lightning speed (LOL) I had before. And another thing, cable is not in my area yet.


Edited by - shano64 on 5/13/00 3:32:57 AM

Daveman_750
Tl Posts:
86

USA
Posted - 5/13/2000 6:43:25 PM  Show Profile  Email Poster  Edit Message  Daveman_750s Homepage
GET YOUR LINE CHECKED. .1 SNR IS NOT GOOD!!! It probably isn't REALLY .1 but its probably pretty bad. See if it shows up on voice calls and if so call your telco repair dept. They'll have to fix it if it noticeably affects voice calls because they provide VOICE GRADE LINES.
v.Richard
Tl Posts:
6222

USA
Posted - 5/14/2000 12:27:28 PM  Show Profile  Email Poster  Edit Message  v.Richards Homepage
Shano - Your y11 would indicate your line is not 56k-compatible (3750=52); probably best to use init string to disable 56k (s32=98);
Ask your telco if they can give you a better line (integrated SLC instead of non?)

MARY - Line s/b OK for 56k, but you didn't get 56k, and there TWENTYFIVE retrains Granted!!! Probably at the ISP or route to the ISP you are calling. Try other #s. Link

Aloha,
Richard

shano64
Tl Posts:
16

Posted - 5/15/2000 9:30:02 PM  Show Profile  Email Poster  Edit Message
That will be the first thing I do tomorrow. My telco hates me as it is...heehee. I tried the S32=98 string and went up to 28800 now.

Very much appreciate all your help!
Shannon
Edited by - shano64 on 5/15/00 9:41:21 PM

Mary
Tl Posts:
6

USA
Posted - 5/16/2000 4:03:20 AM  Show Profile  Email Poster  Edit Message
Thanks Richard, I've looked at the links page and there are no numbers I can use, I did look at modem check again and the retraints were 0 this time, this stuff has me all confused, but I'll keep working on it, thanks again for your help, Mary

thanks for any help
Edited by - Mary on 5/16/00 4:04:46 AM

shano64
Tl Posts:
16

Posted - 5/16/2000 7:30:55 AM  Show Profile  Email Poster  Edit Message
When I try the init string S32=98 to disable 56k, it works when I use it for address.com ISP, but it will not work for my primary ISP (ameritech.net) I have been using. It will dial-up, but "hangs" at handshaking.
Daveman_750
Tl Posts:
86

USA
Posted - 5/16/2000 7:44:40 AM  Show Profile  Email Poster  Edit Message  Daveman_750s Homepage
For Shan064, your line is probably no good. At a symbol rate (bandwidth) of 2400 the frequency response on your line sucks. But the good news is that your telco is required to provide 2700 Hz of bandwidth, from 300 to 3000 Hz. Complain to them that they are not providing the amount of bandwidth they legally have to. Mary, with the highest V.34 symbol rate (bandwidth) possible, 3429, your line must be terribly noisy. Complain about noise on voice calls if you can notice any. USE THE SAME JACK THAT YOUR MODEM IS PLUGGED INTO TO TEST YOUR LINE OUT FOR VOICE CALLS.
shano64
Tl Posts:
16

Posted - 5/16/2000 10:15:02 AM  Show Profile  Email Poster  Edit Message
I'm going to be calling my Telco here in a few, but for the heck of it, here is another "modemcheck" readout from today.

Modulation               V.34
Carrier Freq (Hz) 1829/1829
Symbol Rate 3200/3200
Trellis Code 64S-4D/16S-4D
Nonlinear Encoding ON/OFF
Precoding ON/OFF
Shaping OFF/OFF
Preemphasis (-dB) 4/8
Recv/Xmit Level (-dBm) 31/15
SNR (dB) 11
Near Echo Loss (dB) 5
Far Echo Loss (dB) 230
Roundtrip Delay (msec) 2

B0 E0 F1 L1 M1 Q0 V1 X4 Y0
BAUD=9600 PARITY=N WORDLEN=8
DIAL=HUNT ON HOOK CID=0

&A3 &C1 &D2 &G0 &H1 &I0 &K1
&M4 &N0 &P0 &R2 &S0 &T5 &U0 &Y1

S00=000 S01=000 S02=043 S03=013 S04=010 S05=008 S06=002
S07=060 S08=002 S09=006 S10=007 S11=070 S12=050 S13=000
S15=000 S16=000 S18=000 S19=000 S21=010 S22=017 S23=019
S25=020 S27=000 S28=008 S29=020 S30=000 S31=128 S32=098
S33=000 S34=000 S35=000 S36=014 S38=000 S41=000

Chars sent 1175 Chars Received 726
Chars lost 0
Octets sent 5903 Octets Received 45938
Blocks sent 384 Blocks Received 445
Blocks resent 0

Retrains Requested 0 Retrains Granted 0
REJs Received 0 Blers 0
Link Timeouts 0 Link Naks 0

Data Compression V42BIS 2048/32
Equalization Long
Fallback Enabled
Protocol LAPM
Speed 28800/26400
Last Call 00:03:01


Product ID:
Options V32bis,V.34+,x2,V.90,V.80
Fax Options Class 1/Class 2.0
Line Options Distinctive Ring,Caller ID
DSP Freq 46.0Mhz
DSP Ram 32k

VXD date 06/30/98
VXD rev 1.00.011

Edited by - shano64 on 5/16/00 10:20:21 AM

Daveman_750
Tl Posts:
86

USA
Posted - 5/16/2000 11:08:31 AM  Show Profile  Email Poster  Edit Message  Daveman_750s Homepage
If you get a symbol rate of 3200 the majority of the time calling your telco isn't going to work because then they are providing the bandwidth they are required to provide plus 500 Hz.
Daveman_750
Tl Posts:
86

USA
Posted - 5/16/2000 11:09:58 AM  Show Profile  Email Poster  Edit Message  Daveman_750s Homepage
Sorry, I didn't notice the SNR of 11. If thats the case you can probably complain about ordinary line noise on voice calls.
shano64
Tl Posts:
16

Posted - 5/16/2000 2:42:14 PM  Show Profile  Email Poster  Edit Message
I really, really do appreciate all of your help Daveman, but if you can explain to me what SNR is and what is a good number. I know what db is, so 11 db would mean? I'm picking up 11 decibals of crap? And that a lower number is better?

The telco did a test on the phone and said it was good, but I told them that we had a storm a week ago (and we did) and since then, my modem and fax has not been the same, and that I run my business at home (Muhahaha). So I have a 3:00 appointment with them here Thursday.

Also, do you have a website that explains more?
Edited by - shano64 on 5/16/00 2:44:08 PM

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