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PsychoSy Tl Posts: 2 USA	Posted - 10/22/2000 11:22:01 PM I've always had problems connecting at greater than 28.8 for years. For a while, I had to disable V.90 alltogether!! Recently, with the resurgence of an upper-class trailer home park and church being built around my country home, I thought that perhaps Ameritech improved some of their gear out here. I purchase the 3COM 56K Faxmodem Pro Voice USB which I run on a COM port instead of USB from a friend and then let it connect. It connects at 45,333! Whoo-hoo!! And hour later...click modem unable to retrain!! Since my ISP account was about to lapse and I wanted a change of pace, I ordered service from Earthlink and I'm using their v.90/x2 line to connect (my former ISP used V.90/KFlex which I figured had some anomlies that my 3Com modem didn't like). Ever since my switch to Earthlink, I get a consistant 42,666 connection rate with an occassional 44,000. Throughput is pretty decent as well for the most part but usually after an hour or 2, my connection will downshift to around 38,000 and sometimes down to an ugly 26,400. But I'm still complaining :P Why? In theory, I shouldn't be getting a V.90 connection and I desperately want to keep it my current lucky streak which I'm sure will puke out soon. Take a look at this log... ati6 U.S. Robotics 56K Voice Pro EXT Link Diagnostics... Chars sent 147273 Chars Received 854538 Chars lost 0 Octets sent 117336 Octets Received 800074 Blocks sent 3152 Blocks Received 7134 Blocks resent 0 Retrains Requested 0 Retrains Granted 0 Line Reversals 0 Blers 0 Link Timeouts 1 Link Naks 0 Data Compression V42BIS 2048/32 Equalization Long Fallback Enabled Protocol LAPM/SREJ Speed 45333/28800 V.90 Peak Speed 45333 Last Call 00:26:06 Disconnect Reason is DTR dropped OK ati11 U.S. Robotics 56K Voice Pro 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) 10/4 Recv/Xmit Level (-dBm) 25/12 Near Echo Loss (dB) 8 Far Echo Loss (dB) 0 Carrier Offset (Hz) NONE Round Trip Delay (msec) 7 Timing Offset (ppm) -1585 SNR (dB) 45.4 Speed Shifts Up/Down/Null 1/0/1 Status : uu,5,12N,12.2,-15,1Y,0,44.6,17.8 OK aty11 Freq Level (dB) 150 22 300 19 450 19 600 19 750 19 900 19 1050 19 1200 19 1350 20 1500 20 1650 20 1800 20 1950 21 2100 21 2250 22 2400 22 2550 23 2700 23 2850 24 3000 25 3150 27 3300 31 3450 38 3600 49 3750 63 The above call was only an half-hour but it was a smoking half-hour on a phone line that obviously has 2-3 A/D Conversions! And I'm positive I'm on a pair-gain and/or a non-integrated SLC. Here's the next log...this is for a connection of over an hour that started at 42,666 and declined steadily bottoming out at 26,400... U.S. Robotics 56K Voice Pro EXT Link Diagnostics... Chars sent 665134 Chars Received 5421347 Chars lost 0 Octets sent 351765 Octets Received 4163291 Blocks sent 15530 Blocks Received 36265 Blocks resent 59 Retrains Requested 0 Retrains Granted 1 Line Reversals 0 Blers 65 Link Timeouts 12 Link Naks 1 Data Compression V42BIS 2048/32 Equalization Long Fallback Enabled Protocol LAPM/SREJ Speed 26400/28800 Last Call 02:13:48 Disconnect Reason is DTR dropped OK ati11 U.S. Robotics 56K Voice Pro EXT Link Diagnostics... Modulation V.34 Carrier Freq (Hz) 1829/1920 Symbol Rate 3200/3200 Trellis Code 64S-4D/64S-4D Nonlinear Encoding ON/ON Precoding OFF/ON Shaping ON/ON Preemphasis (-dB) 8/4 Recv/Xmit Level (-dBm) 23/9 Near Echo Loss (dB) 27 Far Echo Loss (dB) 58 Carrier Offset (Hz) -1240 Round Trip Delay (msec) 8 Timing Offset (ppm) -1520 SNR (dB) 36 Speed Shifts Up/Down/Null 3/3/1 Status : OK aty11 Freq Level (dB) 150 22 300 19 450 19 600 19 750 19 900 19 1050 19 1200 19 1350 20 1500 20 1650 20 1800 20 1950 21 2100 21 2250 22 2400 22 2550 23 2700 23 2850 24 3000 25 3150 27 3300 31 3450 39 3600 49 3750 63 Now, today has been full of 38,000 connection rates and I swapped cables that run to the modem to the phone jack (my new cable is 25ft while the old one is about 12ft. long). It's driving me nuts!! My desk is only 7-10 feet from the Network Interface on the side of the house (heh walk out my front door and look over your right shoulder and there it is!) It's wired for 2 lines, one being my parents line and the one being mine. Strangely enough, my Mom's line sounds louder and somewhat cleaner than mine which sounds filtered and has less volume. Neither of these lines have a history of connect rates higher than 28.8 until my recent findings on my line over the past month. Someone on the newsgroups told me that I should talk with one of Ameritech's techs and ask them to "clear the half-taps" to see if that improves anything. What's my chances of a tech honoring this request? BTW, one time I got so sick of Ameritech telling me that canned response of "We're only obligated by FCC regulations to provide a 9600 connection rate", that I send a E-mail to the White House thinking that Slick Willy is the only person the FCC has to answer to. A month later, a gentleman from the FCC by the name of Douglas Cooper calls me and we discuss my letter for over an hour and he told me that just before calling me, he was in a meeting and discussed my letter with those in attendance (the letter included the Ameritech canned response) and Mr. Cooper said that those at this meeting were unaware and have never recalled invoking a "9600 baud-rate" regulation and their only concern was anything higher than 53Kbps. Basically, Ameritech and other telcos are lying about this "9600-baud rate" limitation. Rotton thieves!! --Sy-- "Take Not Thy Thunder From Us...Take Away Our Pride." --Iron Maiden--
n2775247 Tl Posts: 24 Australia	Posted - 10/25/2000 8:39:22 AM DTR drop out may mean its dropping out at your end. What speed is your port set at, try it at 115200. The masses of men live a life of quiet desperation. Henry David Thoreau
PsychoSy Tl Posts: 2 USA	Posted - 10/26/2000 12:47:21 AM My port rate's at 155200. I recently turned down my Rx buffer and the result has been better throughput and less retrains. In fact, I counted 2 retrains earlier that were visably noticable (I was on a Telnet BBS posting a message when my typing lagged for about 15 seconds and the other retrain during newsgroup surfing) and tested my throughput. The result was an estimated 44,000 on a 42,666 connection so apparently my USR modem actually will upshift (I've read somewhere that 56K modems rarely upshift).
v.Richard Tl Posts: 6222 USA	Posted - 10/28/2000 9:42:30 AM Yes, the y11 #s would indicate that you do not have a 56k-compatible line; The i11 status line indicates your call goes on a 6db pad (my guess: Earthlink's access # is a 'virtual' POP that is actually forwarded to another location where the server modems are: in most cases a 6db pad will yield better 56k connects than a [more common for local calls] 3db pad. The i11 status also shows RBS link and old [bad for 56k] codedc - 1Y. Ask telco: are you on a SLC or DLC system? Is it integrated? How far are you from the telco CO? Aloha, Richard

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