| TIP: Click on subject to list as thread! | ANSI |
| echo: | |
|---|---|
| to: | |
| from: | |
| date: | |
| subject: | Line Probe standard |
BG> Hi Rod, BG> Russell posted these stats in USR_Modems today, and I've forwarded them BG> to you BG> just in case you missed them. The frequency response plot is BG> particularly BG> interesting, and assuming as near as dammit to 0dB loss for the link, BG> that BG> almost dead flat -10dBm Tx level is actually 5dB less than the modem's BG> reported BG> Tx level, so I presume that it had automatically adjusted itself BG> accordingly BG> (the curve is plotted right at the beginning of the connect, as you BG> know). BG> I wondered about that reported retrain for a while too. Thought it was a BG> bit BG> odd on such a great link, then the penny dropped. I bet that Russ BG> returned on BG> line with ATO2 (which forces a transparent retrain). No, I Actually Forced a retrain from both machines, so that I could come up with details from each side, to see if they were different. They are different, but ever so slight. I have now set S56=2 S39=9 to try and lock the Tx level S39=9 is supposed to (in theory) lock Tx to -9db, It does improve things, but won't go down to 9. Below are the dumps for these tests. Compare them with the Default dump for me, then I will post them to POE, as he is the one that is using these registers and really needs some Stats to guide him when he complains to telstra BG> 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴 BG> The Stats below come from connecting two Identical USR Courier BG> V.Everything Internal modems (using the 1st Nov SDL) via a BG> 2 metre phone cable and transferring a 1.4meg file across the link. BG> This is the PERFECT LINK and the stats can be used as a standard BG> When comparing real PSTN line stats. BG> Connection Summary: BG> 旼컴컴컴컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴� BG> � USRSTATS Version 4.06B� 03-30-96 12:29 � Caller 0 � BG> 쳐컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴쩡컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴� BG> � Elapsed Time 00:29:12 � Modulation V.34+ � BG> � Blocks Received 6676 � Speed 33600/33600 � BG> � Blers 0 � Symbol Rate 3429/3429 � BG> � Blocks sent 6136 � Carrier Freq (Hz) 1959/1959 � BG> � Link Naks 0 � Trellis Code 64S-4D/64S-4D � BG> � Blocks resent 0 � Nonlinear Encoding ON/ON � BG> � Link Timeouts 0 � Precoding OFF/OFF � BG> � Chars sent 1482240 � Shaping OFF/OFF � BG> � Octets sent 1483389 � Preemphasis Index 0/0 � BG> � Chars lost 0 � Rx/Tx Level (-dB) 14.1/15.2 � BG> � Chars Received 1616896 � Roundtrip Delay mS 0 � BG> � Octets Received 1617180 � Retrains Requested 1 � BG> � Protocol LAPM SREJ � Retrains Granted 0 � BG> � Block Size 244 � Fallback Enabled � BG> � Window Size 15 � HST Line Reversals 0 � BG> � Compression V42BIS � HST Equalization Long � BG> � Dictionary Size 2048 � SV: 11/01/95 DSP: 10/16/95 � BG> � String Length 32 � Reason: Online � BG> 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� BG> Channel Probe: BG> 旼컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� BG> � -10 � � � � � � � � � � � � � � � � � � � � � � � � � � � 0 � BG> � -12 � � � � � � � � � � � � � � � � � � � � � � � � � � � 2 � BG> � -14 � � � � � � � � � � � � � � � � � � � � � � � � � � � 4 � BG> � -16 � � � � � � � � � � � � � � � � � � � � � � � � � � � 6 � BG> 쿗evel읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�Atten� BG> � 0 0 0 0 0 0 1 1 1 1 1 1 1 2 2 2 2 2 2 3 3 3 3 3 3 � BG> � 1 3 4 6 7 9 0 2 3 5 6 8 9 1 2 4 5 7 8 0 1 3 4 6 7 � BG> � 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 � BG> � 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 � BG> 읕컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� BG> Terminate scrollback buffer saved 30/Mar/1996 12:26p BG> OK BG> ati7i6i11y11 BG> USRobotics Courier V.Everything Configuration Profile... BG> Product type US/Canada Internal BG> Options HST,V32bis,Terbo,VFC,V34+ BG> Fax Options Class 1/Class 2.0 BG> Clock Freq 20.16Mhz BG> Eprom 256k BG> Ram 32k BG> Supervisor date 11/01/95 BG> DSP date 10/16/95 BG> Supervisor rev 6.3.1 BG> DSP rev 1.2.6 BG> USRobotics Courier V.Everything Link Diagnostics... BG> Chars sent 1482240 Chars Received 1616896 BG> Chars lost 0 BG> Octets sent 1483389 Octets Received 1617180 BG> Blocks sent 6136 Blocks Received 6676 BG> Blocks resent 0 BG> Retrains Requested 1 Retrains Granted 0 BG> Line Reversals 0 Blers 0 BG> Link Timeouts 0 Link Naks 0 BG> Data Compression V42BIS 2048/32 BG> Equalization Long BG> Fallback Enabled BG> Protocol LAPM SREJ 244/15 BG> Speed 33600/33600 BG> Current Call 00:29:12 BG> Online BG> USRobotics Courier V.Everything Link Diagnostics... BG> Modulation V.34+ BG> Carrier Freq ( Hz ) 1959/1959 BG> Symbol Rate 3429/3429 BG> Trellis Code 64S-4D/64S-4D BG> Nonlinear Encoding ON/ON BG> Precoding OFF/OFF BG> Shaping OFF/OFF BG> Preemphasis (-dB ) 0/0 BG> Recv/Xmit Level (-dBm) 14.1/15.2 BG> SNR ( dB ) 44.2 BG> Near Echo Loss ( dB ) 10.9 BG> Far Echo Loss ( dB ) 44.6 BG> Roundtrip Delay (msec) 0 BG> Freq Level BG> 150 15 BG> 300 11 BG> 450 11 BG> 600 10 BG> 750 10 BG> 900 10 BG> 1050 10 BG> 1200 10 BG> 1350 10 BG> 1500 10 BG> 1650 10 BG> 1800 10 BG> 1950 10 BG> 2100 10 BG> 2250 10 BG> 2400 10 BG> 2550 10 BG> 2700 10 BG> 2850 11 BG> 3000 11 BG> 3150 11 BG> 3300 11 BG> 3450 11 BG> 3600 11 BG> 3750 11 BG> OK BG> ato1 BG> CONNECT 33600/ARQ/V34/LAPM/V42BIS Russell --- Terminate 3.00/Pro* Origin: Data Deleters Inc. (3:640/305.55) SEEN-BY: 640/305 450 711/934 @PATH: 640/305 711/934 |
|
| SOURCE: echomail via fidonet.ozzmosis.com | |
Email questions or comments to sysop@ipingthereforeiam.com
All parts of this website painstakingly hand-crafted in the U.S.A.!
IPTIA BBS/MUD/Terminal/Game Server List, © 2025 IPTIA Consulting™.