system: You are Hayes Support, a caller on a 1990s BBS posting in the Hayes Modems message echo. Write like a real BBS user of the era — plain, direct, in your own voice, no modern polish.

user: You are replying to Arthur Marsh about "EXCESSIVE RETRAINS WI 01/".

They wrote:
AM>MSGID: 3:800/812@fidonet 822ba2bf
AM>On Mon 13 Oct at 15:41 Hayes Support (1:396/1) wrote to Arthur Marsh:
AM> HS> Keep in mind that it's not necessarily how 'clean' the lines
AM> HS> are, but the available bandwidth on the lines that can
AM> HS> affect the carriers. Although this probably won't help,
AM> HS> you can try S110=1.  This should tell the modem to
AM> HS> ignore rate renegotiation requests from the other
AM> HS> modem.
AM>Richard Miller of Telstra Service Engineering claims that a bug report was
AM>to Rockwell last December regarding retrains not being entirely successful
AM>re-tuning to line conditions, resulting in more frequent retrains of
AM>value. I have personally experienced over 300 retrains in a single session
AM>my Telebit Fastblazer 8840 to a Hayes Optima Business Modem 288 with 6.20
AM>firmware, and my Telebit stats for a similar connection to the same Hayes
AM>110 retrains, with a quite wide bandwidth available:
AM>at$a0$a1$a2$a3$a4$a5
AM>Telebit FastBlazer Modulation Parameters:
AM>Standard - V.34b
AM>                           RX/TX
AM>Symbol rate              3200/3200
AM>Carrier Freq.(Hz)        1920/1829
AM>Pre-emphasis index          0/ 0
AM>Trellis code               16/16
AM>Constellation shaping  Normal/Expand
AM>Non-linear encoding        On/On
AM>Precoding                 Off/On
AM>Xmit level reduction        0/ 1
AM>Telebit FastBlazer Line Parameters:
AM>SQ value                    5
AM>SNR (dB)                  +33
AM>RX level (dBm)            -23
AM>Frequency offset (Hz)     +0.0
AM>Phase jitter freq. (Hz)   +0.0
AM>Phase jitter level (deg)    0
AM>Near-end echo level (dBm) -13
AM>Far-end echo level (dBm)  -61
AM>Phase roll (Hz)           +0.0
AM>Round-trip delay (ms)       2
AM>V34 PHASE 2 LPS GAIN CURVE
AM> Hz.    steps of 1dB
AM> 150.......................*
AM> 300................................*
AM> 450................................*
AM> 600................................*
AM> 750................................*
AM> 900................................*
AM>1050.................................*
AM>1200.................................*
AM>1350.................................*
AM>1500................................*
AM>1650................................*
AM>1800.................................*
AM>1950.................................*
AM>2100.................................*
AM>2250................................*
AM>2400.................................*
AM>2550.................................*
AM>2700.................................*
AM>2850.................................*
AM>3000................................*
AM>3150................................*
AM>3300................................*
AM>3450.............................*
AM>3600.......................*
AM>3750...........*
AM>V34 PHASE 2 RX PARAMS
AM>4 1 13 0 1 0
AM>V34 PHASE 2 TX PARAMS
AM>4 0 12 0 -2 1
AM>V34 PHASE 4 RX PARAMS
AM> 13  11   0   1   0   0  1FFE
AM>V34 PHASE 4 TX PARAMS
AM> 11  11   0   1   1   1  1FFF
AM>  51 110  17  15
AM>     ^^^Retrains
AM>OK
AM>Could you please clarify if there is indeed a bug with the 33600 bps
AM>I have emailed similar information to dan@hayes.com.au and
AM>and have an open incident with Telebit on this problem.

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assistant: made
at
dubious
from
shows
Rockwells?
bclark@telebit.com
Arthur,
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