In a message dated 09-15-96, Bill Grimsley said to Michael Raiteri:

MR> Telstra are certain that it is not my phone lines (see 
MR> other message "noisy 
MR> lines") and that it must be my equipment.  This takes me back to my 
MR> original statement some weeks ago that I reckon my modem is a lemon.

MR> SNR              (dB)       32

MR> SNR              (dB)       31

BG>You have S/N ratios as low as 31db and Telstra still reckon your line is OK? 
BG> They obviously have no idea what they're talking about.  
BG>Unless you're seeing 38db or better, you won't be getting 
BG>any 33600 connects, regardless of the modem in use.  As I 
BG>said before, your lines are definitely dodgy.  QED.

As I mentioned previously the SNR ratios vary.  This is the result of the last
call to David's BBS (to pick up this mail actually :) )

ati6i11
Texas Instruments RK 33600 Fax Link Diagnostics...

Chars sent                 3005      Chars Received           266342
Chars lost                    0
Octets sent                3005      Octets Received          271977
Blocks sent                 169      Blocks Received            3261
Blocks resent                 0

Retrains Requested            0      Retrains Granted              0
Line Reversals                0      Blers                         5
Link Timeouts                 0      Link Naks                     0

Data Compression       NONE
Equalization           Long
Fallback               Disabled
Protocol               LAPM
Speed                  31200/26400 
Last Call              00:09:54

Disconnect Reason is DISC Received

USRobotics Sportster 33600 V.34+ Fax 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                   ON/ON
Shaping                     OFF/ON
Preemphasis      (-dB)      6/4
Recv/Xmit Level  (-dBm)     26/10
SNR              (dB)       38
Near Echo Loss   (dB)       26
Far Echo Loss    (dB)       54
Round Trip Delay (msec)     4

OK

As you can see the NSR is 38 yet the best I could do was 26400. Transfer rates
do vary was well, I got 3319 (David's figures) from the first lot of mail and
2779 for the second. I constantly get this pausing even though I have &k0. Its
annoying in the extreme.

Still haven't been able to get through to Dynalink lately, their phones are
constantly engaged, so it's no words of wisdon from them :^

Cheers
Mike
Internet: mraiteri{at}dyson.brisnet.org.au
___
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