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echo: netcomms
to: Peter Collis
from: Paul Edwards
date: 1996-02-15 22:24:08
subject: M34F & USR Couriers

db> Interesting to hear you say that, as I'm currently trying to
db> find out why my M34F won't connect to a V.34+ USR Courier at
db> 28.8Kbps;  we can both connect to other systems at 28.8Kbps (or
db> higher in his case), but not *once* can I connect to him at
db> 28.8Kbps.

PC> I have a M11F and USR V.E Courier here the Courier connects to a
PC> 'M34F new datapump' at 26400 then upshifts to 28800 straight away this
PC> was with the latest Austel USR code installed 18/07/95 i think, Iv'e
PC> since went back one revision and my connects have dropped from
PC> 26400-28800 to 21600-24000 although my Tx level has risen from -17dB
PC> to -11dB, As Couriers have a habit of connecting low and shifting up
PC> are you sure your not just seeing the inital lower connect before the
PC> train up.

PC> consistant with what i'm seeing here, Are you sure the Courier isn't
PC> shifting up after the connect.

Yes, he's sure.  I've never once seen it upshift on him...

# 14 Feb 12:13:57.53   CONNECT 24000/ARQ/V34/LAPM/V42BIS
: 14 Feb 12:14:00.25   Sysop: david begley
# 14 Feb 12:14:27.63   USRobotics Courier V.32bis Dual Standard V.34+ Fax
Link Diagnostics...
# 14 Feb 12:14:28.16   Modulation               V.34
# 14 Feb 12:14:28.16   Carrier Freq (Hz)        1829/1829
# 14 Feb 12:14:28.19   Symbol Rate              3200/3200
# 14 Feb 12:14:28.22   Trellis Code             64S-4D/16S-4D
# 14 Feb 12:14:28.25   Nonlinear Encoding       ON/ON
# 14 Feb 12:14:28.25   Precoding                ON/ON
# 14 Feb 12:14:28.28   Shaping                  OFF/ON
# 14 Feb 12:14:28.28   Preemphasis (-dB)        4/6
# 14 Feb 12:14:28.31   Recv/Xmit Level (-dB)    35/12
# 14 Feb 12:14:28.35   Roundtrip Delay (msec)   4
# 14 Feb 12:14:28.38   USRobotics Courier V.32bis Dual Standard V.34+ Fax
Link Diagnostics...
# 14 Feb 12:14:28.41   Chars sent                62245      Chars Received 
           2085
# 14 Feb 12:14:28.44   Chars lost                    0
# 14 Feb 12:14:28.47   Octets sent               62119      Octets Received
           2109
# 14 Feb 12:14:28.50   Blocks sent                 364      Blocks Received
             37
# 14 Feb 12:14:28.50   Blocks resent                 0
# 14 Feb 12:14:28.53   Retrains Requested            0      Retrains
Granted              0
# 14 Feb 12:14:28.56   Line Reversals                0      Blers          
              0
# 14 Feb 12:14:28.63   Link Timeouts                 0      Link Naks      
              0
# 14 Feb 12:14:28.63   Data Compression       V42BIS 2048/32
# 14 Feb 12:14:28.66   Equalization           Long
# 14 Feb 12:14:28.66   Fallback               Enabled
# 14 Feb 12:14:28.69   Protocol               LAPM 244/6
# 14 Feb 12:14:28.72   Speed                  24000/24000
# 14 Feb 12:14:28.72   Last Call              00:00:29
# 14 Feb 12:14:28.75   Disconnect Reason is DTR dropped
# 14 Feb 12:14:28.75   OK
@EOT:

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* Origin: X (3:711/934.9)

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