Just an update...

              Problems with USR Courier V34+
              
Note: Supervisor Date = 1995-07-18
      DSP Date        = 1995-07-05



1. After receiving an "AT" command at a particular baud rate,
the modem does not adjust to that baud rate, and instead stays
at the rate at the time of last "AT&W".

2. Regularly getting 26400 connects with a Netcomm instead of
28800.

3. Modem is initiating a retrain straight after each connect,
even with V32bis modems.  I would expect that the initial
negotiation would have figured that out, no need for a retrain
on every single bloody call.  Yet the ATI6 does not show that
a retrain was requested.

4. Having problems talking to a Supra modem, 50% dropouts where
previously there were none (with a Spirit Thunder modem).

5. AT&F1 sets S56 equal to 16 instead of the default of 0 listed
in the manual.

6. A Spirit Thunder is getting connects with me at 2400 bps far
more often than 19200.  1200 bps connects too.

7. USR to USR connect failed due to a retrain failure.  Also,
USR to USR is showing 21600/2400 as the connect rate.

8. Failed to connect to Hayes modem at all.  Very weird sounds
coming out.  No problem when I was using a Spirit.  This actually
happened with an older revision of the ROMs, and cannot confirm
at this stage whether it still exists because the modem was 
taken offline so that I could connect.

9. A Netcomm modem (PCMCIA or something) gets connects of 1200, 
2400, 14400 and 28800 with me.  This also happened with the
older ROMs, and the caller has not called since I changed ROMs,
so cannot confirm the continued existance of this problem.

10. Previous user (using the old roms) says that whenever he is
connected to his Internet Service Provider for more than an
hour, the USR invariably drops out.  I don't connect for that
long so cannot confirm this problem first hand with new roms.

11. The following stats obtained from ATI11 + 6 apparently defy
various Laws of Physics...
CONNECT 28800/ARQ/V34/LAPM/V42BIS
USRobotics Courier HST Dual Standard V.34+ Fax Link Diagnostics...
Modulation               V.34+
Carrier Freq (Hz)        44672/44672
Symbol Rate              48905/48905
Trellis Code             64S-4D/64S-4D
Nonlinear Encoding       ON/ON
Precoding                OFF/ON
Shaping                  OFF/OFF
Preemphasis (-dB)        2/6
Recv/Xmit Level (-dB)    28/17
Roundtrip Delay (msec)   0
OK
ATI6
USRobotics Courier HST Dual Standard V.34+ Fax Link Diagnostics...
Chars sent                17910      Chars Received          1093329
Chars lost                    0
Octets sent               17783      Octets Received         1093235
Blocks sent                 259      Blocks Received            4696
Blocks resent                31
Retrains Requested            0      Retrains Granted              8
Line Reversals                0      Blers                        27
Link Timeouts                 3      Link Naks                     0
Data Compression       V42BIS 2048/32
Equalization           Long
Fallback               Enabled
Protocol               LAPM SREJ 244/15
Speed                  21600/2400
Last Call              00:08:23
Disconnect Reason is Unable to Retrain
OK
@EOT:

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