flexfax: Receiving problems on USR Sportster 56000s...

[Satanus Imperator <diverter@paypc.com>]

Latest Beta 4.1, on linux 2.2.11, happily configured and running smoothly,
configured primarily for receive operations.  I have the modem in class2.0,
and setup with the various "workarounds" advocated in the config files (and
various USR Sportster Hylafax FAQ web sites I've found).  I have adaptive
answer off.  And I made my answer command "AT +FCLASS=2.0; A" to force FAX
modes on answer.

I notice that some fax machines cannot seem to send me faxes [one or two
Toshiba models in particular, tho I can't track down what the age or model#s
are]....  I get the following in the logs:


Mar 08 15:03:46.48: [  112]: RECV FAX: begin
Mar 08 15:03:53.69: [  112]: --> [4:+FCO]
Mar 08 15:04:00.54: [  112]: --> [4:+FCO]
Mar 08 15:04:09.72: [  112]: --> [4:+FCO]
Mar 08 15:04:34.33: [  112]: --> [7:+FHS:74]
Mar 08 15:04:34.33: [  112]: REMOTE HANGUP: T.30 T1 timeout after EOM
received (
code 74)
Mar 08 15:04:34.46: [  112]: --> [2:OK]
Mar 08 15:04:34.46: [  112]: RECV FAX: T.30 T1 timeout after EOM received
Mar 08 15:04:34.46: [  112]: RECV FAX: end
Mar 08 15:04:34.46: [  112]: SESSION END

==> c00000651 <==
Aug 25 11:44:23.02: [32662]: --> [2:OK]
Aug 25 11:44:23.02: [32662]: <-- [7:AT+FDR\r]
Aug 25 11:44:31.57: [32662]: --> [7:+FHS:90]
Aug 25 11:44:31.57: [32662]: REMOTE HANGUP: Unspecified Phase C error,
including
 too much delay between TCF and +FDR command (code 90)
Aug 25 11:44:31.57: [32662]: RECV FAX (00000651): recvq/fax00567.tif from 65
744
2678, route to <unspecified>, 0 pages in 0:23
Aug 25 11:44:31.57: [32662]: RECV FAX: Unspecified Phase C error, including
too
much delay between TCF and +FDR command
Aug 25 11:44:31.57: [32662]: RECV FAX (00000651): session with 65 7442678
termin
ated abnormally: Unspecified Phase C error, including too much delay between
TCF
 and +FDR command
Aug 25 11:44:31.57: [32662]: RECV FAX: bin/faxrcvd "recvq/fax00567.tif"
"modem"
"00000651" "Unspecified Phase C error, including too much delay between TCF
and
+FDR command"
Aug 25 11:44:31.79: [32662]: RECV FAX: end
Aug 25 11:44:31.79: [32662]: SESSION END

I don't suppose anyone out there has any recommendations as to:

1) Optimal settings of the USR Sportster 56000 [flash model, external] to
have the best chance of receiving the most faxes from a variety of machines?

2) Is Class 1, 2, or 2.0 best for receiving faxes?  My server is fairly
lightly loaded, and would not have latency issues responding to serial i/o
traffic.  [I am to understand that Class 1 operations require more
interactivity on the part of the server].

=Rob=