flexfax: T.30 T2 timeout, expected page not received

[Chris Nicol <nicolc@econ.uregina.ca>]

Hi. I am running hylafax v4 pl1 on a Linux machine with kernel version
2.0.29. The modem is a USR Sportster 28,800. This setup works most of
the time, and can send and receive faxes. However, on occasion, a
receive fax fails for no clear reason. One case today generated the
folloi=wing log:

An attempt to receive facsimile on cua0 failed because:

    T.30 T2 timeout, expected page not received

    ---- Transcript of session follows ----

May 25 15:24:49.23: [   99]: SESSION BEGIN 00000402 13063470000
May 25 15:24:49.23: [   99]: <-- [22:AT+FCLASS=1&H1&I0&R2A\r]
May 25 15:24:55.14: [   99]: --> [7:CONNECT]
May 25 15:24:55.14: [   99]: ANSWER: FAX CONNECTION
May 25 15:24:55.14: [   99]: RECV FAX: begin
May 25 15:24:55.16: [   99]: --> [7:CONNECT]
May 25 15:24:57.12: [   99]: --> [2:OK]
May 25 15:24:57.12: [   99]: <-- [9:AT+FRH=3\r]
May 25 15:24:58.06: [   99]: --> [7:CONNECT]
May 25 15:24:59.50: [   99]: --> [2:OK]
May 25 15:24:59.50: [   99]: REMOTE TSI "452 2587"
May 25 15:24:59.50: [   99]: <-- [9:AT+FRH=3\r]
May 25 15:24:59.51: [   99]: --> [7:CONNECT]
May 25 15:24:59.82: [   99]: --> [2:OK]
May 25 15:24:59.82: [   99]: REMOTE wants 9600 bit/s
May 25 15:24:59.82: [   99]: REMOTE wants page width 1728 pixels in
215 mm
May 25 15:24:59.82: [   99]: REMOTE wants unlimited page length
May 25 15:24:59.82: [   99]: REMOTE wants 7.7 line/mm
May 25 15:24:59.82: [   99]: REMOTE wants 2-D MR
May 25 15:24:59.82: [   99]: RECV training at v.29 9600 bit/s
May 25 15:24:59.82: [   99]: <-- [10:AT+FRM=96\r]
May 25 15:25:00.41: [   99]: --> [7:CONNECT]
May 25 15:25:01.99: [   99]: RECV: TCF 1893 bytes, 4% non-zero, 1807
zero-run
May 25 15:25:01.99: [   99]: --> [10:NO CARRIER]
May 25 15:25:01.99: [   99]: DELAY 75 ms
May 25 15:25:02.08: [   99]: <-- [9:AT+FTH=3\r]
May 25 15:25:02.31: [   99]: --> [7:CONNECT]
May 25 15:25:03.49: [   99]: --> [2:OK]
May 25 15:25:03.49: [   99]: TRAINING succeeded
May 25 15:25:03.49: [   99]: <-- [10:AT+FRM=96\r]
May 25 15:25:06.51: [   99]: --> [7:CONNECT]
May 25 15:25:06.51: [   99]: RECV: begin page
May 25 15:25:07.95: [   99]: RECV: 0 total lines, 0 bad lines, 0 consecutive bad
 lines
May 25 15:25:08.06: [   99]: RECV: end page
May 25 15:25:08.06: [   99]: --> [10:NO CARRIER]
May 25 15:25:08.06: [   99]: <-- [9:AT+FRH=3\r]
May 25 15:25:08.82: [   99]: --> [10:NO CARRIER]
May 25 15:25:08.82: [   99]: MODEM No carrier
May 25 15:25:08.82: [   99]: <-- [9:AT+FRH=3\r]
May 25 15:25:08.83: [   99]: --> [10:NO CARRIER]
May 25 15:25:08.83: [   99]: MODEM No carrier
May 25 15:25:08.83: [   99]: <-- [9:AT+FRH=3\r]
May 25 15:25:08.84: [   99]: --> [10:NO CARRIER]
May 25 15:25:08.84: [   99]: MODEM No carrier
May 25 15:25:08.84: [   99]: <-- [9:AT+FRH=3\r]

.
.
.
about 23,000 more lines like the above, then:
.
.
.
May 25 15:26:26.56: [   99]: --> [10:NO CARRIER]
May 25 15:26:26.56: [   99]: MODEM No carrier
May 25 15:26:26.56: [   99]: <-- [9:AT+FRH=3\r]
May 25 15:26:33.56: [   99]: --> [0:]
May 25 15:26:33.56: [   99]: MODEM <Empty line>
May 25 15:26:33.76: [   99]: MODEM <Timeout>
May 25 15:26:33.76: [   99]: RECV FAX (00000402): recvq/fax00016.tif from 452 25
87, route to <unspecified>, 0 pages in 1:38
May 25 15:26:33.77: [   99]: RECV FAX: T.30 T2 timeout, expected page not received
May 25 15:26:33.77: [   99]: <-- [9:AT+FTH=3\r]
May 25 15:26:36.31: [   99]: --> [0:]
May 25 15:26:36.32: [   99]: RECV FAX (00000402): session with 452 2587 terminat
ed abnormally: T.30 T2 timeout, expected page not received
May 25 15:26:36.32: [   99]: RECV FAX: bin/faxrcvd
"recvq/fax00016.tif" "cua0" "
00000402" "T.30 T2 timeout, expected page not received"

I have no clue as to what is going on here. Maybe no-one else does
either, but I would appreciate any constructive feedback. Thanks in
advance. Plese e-mail me directly.

Chris Nicol.


_____________________________________________________________________
Dr. Chris Nicol, Professor and Head,     Phone:  (306) 585-4182
Department of Economics,                 FAX:    (306) 585-4815
and Associate Director, Centre for       E-mail: nicolc@uregina.ca
Advanced Systems, University of Regina   http://athena.cas.uregina.ca
Saskatchewan, S4S 0A2, CANADA.