[hylafax-users] Failed to properly detect high-speed data carrier
sant...@vasia.com
I am trying to setup a fax server. Outgoing faxes are sent ok, but there
are problems when receiving incoming faxes.
There are some sites where the fax is received ok, but there are
particular sites when this problem occurs. This usually
happens when there are many pages being sent to the faxserver. I have
noticed however that the error message is always the same
: "Failed to properly detect high-speed data carrier"
I have tried changing the configuration of the modem from xonxoff
(software flowcontrol) to rtscts (hardware flow control) but
the problem still persists.
The system consists of the following :
Intel Pentium 120MHz CPU
USR Sportster 33600 FAX Modem v4.3.179
Slackware Linux 10.0
Hylafax-4.2.0
patched libtiff-3.6.1
I included part of the log on this post. I removed some parts as it is long.
=====================================================
Oct 19 16:35:23.22: [19275]: SESSION BEGIN 000001024 632620
Oct 19 16:35:23.22: [19275]: HylaFAX (tm) Version 4.2.0
Oct 19 16:35:23.22: [19275]: <-- [22:AT+FCLASS=1&H1&I0&R2A\r]
Oct 19 16:35:28.52: [19275]: --> [7:CONNECT]
Oct 19 16:35:28.52: [19275]: ANSWER: FAX CONNECTION DEVICE '/dev/ttyS0'
Oct 19 16:35:28.52: [19275]: RECV FAX: begin
Oct 19 16:35:28.53: [19275]: <-- data [32]
Oct 19 16:35:28.54: [19275]: <-- data [2]
Oct 19 16:35:28.58: [19275]: --> [7:CONNECT]
Oct 19 16:35:28.58: [19275]: <-- data [23]
Oct 19 16:35:28.58: [19275]: <-- data [2]
Oct 19 16:35:29.30: [19275]: --> [7:CONNECT]
Oct 19 16:35:29.30: [19275]: <-- data [10]
Oct 19 16:35:29.30: [19275]: <-- data [2]
Oct 19 16:35:31.48: [19275]: --> [2:OK]
Oct 19 16:35:31.49: [19275]: <-- [9:AT+FRH=3\r]
Oct 19 16:35:33.92: [19275]: --> [7:CONNECT]
Oct 19 16:35:35.51: [19275]: --> [2:OK]
:
:
:
:
Oct 19 16:36:23.31: [19275]: RECV received frame number 6
Oct 19 16:36:23.31: [19275]: RECV received RCP frame
Oct 19 16:36:23.50: [19275]: --> [10:NO CARRIER]
Oct 19 16:36:23.50: [19275]: <-- [9:AT+FRH=3\r]
Oct 19 16:36:23.88: [19275]: --> [7:CONNECT]
Oct 19 16:36:24.91: [19275]: --> [2:OK]
Oct 19 16:36:24.91: [19275]: RECV recv PPS (partial page signal)
Oct 19 16:36:24.91: [19275]: RECV recv MPS (more pages, same document)
Oct 19 16:36:24.91: [19275]: RECV received 7 frames of block 1 of page 4
Oct 19 16:36:24.91: [19275]: <-- [9:AT+FRS=7\r]
Oct 19 16:36:25.02: [19275]: --> [2:OK]
Oct 19 16:36:25.03: [19275]: <-- [9:AT+FTH=3\r]
Oct 19 16:36:28.02: [19275]: --> [0:]
Oct 19 16:36:28.02: [19275]: RECV send PPR (partial page request)
Oct 19 16:36:28.02: [19275]: <-- [10:AT+FRM=72\r]
Oct 19 16:36:28.27: [19275]: --> [9:AT+FRM=72]
Oct 19 16:36:28.27: [19275]: RECV keeping unconfirmed page
Oct 19 16:36:28.30: [19275]: RECV: 1792 bytes of data, 16 total lines
Oct 19 16:36:28.31: [19275]: RECV FAX (000001024): from 81454765271,
page 4 in 0:12, INF, 200 x 100 dpi, 2-D MMR, 7200 bit/s
Oct 19 16:36:28.36: [19275]: RECV FAX (000001024):
recvq/fax000000293.tif from 81454765271, route to <unspecified>, 4 pages
in 1:00
Oct 19 16:36:28.38: [19275]: RECV FAX: Failed to properly detect
high-speed data carrier.
Oct 19 16:36:28.38: [19275]: <-- [9:AT+FTH=3\r]
Oct 19 16:36:28.38: [19275]: --> [5:ERROR]
Oct 19 16:36:28.39: [19275]: RECV FAX (000001024): session with
81454765271 terminated abnormally: Failed to properly detect high-speed
data carrier.
Oct 19 16:36:28.39: [19275]: RECV FAX: bin/faxrcvd
"recvq/fax000000293.tif" "ttyS0" "000001024" "Failed to properly detect
high-speed data carrier." "" ""
Oct 19 16:36:28.40: [19275]: RECV FAX: end
Oct 19 16:36:28.40: [19275]: SESSION END
=======================================================
Has anyone encountered this problem before?
Is it a line problem?
Or does the modem have a problem?
Any help would be appreciated.
Thanks in advance.
Regards,
Jay Santillan
____________________ HylaFAX(tm) Users Mailing List _______________________
To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi
On UNIX: mail -s unsubscribe hylafax-us...@hylafax.org < /dev/null
*To learn about commercial HylaFAX(tm) support, mail sa...@ifax.com.*
Lee Howard
> Oct 19 16:36:23.31: [19275]: RECV received frame number 6
> Oct 19 16:36:23.31: [19275]: RECV received RCP frame
> Oct 19 16:36:23.50: [19275]: --> [10:NO CARRIER]
> Oct 19 16:36:23.50: [19275]: <-- [9:AT+FRH=3\r]
> Oct 19 16:36:23.88: [19275]: --> [7:CONNECT]
> Oct 19 16:36:24.91: [19275]: --> [2:OK]
> Oct 19 16:36:24.91: [19275]: RECV recv PPS (partial page signal)
> Oct 19 16:36:24.91: [19275]: RECV recv MPS (more pages, same document)
> Oct 19 16:36:24.91: [19275]: RECV received 7 frames of block 1 of
> page 4
> Oct 19 16:36:24.91: [19275]: <-- [9:AT+FRS=7\r]
> Oct 19 16:36:25.02: [19275]: --> [2:OK]
> Oct 19 16:36:25.03: [19275]: <-- [9:AT+FTH=3\r]
> Oct 19 16:36:28.02: [19275]: --> [0:]
Here's the error. See that the modem did not respond with a CONNECT
message after AT+FTH=3 ? That indicates a problem of some kind, and,
as we can see below, it occurred because the modem was in the middle of
a reset.
> Oct 19 16:36:28.02: [19275]: RECV send PPR (partial page request)
> Oct 19 16:36:28.02: [19275]: <-- [10:AT+FRM=72\r]
> Oct 19 16:36:28.27: [19275]: --> [9:AT+FRM=72]
Notice here that we have echo turned on. However, HylaFAX disables
echo before every fax, so we know that the modem was reset.
> Oct 19 16:36:28.27: [19275]: RECV keeping unconfirmed page
> Oct 19 16:36:28.30: [19275]: RECV: 1792 bytes of data, 16 total lines
> Oct 19 16:36:28.31: [19275]: RECV FAX (000001024): from 81454765271,
> page 4 in 0:12, INF, 200 x 100 dpi, 2-D MMR, 7200 bit/s
> Oct 19 16:36:28.36: [19275]: RECV FAX (000001024):
> recvq/fax000000293.tif from 81454765271, route to <unspecified>, 4
> pages in 1:00
> Oct 19 16:36:28.38: [19275]: RECV FAX: Failed to properly detect
> high-speed data carrier.
> Oct 19 16:36:28.38: [19275]: <-- [9:AT+FTH=3\r]
> Oct 19 16:36:28.38: [19275]: --> [5:ERROR]
And the error message here tells us that we're on-hook, which confirms
that the modem did reset.
My guess is that there is a bug in the USR firmware associated with
AT+FRS commands. You could try disabling +FRS and +FTS. Look at the
Topic config file (config/topic) on how to do this.
Lee.
sant...@vasia.com
Thank you very much for answering my questions. I tried to disable +FTS
and +FRS as you have suggested.
I have tested this morning and it seems to be ok. I plan to run more
test next week.
regards,
Jay