Re: [hylafax-users] Send fax ERRORS: COMREC invalid response received to PPS - No response to PPS repeated 3 times

[carrieri@xxxxxx]

Hi again, Lee.

I performed the tests as you suggested and here is the results
(see log files in attached archive for more details).

Receiving fax equipments are:
06XXXX7608 Lanier 5227
06XXXX7586 Lanier 5020 MFD

Test 1
ModemSoftRTFCC: YES
Class1ECMSupport: default

echo " " | sendfax -n -F "" -t  1 -T 1 -d 06XXXX7608 (blank page)
Result OK - log file c000001246

sendfax -n -F "" -t  1 -T 1 -d 06XXXX7608 /tmp/doc22pg.pdf (22 pages)
Result KO - log file c000001256 (COMREC invalid response received to PPS)
Stopped at page 9

sendfax -n -F "" -t  1 -T 1 -d 06XXXX7608 /tmp/doc14pg.pdf (14 pages)
Result KO - log file c000001262 (COMREC invalid response received to PPS)
Stopped at page 2

-------------------

echo " " |  sendfax -n -F "" -t  1 -T 1 -d 06XXXX7586 (blank page)
Result OK - log file c000001264

sendfax -n -F "" -t  1 -T 1 -d 06XXXX7586 /tmp/doc22pg.pdf (22 pages)
Result KO - log file c000001266 (No response to PPS repeated 3 times)
Stopped at page 10

sendfax -n -F "" -t  1 -T 1 -d 06XXXX7586 /tmp/doc14pg.pdf (14 pages)
Result KO - log file c000001267 (No response to PPS repeated 3 times)
Stopped at page 2

======================================================================

Test 2
ModemSoftRTFCC: YES
Class1ECMSupport: default

echo " " | sendfax -1 -n -F "" -t 1 -T 1 -d 06XXXX7608 (blank page)
Result OK - log file c000001269

sendfax -1 -n -F "" -t  1 -T 1 -d 06XXXX7608 /tmp/doc22pg.pdf (22 pages)
Result OK - log file c000001274

sendfax -1 -n -F "" -t  1 -T 1 -d 06XXXX7608 /tmp/doc14pg.pdf (14 pages)
Result OK - log file c000001275

-------------------------------

echo " " | sendfax -1 -n -F "" -t 1 -T 1 -d 06XXXX7586 (blank page)
Result OK - log file c000001270

sendfax -1 -n -F "" -t  1 -T 1 -d 06XXXX7586 /tmp/doc22pg.pdf (22 pages)
Result OK - log file c000001272

sendfax -1 -n -F "" -t  1 -T 1 -d 06XXXX7586 /tmp/doc14pg.pdf (14 pages)
Result KO - log file c000001276 (Unspecified Transmit Phase C error)

======================================================================

Test 3
ModemSoftRTFCC: NO
Class1ECMSupport: default

echo " " | sendfax -1 -n -F "" -t 1 -T 1 -d 06XXXX7608 (blank page)
Result OK - log file c000001277

sendfax -1 -n -F "" -t  1 -T 1 -d 06XXXX7608 /tmp/doc22pg.pdf (22 pages)
Result OK  - log file c000001279

sendfax -1 -n -F "" -t  1 -T 1 -d 06XXXX7608 /tmp/doc14pg.pdf (14 pages)
Result OK - log file c000001281

------------------------------

echo " " | sendfax -1 -n -F "" -t 1 -T 1 -d 06XXXX7586 (blank page)
Result OK - log file c000001278

sendfax -1 -n -F "" -t  1 -T 1 -d 06XXXX7586 /tmp/doc22pg.pdf (22 pages)
Result KO - log file c000001280 (Unspecified Transmit Phase C error)

sendfax -1 -n -F "" -t  1 -T 1 -d 06XXXX7586 /tmp/doc14pg.pdf (14 pages)
Result KO - log file c000001282 (Failure to train remote modem at 2400 bps
or minimum speed)


=====================================================================

Test 4
ModemSoftRTFCC: NO
Class1ECMSupport: default

echo " " | sendfax -n -F "" -E -t 1 -T 1 -d 06XXXX7608 (blank page)
Result KO - log file c000001291 (No carrier detected) 1st try
Result KO - log file c000001296 (No local dialtone) 2nd try

sendfax -n -F "" -E -t 1 -T 1 -d 06XXXX7608 /tmp/doc22pg.pdf (22 pages)
Result KO - log file c000001293 (No local dialtone)

----------------------------------

echo " " | sendfax -n -F "" -E -t 1 -T 1 -d 06XXXX7586 (blank page)
Result OK - log file c000001288

sendfax -n -F "" -E -t 1 -T 1 -d 06XXXX7586 /tmp/doc22pg.pdf (22 pages)
Result OK - log file c000001292


Sending a blank page worked fine for all tests except the 4th with the
7608 fax machine.
Best results seems to be achieved with ModemSoftRTFCC enabled and the "-1"
sendfax option.

I hope these tests can help you to find a solution to my problem.
Thank you in advance.
Best regards

Ing. Luigi Carrieri
Consulente senior - Business solutions

56125 Pisa - Viale Gramsci, 12
Voice: +39 050 2202260 - Fax: +39 050 24421
Mobile: +39 335 7734062 - http://www.tai.it
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-----Original Message-----
From: hylafax-users-bounce@xxxxxxxxxxx
[mailto:hylafax-users-bounce@xxxxxxxxxxx] On Behalf Of Lee Howard
Sent: giovedì 12 aprile 2007 19.24
To: Luigi Carrieri
Cc: hylafax-users@xxxxxxxxxxx
Subject: Re: [hylafax-users] Send fax ERRORS: COMREC invalid response
received to PPS - No response to PPS repeated 3 times

Luigi Carrieri wrote:

>Thank you Lee for your help.
>Note that actually hylafax is installed in a production
>environment and it is used for daily fax communication to/from
>our customers. For outbound faxes we use hylafax
>as a mail-to-fax gateway service. Documents to fax out are
>*ALWAYS* PDF files attached to mail.
>
>So I *MUST* be careful that whatever test does not degrade the service.
>
>Here is some more information:
>
>1. In <hylafax-dir>/var/spool/etc/config.ttySx per-modem configuration file
>I
>put the following parameters
>   Class1ECMSupport:	NO
>   ModemSoftRTFCC:   	NO
>
>2. In <hylafax-dir>/var/spool/etc/config per-server configuration file I put
>the following parameters:
>	JobReqBusy:		180
>	JobReqNoAnswer:	180
>	JobReqNoCarrier:	180
>	JobRetryBusy:	20
>	JobRetryNoAnswer:	20
>	JobRetryNoCarrier:10
>	RingTimeout:	15000
>
>3. I sent the same document to both the faulty fax equipments (as in my last
>mail):
>- the first one (see success-7586.log file in attachment) received the fax
>successfully;
>- the second one (see fail-7608.log) never received the fax because of "busy
>signal detected" error. But the receiving fax equipment was NOT busy!
>Hylafax tried to dial many times and it was possible to hear the sound of
>carrier for less than a second but then the initial handshake was suddenly
>interrupted.
>The I tried to send a fax to this machine from another desktop fax equipment
>and
>all went fine.
>
>What do you think about this strange behavior?
>
>

The BUSY response from the modem when there is not a busy signal is a
modem problem.  Either contact the manufacturer for a fix or replace the
modem with a different one (preferrably with a different chipset).

As for the COMREC invalid response to PPS error that is no longer there
now that you've disabled ECM - well, unfortunately you didn't carefully
follow the tests that I specifically outlined to you... so your
reconfiguration (disabling of ECM) essentially sidestepped the problem
entirely, and it doesn't really help us come to a proper solution for it.

Furthermore, your disabling of ECM for production use is probably not
wise, in general.

Thanks,

Lee.

>-----Original Message-----
>From: hylafax-users-bounce@xxxxxxxxxxx
>[mailto:hylafax-users-bounce@xxxxxxxxxxx] On Behalf Of Lee Howard
>Sent: mercoledì 11 aprile 2007 2.02
>To: Luigi Carrieri
>Cc: hylafax-users@xxxxxxxxxxx
>Subject: Re: [hylafax-users] Send fax ERRORS: COMREC invalid response
>received to PPS - No response to PPS repeated 3 times
>
>Luigi Carrieri wrote:
>
>
>
>>Apr 06 10:32:50.80: [ 4757]: SEND send PPS (partial page signal)
>>Apr 06 10:32:50.80: [ 4757]: SEND send MPS (more pages, same document)
>>Apr 06 10:32:51.37: [ 4757]: SEND recv DCN (disconnect)
>>
>>
>>
>>
>
>
>
>>Apr 06 10:32:11.56: [ 4488]: No response to PPS repeated 3 times.
>>
>>
>>
>>
>
>
>
>>Errors always occur when sending faxes to these Ricoh fax equipments.
>>What can I do to correct these errors? Is there anything wrong in modems
>>configuration?
>>
>>
>>
>
>As for the DCN after PPS-MPS (the first log).  Does that happen *every*
>time you send *any* fax to this destination?  We've seen at least two
>reports of this kind of thing going on, but we have not been able to
>nail anything down because in the first case that I investigated the
>problem suddenly disappeared on its own, and in the second case the
>reporter never has followed up with test results.
>
>If it is not completely reproducible 100% of the time then please
>determine under what conditions it is at least reliably reproducible,
>and report back.  If you can get it 100% reproducible, then follow these
>steps:
>
>First, call the receiver up and have them reboot their fax machine.
>Then retest.  If it works then report back.  If not, go to the next step.
>
>Second, send them a test fax like this:  echo " " | sendfax -n -F "" -t
>1 -T 1 -d <fax_number>   If it works then report back.  If not then go
>to the next step.
>
>Third, send them a test fax like this:    echo " " | sendfax -1 -n -F ""
>-t 1 -T 1 -d <fax_number>
>
>Fourth, in your modem config file put "ModemSoftRTFCC: no" and then send
>them a test fax like in the third step.
>
>Fifth, send them a test fax like this:  echo " " | sendfax -n -F "" -E
>-t 1 -T 1 -d <fax_number>  Report back.
>
>Hopefully that's enough testing for me to get an idea as far as what's
>going on.
>
>As for the "no response to PPS" error.  Please call the receiver and
>find out if they received any of the page at all.  And if they did, then
>please see if any of the page was missing.  Please report back on that.
>Also, following the steps above would be quite helpful for this case, too.
>
>Thanks,
>
>Lee.
>
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>


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