Steve, Thanks, that's helpful. Please let me be clear, I'm not asking for a way to fix them, but rather a way to see if slips are happening in the first place. The annoying tick is helpful information ... we can listen for that. I was hoping a more diagnostic way might exist. I guess not! ;-)
-d ----- Original Message ----- From: "Steve Underwood" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, May 24, 2004 9:55 AM Subject: Re: [Asterisk-Users] RxFAX generates no tiff file > Hi Darren, > > There is no guarantee your problem is frame slips. However, a number of > people have reported problems with rxfax going wrong in the middle of a > page. A number have reported other fax hardware doing the same thing. > Every one I have investigated so far has been the same problem - frame > slips. It is a puzzle to me how these had previously gone unnoticed, > since they usually produce an annoying tick each time a slip occurs. > However, it seems a lot of people are operating their trunks like that. > How to fix them? This is left as an exercise for the reader...... > Seriously, there are too many differences between people's setups for me > to really say. If you have a channel bank, * should be the clock master > for that channel bank. Try checking that it is. > > Regards, > Steve > > > Darren Nickerson wrote: > > >Steve, > > > >The IRQ miss counter is only 45, and we've sent thousands of faxes since the > >last boot. I'd like to understand the IRQ miss problem and do what we can to > >remedy it, but I think that may be separate and distinct from our faxing > >problems. > > > >Faxes fail without the IRQ miss counter incrementing. > > > >Anyway, the question I was really looking for you to tackle was 'how do I > >detect the frame slips you say we all have' ;-) > > > >-d > > > >-- > >Darren Nickerson > >Senior Sales & Support Engineer > >iFax Solutions, Inc. www.ifax.com > >[EMAIL PROTECTED] > >+1.215.438.4638 > >+1.215.243.8335 (fax) > > > >----- Original Message ----- > >From: "Steve Underwood" <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]> > >Sent: Monday, May 24, 2004 8:34 AM > >Subject: Re: [Asterisk-Users] RxFAX generates no tiff file > > > > > > > > > >>Hi Darren > >> > >>If you are seeing IRQ misses there must be data misses too. :-) > >> > >>Regards, > >>Steve > >> > >> > >>Darren Nickerson wrote: > >> > >> > >> > >>>Steve, > >>> > >>>We have no frame slips, so we probably have a frame slip problem ;-) > >>> > >>>This may be plaguing us on our faxing. Gain and echo cancelation (ie: > >>> > >>> > >none) > > > > > >>>are all approximately correct, and yet still we cannot get reliable > >>> > >>> > >faxing > > > > > >>>through the POTS lines plugged into our FXO card on the Adit (whereas we > >>> > >>> > >can > > > > > >>>fax well when using the POTS lines directly). Faxing T1 -> T1 via a > >>> > >>> > >TE405P > > > > > >>>works well, ... it's only when we try to use the connection to the Adit > >>> > >>> > >(24 > > > > > >>>fxs_ks channels in a T1) that things go horribly wrong. > >>> > >>>Is there any sure-fire way to detect frame slips? I see a counter for IRQ > >>>misses with zttool, but that's all. In my Adit600 I see lots of measures > >>> > >>> > >of > > > > > >>>errors (line errored seconds, controlled slip seconds, bursty errored > >>>seconds etc) but they're all zero. > >>> > >>>Am I missing an obvious way to detect./observe these events? > >>> > >>>-Darren > >>> > >>>-- > >>>Darren Nickerson > >>>Senior Sales & Support Engineer > >>>iFax Solutions, Inc. www.ifax.com > >>>[EMAIL PROTECTED] > >>>+1.215.438.4638 > >>>+1.215.243.8335 (fax) > >>> > >>>----- Original Message ----- > >>>From: "Steve Underwood" <[EMAIL PROTECTED]> > >>>To: <[EMAIL PROTECTED]> > >>>Sent: Sunday, May 23, 2004 8:03 PM > >>>Subject: Re: [Asterisk-Users] RxFAX generates no tiff file > >>> > >>> > >>> > >>> > >>> > >>> > >>>>Hi Petr, > >>>> > >>>>For most people who are sure they have no frame slips, the problem > >>>>usually turns out to be frame slips :-) > >>>> > >>>>If you are *really* sure you do not have frame slips, then uncomment the > >>>>first line in t30.c, and rebuild and reinstall spandsp. The when you > >>>>exchange a fax you should end up with a pair of audio files in your /tmp > >>>>directory - one for the transmit signal and one for the receive signal. > >>>>Send those to me, and I will investigate. > >>>> > >>>>Regards, > >>>>Steve > >>>> > >>>> > >>>>Petr Grussmann wrote: > >>>> > >>>> > >>>> > >>>> > >>>> > >>>>>I have same problem connected to PBX over E1 and sync and not slip I > >>>>>have latest version spanDSP > >>>>> > >>>>>I receiving 1/3 pages from faxis > >>>>> > >>>>>? > >>>>>who is a problems-) > >>>>> > >>>>> > >>>>>I > >>>>>Steve Underwood wrote: > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>>>Hi Troy, > >>>>>> > >>>>>>People had a lot of problems like this with earlier versions of > >>>>>>spandsp. However, the latest version is pretty solid, and people are > >>>>>>using it in high volume production applications. If you are getting > >>>>>>these bad results with the latest version I would be interested to > >>>>>>see the audio log file, so I can investigate the reason. > >>>>>> > >>>>>>Regards, > >>>>>>Steve > >>>>>> > >>>>>> > >>>>>>Troy Settle wrote: > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>>>Dunno about not being able to generate a tiff, I got rxfax to do > >>>>>>>that, but > >>>>>>>they're badly malformed. > >>>>>>> > >>>>>>>http://roanoke-voip01.psknet.com/fax/ > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > > _______________________________________________ > Asterisk-Users mailing list > [EMAIL PROTECTED] > http://lists.digium.com/mailman/listinfo/asterisk-users > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users