Re: [hylafax-users] Transmission problems: info and questions

[Ross Boylan <RossBoylan@xxxxxxxxxxxxxxxxxx>]

On Mon, May 29, 2006 at 03:44:59PM -0700, Lee Howard wrote:
> Ross Boylan wrote:
> 
...
> 
> >But as for what you call "protocol attempts" and the man page refers
> >to  as "attempts to send a particular page", I'm uncertain.
> >
> 
> In order to prevent a T.30 incompatibility from racking up 12 phone 
> calls there is this "tries" maximum that involves how many times a call 
> connected with a remote fax device and properly initiated fax protocol, 
> but then broke down on a certain page.  

Oh, so the  significance of the reference to a "certain page" is that
it means "after the initial setup of the connection."

> (This should almost never 
> happen, by the way, and the fact that it is occcuring is indicative of 
> there being more serious underlying issues.)
> 
From your later question it sounds as if you think this is a software
issue.  Could it be hardware (in the broad sense, including the phone
line)?  Could it be on the other end of the connection?  I have sent
faxes previously to these same people, I think with the same number.
At 47 pages, this is definitely the longest one I've attempted.

Hmm, I have DSL on the same line.  Could that be causing trouble?

My results appear to be pretty random, ranging from failures before
any real data are transmitted to failures after 10 pp, and covering a
whole bunch of failure modes (at least to my untrained eye).

Could other seemingly unrelated processes be causing trouble, e.g., if
they used a lot of CPU or caused a lot of swapping?  Although the
system has an 800Mhz Athlon, it's definitely sluggish.

> >>Class1SwitchingCmd:     "<delay\0727>"
> >>   
> >>
> >I put the previous line in config.ttyS0.  Now I get
> > 
> >
> 
> >May 29 14:02:20.80: [26205]: MODEM TIMEOUT: reading line from modem
> > 
> >
> 
> >May 29 14:17:59.06: [28747]: --> [9:ERATH0ROR]
> > 
> >
> 
> >May 29 14:20:05.49: [28797]: -->
> >+[265:?^Yht???1?Y?b??^]&?r^VN;^]?0^W???^A^F??T0w^V????????,^^?3?5s^V???2oP^^???Y8r_?(?9>?c^A?G|Z???(:??c?<|,??+???,?v??y;?^B????b^V?p:^P^P^Rsg
> >+?P^V? {9?me??[4?^Tn? Y
> >+z??????X?h?a/CY?k?,f?,v????^Rl??%?*$??v?^E}??^O!(??}?^K^R?^N??pA????m]K?Y^X?2^Z^Dc??h?6?S^[^R??v???-?n??Q?^WT^P^P???m??t??^K??jA????^D??^]^V?
> >+'?]
> > 
> >
> 
> >May 29 14:20:05.97: [28797]: --> [9:ERROATH0R]
> > 
> >
> 
> >Argh!
> > 
> >
> 
> Well, the config change didn't cause this.  I'm not certain, either what 
> would cause "ERROATH0R" ... is there another process (another faxgetty, 
> maybe) toying with the same modem?

lsof /dev/ttyS0 doesn't show anything.  I wonder if my desktop
environment (KDE) might be doing some intermittent search for devices
to mount.

> 
> >Do I need to restart
> >or bounce faxgetty as well (it's running from inittab)?
> >
> 
> Technically no, not for sending.  But you've got some weird stuff going 
> on there.

I killed the process shown by lsof, and a new one started from
inittab.  The relevant line is
S2:23:respawn:/usr/sbin/faxgetty ttyS0

This reminds me: I gave up on fax reception quite awhile ago because I
couldn't get it to work properly (and I have little need for it).  I
suppose that is more evidence that something is fishy.

> 
> >Did the characters get mangled in transmission (e.g., did \0727 start
> >out as something else on your end)?
> >
> 
> No \0727 is correct.  You can also write it:

Well, that rules out one possible explanation.  I notice most of my
other options that look like this do not use " "; on the other hand,
they don't use the <> either.  My background thought is that perhaps
there has been some syntax change so that the line, which is from 4.3,
isn't quite right for 4.2.

> 
> Class1SwitchingCmd:     "<delay:7>"
> 
> 
> Lee.

I'm going to wait til I talk to the intended recipient before trying
again.

Ross


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