[hylafax-users] high %age of international faxes fail

[Declan Shanaghy]

I have been running a hylafax server for nearly 6 months now.

I have noticed that on an ongoing basis about 33% of international faxes fail.

 

Granted some of them are due to incorrect numbers but a big amount are definitely fax machines.

And usually the fax succeeds when sent via a real fax machine after hylafax has failed.

 

I have noticed that most failures are to countries which *may not* have the latest and greatest telecomm networks.

These are countries such as India, turkey, Ukraine, UAE. However contrary to this observation I noticed 44 of 79

faxes to the UK failed this month (not sure how many are wrong numbers).

 

Can anyone provide some more insight into how I can improve reliability for international faxing?

 

 

[Lee Howard]

Declan Shanaghy wrote:

> Can anyone provide some more insight into how I can improve
> reliability for international faxing?

Send some sample session logs so that we can see what kind of errors
you're talking about. There should be no difference between domestic
and international faxing.

Thanks,

Lee.

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[Declan Shanaghy]

Its probably overkill to send complete error logs.

The usual errors fall in a wide range

Invalid response to MPS
DCS sent 3 times without response
No carrier detected
COMREC error in transmit
COMREC invalid command response
Failure to train at 2400
Unspecified Transmit Phase B/C
No response to EOP repeat

I have even seen "No carrier detected" and used a regular
fax machine with no problems afterwards.

[Lee Howard]

Declan Shanaghy wrote:

>Its probably overkill to send complete error logs.
>
>

Perhaps, but just sending me the error message does not help, either.

>The usual errors fall in a wide range
>
>Invalid response to MPS
>DCS sent 3 times without response
>No carrier detected
>COMREC error in transmit
>COMREC invalid command response
>Failure to train at 2400
>Unspecified Transmit Phase B/C
>No response to EOP repeat
>
>I have even seen "No carrier detected" and used a regular
>fax machine with no problems afterwards.
>
>

Some of these look like Class 2 errors... are you running in Class 2 or
Class 1? If you're running in Class 2 switching to Class 1 should help.

[Declan Shanaghy]

OK
Ill dig up some log files during the day.

I don't suppose there's any way to switch from class 2
to class 1 on the fly is there?

-----Original Message-----
From: Lee Howard [mailto:fax...@howardsilvan.com]
Sent: Tuesday, February 21, 2006 7:18 AM
To: Declan Shanaghy
Cc: hylafa...@hylafax.org
Subject: Re: [hylafax-users] high %age of international faxes fail

[Lee Howard]

Declan Shanaghy wrote:

>I don't suppose there's any way to switch from class 2
>to class 1 on the fly is there?
>

Stop running faxgetty on the modem. Then run re-run faxaddmodem and
choose Class 1. Then start running faxgetty again.