Re: [hylafax-users] Is this evidence of line noise ?

["George H" <george.dma@xxxxxxxxx>]

On Jan 15, 2008 6:29 PM, Andrew Rinaldi <andrew.rinaldi@xxxxxxxxxxxx> wrote:
> George H wrote:
> > We're using a CISCO C3825 Voice Gateway
>
> Okay, so that's an IP based phone switch
>
> > And i'll repeat the modem session long attached is the modem going
> > through the FXS -> FXO -> E1.
>
> Well, I suspect that you could have a whole cloud of IP based routing
> between those ports.... I don't know enough about these Cisco systems to
> tell you that either way.  I do know that the Linksys One works in that
> way.  If someone can analyse the HylaFAX logs in detail then maybe that
> will confirm my hunch.  You could also try contacting Cisco and asking
> them the question.

I was told that there is 'routing' being done from inside the switch
that routes the modem traffic to the E1 and to the FXO. I read a bit
of the cisco docs (something I really didn't want to do because it is
completely out of my scope and skill set) and find out that according
to cisco those ports support faxing and are made to interface with
faxmachines. So I don't know how to go about debugging the problem to
conclude with "that big expensive piece of hardware is causing 20% of
our clients connection errors" while the other 80% are doing fine. You
understand my situation.

> If you have a 'real' analog POTS line then moving one of your high
> volume numbers to that would help narrow down the issue. If you only
> change the line type and NOTHING else then if your problems go away you
> know it's the switch.

That may be a bit hard for me to do, plus where I am no one will do
anything unless I show them evidence to support a change in the line.
So any sort of analysis of the modem logs that can clearly indicate a
problem with faxes coming through the gateway would be good. I can set
up a test where I get a fax machine to send faxes continuously to a
separate hylafax server through the gateway, but dunno if that will
precipitate the same kind of session logs.

>
> Regards
>
> Andrew Rinaldi
> Mainpine Developer Support
> USA +1 503 822 9944 | UK +44 8458 909438
> andrew.rinaldi@xxxxxxxxxxxx | www.mainpine.com
>

-- 
"Nothing is impossible for the person that doesn't have to do it"
"The probability of anything happening is in inverse ratio to its desirability"
--
George H
george.dma@xxxxxxxxx


____________________ HylaFAX(tm) Users Mailing List _______________________
  To subscribe/unsubscribe, click http://lists.hylafax.org/cgi-bin/lsg2.cgi
 On UNIX: mail -s unsubscribe hylafax-users-request@xxxxxxxxxxx < /dev/null
  *To learn about commercial HylaFAX(tm) support, mail sales@xxxxxxxxx*