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RE: Reliability

From: Joao Carneiro - DLS
Subject: RE: Reliability
Date: Tue, 9 Nov 2004 17:25:23 -0000

I'm not na expert, but what about firmware versions?
Do you have older firmware versions for those phones or they are all using
the same ones? 

           João B. G. Carneiro




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-----Mensagem original-----
De: address@hidden
[mailto:address@hidden Em nome de Florin
Enviada: terça-feira, 9 de Novembro de 2004 15:58
Para: Discussion forum for gnokii users.
Assunto: Re: Reliability

Hi kathir, thank you for your input.

Unfortunately our code is not open (as I said it's not part of gnokii nor
based on gnokii or other open-source product). Therefore I cannot post or
e-mail it.
It's been running in "production" for at least 4 years now (probably more),
but some of the devices occasionally lose the connection with the phone. I
was not bothered by this until now because there were always other possible
reasons. Now it begins to bother me and I thought that the gnokii user-pool
might have some true hands-on experience in this matter (and is willing to
share it, too).

As I said, in my case, about 2-3 % of the devices are losing connection
after one day up to one week (controlling system is 386SX @ ~16MHz).
In another case, I get a much higher rate of failure with basically the same
code (running on x51 @ ~11 MHz).
In both cases the controlling code _does_not_crash_. Moreover, the code is
written to proactively restore the communication with the phone. As soon as
the phone is restarted, the controlling device "catches up" and
reestablishes the connection, so I do not think it's a code issue.
I suspect it's a hardware problem or some software glitch in the phones we
use, but I wanted a confirmation from someone on gnokii list with extensive
experience on 5110/6110 .

All the best to you,

----- Original Message -----
From: "kathir" <address@hidden>
To: "Discussion forum for gnokii users." <address@hidden>
Sent: Tuesday, November 09, 2004 1:39 PM
Subject: Re: Reliability

> Dear Florin Vancea
>                                   i am using 5110  for doing project "SMS
> Prior to that i tested with pc     i am able to receive  SMS frames  and
> able to decodee it. now i want to port it to PIC   using ccs cross
> i found no  failures . i enclosed source code for u.. if u send u r code
> may be useful to fix the bugs
> address@hidden
> ----- Original Message -----
> From: "Florin Vancea" <address@hidden>
> To: "Discussion forum for gnokii users." <address@hidden>
> Sent: Tuesday, November 09, 2004 11:50 AM
> Subject: Reliability
> > Hello there,
> >
> > Is anyone on this list using 5110 or 6110 "in the long run"?
> > I mean using it for something _continuously_, like server monitoring or
> the
> > like.
> > I wonder if you experienced any communication failures that require the
> > phone to be restarted (eventually by battery removal).
> > What's the average MTBF?
> >
> > (I am _not_ talking about restarts caused by PC-side; only the ones
> > due to the phone failing to communicate at some point in time).
> >
> > If possible, please mention the serial adapter hardware used for the
> > connection.
> >
> > I am running an embedded system (not gnokii-based but using the same
> > principle) communicating with 5110/6110 and every once in a while (i.e.
> days
> > or maybe weeks) the link is lost and the phone must be restarted (with
> > system restart). It does not happen to every system/phone combination.
> > like to know if it's possible to be a phone or serial hardware fault.
> >
> > Thank you,
> > Florin
> >
> >
> >
> >
> > _______________________________________________
> > gnokii-users mailing list
> > address@hidden
> >


> _______________________________________________
> gnokii-users mailing list
> address@hidden

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