We've been having discussions around the office here about clients-who-do-not-respond and what to do about it.  Basically you've got some simple options out of the box which works in most cases.
 
Pending-reminder .. notify the agent that the customer hasnt gotten back to us, and that perhaps they should phone them up (if its important to get a response).
 
Pending-autoclose ... this is what you basically want.  Set the pending-autoclose date to next week, and you're done.  My only question is how to set the default autoclose date to 7-days-from-now.
 
Close the ticket ... I tested this, and if you close the ticket, and the customer replies, it re-opens.   Just close it and forget about it. 
 
My opinion is that if its good enough to forget-about-it 7 days from now, its good enough to forget-about-it-right-now, so let the ticket system deal with re-opening the ticket if the customer does actually respond within 7 days (or 7 months).
 
Those are my two cents. 

From: otrs-bounces@otrs.org [mailto:otrs-bounces@otrs.org] On Behalf Of Gustavo Azambuja
Sent: Friday, August 24, 2007 2:33 PM
To: User questions and discussions about OTRS.org
Subject: Re: [otrs] Auto Close old tickets

Jeff, i not find a way :-(
i do some graphs and stats with php, and now, i wish do this "feature" (close old tickets) out of the box.

In this days, i public my php's for create stats of response and other things.
Take a look of my blog (in spanish and portuguese: http://gazambuja.ideas3.com)

Thanks.

On 8/23/07, Jeff Shepherd <jeffs@tolisgroup.com> wrote:
Well, being that there has been no response I guess that the
GenericAgent can't do this.

Have you been able to find a way Gustavo?

-Jeff

Gustavo Azambuja wrote:
> how???
> in the generic agent it is not possible to be defined whichever days
> will have to happen without answer before closing ticket
>
>
> On 7/13/07, *Maurice James Ny* <maurice.james@verizon.net
> <mailto: maurice.james@verizon.net>> wrote:
>
>     The generic agent can do this
>
>     -----Original Message-----
>     From: otrs-bounces@otrs.org <mailto:otrs-bounces@otrs.org>
>     [mailto:otrs-bounces@otrs.org <mailto:otrs-bounces@otrs.org >] On
>     Behalf Of Jeff
>     Shepherd
>     Sent: Thursday, July 12, 2007 10:03 PM
>     To: User questions and discussions about OTRS.org
>     Subject: Re: [otrs] Auto Close old tickets
>
>     I've actually been curious about this feature/ability in the past.
>     Is this possible with OTRS?  I've been doing it manually for the past
>     six months.
>
>     -Jeff
>
>
>     On Jul 12, 2007, at 1:33 PM, Gustavo Azambuja wrote:
>
>     > Hi, we have lot of much tickets in state open, i want close all
>     > tickets without response of my clients in last week.
>     > With Generic Agent i dont do this, this is correct?
>     > How i do this?
>     >
>     >
>     >
>     > --
>     > Saludos,
>     > Gustavo Azambuja
>     > Linux User: 275813
>     > http://gazambuja.ideas3.com
>     >
>     > -----------------------------
>     > Este mensaje no contiene virus, porque ha sido creado con Linux,
>     > utilizando Software Libre y auditable.
>     > This message doesn't contain viruses, because it has been created
>     > with Linux, using auditable Free Software.
>     > http://es.wikipedia.org/wiki/Linux_No_Virus_Mail
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>
>
> --
> Saludos,
> Gustavo Azambuja
> Linux User: 275813
> http://gazambuja.ideas3.com
>
> -----------------------------
> Este mensaje no contiene virus, porque ha sido creado con Linux,
> utilizando Software Libre y auditable.
> This message doesn't contain viruses, because it has been created with
> Linux, using auditable Free Software.
> http://es.wikipedia.org/wiki/Linux_No_Virus_Mail
> -----------------------------
> ------------------------------------------------------------------------
>
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> Archive: http://lists.otrs.org/pipermail/otrs
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> => http://www.otrs.com/

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--
Saludos,
Gustavo Azambuja
Linux User: 275813
http://gazambuja.ideas3.com

-----------------------------
Este mensaje no contiene virus, porque ha sido creado con Linux, utilizando Software Libre y auditable.
This message doesn't contain viruses, because it has been created with Linux, using auditable Free Software.
http://es.wikipedia.org/wiki/Linux_No_Virus_Mail
-----------------------------