> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf Of 
> Lawrence, Scott AVAYA (BL60:9D30)
> Sent: Friday, January 22, 2010 10:05 AM
> To: Joly, Robert AVAYA (CAR:9D30)
> Cc: [email protected]
> Subject: Re: [sipX-dev] PA Command Improvements
> 
> On Fri, 2010-01-22 at 09:44 -0500, Robert Joly wrote:
> > > So after having used PA for some time now I wanted to get some 
> > > opinions on the command syntax.
> > > 
> > > The only command I find to be a pain is the call command.  
> > > Using this from a mobile phone (which I do often) it is a 
> total pain 
> > > to have to type from cell for every call I want to make.  
> We need a 
> > > way to set your calling location and/or use some mechanism to 
> > > determine where you want the call.  Right now I type: call 
> > > number/name from cell. Ideally I would like to make it just call 
> > > number/name
> > > 
> > > Is there a way for PA to remember where the last call was 
> made from? 
> > > So for the 1st call do call number/name from cell and then for 
> > > subsequent calls I need only do call number/name
> > > 
> > > Opinions...
> > 
> > 
> > The idea would be to instrument the PA to make an educated 
> guess as to 
> > what to use as the 'from <device>' clause when it is not explicitly 
> > specified by the user.
> 
> I think the real answer is create a custom client that makes 
> all these commands just pushbuttons.  The xmpp text exchange 
> itself should be treated as an external API.  Then the app 
> can do the right thing and the user doesn't even need to know 
> it's happening.
> 
> Short of that, I think the right approach is to just have the 
> PA send the initial user INVITE to all the possible targets 
> at once, and use the first one that answers - the user 
> configures which of his contact numbers should be used for 
> the 'call' command by default (that is, when there is no 
> 'from' clause), and they all get used.  No guessing involved
> - let SIP sort it out.
> 

Using such a configuration or leveraging just the call forwarding
rule(s)
leaves things a bit too static. A mobile user is out and about at 
unpredictable times (even the user cannot predict) so having to change
the configuration
constantly is rather painful. The idea is the user can tell the system
quickly where they are
via an "at <> until <>" sort of command. This would work as long as the
info was passed to the 
Rest of the system so all call routing would use this information. 

Peter
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