> 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 can think of two ways to do this:

First is for the personal agent to query the client information of the
command sender if the call command does not contain a 'from' clause.
This query returns strings like "Pidgin x.x.x", "Digsby xxx".  We would
have to build a parser that can recognize prevalent smart-phone based IM
clients and assume that the user meant 'from cell' when sending a 'call
xyz' from a smart phone client.

The second is to leverage the 'resource' information element that is
built into XMPP.  When you configure your account information in an IM
client, one of the fields you need to populate is the 'resource'.  That
resource helps the system track you when you log into your account from
multiple places.  The resource text can be chosen by the user and is
usually representative of where the IM client is running.  Typical
resource values include "home", "work", "lab", "laptop".  If we said as
a rule that when a call command does not include a 'from' clause then PA
turns to the resource value to see if it could be used as a valid 'from'
clause then with properly configured resource values, the user would
never have to enter 'from' clauses for either cell, work or home.  Of
course, the reliability of this feature hinges on the users ability to
configure things correctly.
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