Michael and Ken,

Thanks for setting me on the right track! What I end-up configuring for now is:

^(?:1)?([2-9]\d{2}[2-9]\d{6})(?:;npdi=(?:yes|no))?(?:;rn=([2-9]\d{2}[2-9]\d{6}))?(?:;npdi=(?:yes|no))?

It puts destination number in $1. It also puts LRN in $2 provided it's supplied. Either yes or no are allowed for npdi=. I'm not capturing npdi= into any variable because as I realized all I really need is LRN.

For example, all of these:
6045555555;npdi=yes;rn=7785550001
6045555555;rn=7785550001;npdi=yes
16045555555;npdi=yes;rn=7785550001
6045555555;rn=7785550001

Will pass and result in:
$1=6045555555
$2=7785550001

And all of these:
6045555555
16045555555
6045555555;npdi=yes
6045555555;npdi=no

Will also pass and give:
$1=6045555555
$2=empty

I'll be glad if this regexp example helps someone.

Cheers,
-Victor

      On 13-01-07 08:59 PM, Michael Collins wrote:

    

    
In this case the ? modifies the *, so there's .*
      (greedy) and .*? (not greedy)

      

      You want your .* to match as little as possible instead of as much
      as possible. If you use .* instead of .*? then your $2 would
      contain both the ndpi info but also it would have
      ";rn=18005551212" b/c the .* would grab all that stuff. The .*?
      would only grab up to the ";rn".

      

      Just adding that info for posterity's sake. :)

      

      -MC

      

      
On Mon, Jan 7, 2013 at 5:05 PM, Ken Rice
        <krice@freeswitch.org>
        wrote:

        

          

            Ooops yeah I mean .*... The ? Is
                pretty useless there... Since there should always be
                something if they send ndpi=

                

                

                On 1/7/13 7:00 PM, "Michael Collins" <msc@freeswitch.org>
                wrote:

              
            

              

                


                    

              

              Just a quick FYI... be careful
                  when you use .* because it will try to match
                  EVERYTHING. Also, Ken accidentally typed (*.) which
                  I'm sure wasn't what he was aiming for. ;)

                  

                  Maybe this would be more effective:

^(?:+1|1)?([2-9]\d{2}[2-9]\d{6});ndpi=(.*?);rn=([2-9]\d{2}[2-9]\d{6})$

                  

                  -MC

                  

                  
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      -- 

      Michael S Collins

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