[SR-Users] Simple Least Cost Routing NPA-NXX?

[JR Richardson]

Hi All,

I'm in the lab with sip router 3.0 mocking up some trunk-group prefix
routing with PDT and load balancing with Dispatcher.  This is working
great and as expected.  I would like to incorporate some sort of LCR
matching on NPA-NXX but I'm having some difficulty.  The PDT module
automatically strips the prefix so for trunk group routing it works
great but really can't be used for matching NPA-NXX.

The Carrierroute module is pretty nice and works as expected but the
issue I'm having, it appears that I have to have a NPA-NXX entry for
each domain gateway I want to send calls to.  For instance if I have 3
gateways in domain 1, then I would need the same NPA-NXX record entry
in the database for each gateway.  The database entries would be
[NPA-NXX] x [Number of Gateways] per domain.  So having 100K routes
would mean having 300K records.  Am I looking at this correctly?  This
is really what it seems like to me but logically I would think this
should not be the case?

I really like the Dispatcher polling functions to actively know what
gateways are on-line and off-line plus the different distribution
algorithms to choose from.  So it makes sense to me to implement a
pseudo PDT/Distpacher scenario as an LCR but with PDT stripping the
prefix, that can not be done.  Is there another mechanism whereby I
can dip the database looking for the NPA-NXX, extract the domain group
and send that to the Dispatcher function, without stripping the
prefix?

Or can a PDT module parameter be added to not strip the prefix.  But
I'm not sure this will work, can the PDT module hold in memory a few
hundred thousand records?

Thanks.

JR
-- 
JR Richardson
Engineering for the Masses