[Serusers] Multiple organizations using same SER box

[Terry Wilson]

I'm wanting to let several companies share one of my SER boxes.  These
companies have overlapping extensions for their phones (the
registrations are unique, though).  Is there something I could do,
perhaps with avp's, to denote which organization a particular call
should be subject to?  For example:

Company 1

Exten: 1234   SIP user: alice
Exten: 1235   SIP user: bob

Company 2

Exten: 1234   SIP user: eve
Exten: 2345   SIP user: frank


If bob calls alice by dialing 1234, is there a way to look up the
organization, and rewrite the uri to go to the correct place so that
alice doesn't accidentally get sent to eve?  I would like to do this
without static rules in the ser.cfg so that I can just set the
organization by adding an avp when I create the users.  I am also
using CPL to handle dialplan type of issues already.  Anyway, thanks
for any help!