[Users] How do I only INVITE if I am registered?

Consider the case where there are two fones, both registered as the same subscriber (foo(a)bar.com) I have max_contacts == 2, therefore the fones actually register I now add a *third* fone, also registered as foo(a)bar.com Since max_contacts == 2, this fone does *not* register. However, if a user makes a call from this fone, the call will go through. I wish to prevent this. What do I do? Something obvious that I am missing? Or something weird with twiddling with the RURI and using "registered(domain)"? Or heavy AVP mucking around? Cheers -- ******************************************* Mahesh Paolini-Subramanya (703) 386-1500 x9100 CTO mahesh(a)aptela.com Aptela, Inc. http://www.aptela.com "Aptela: How Business Answers The Call" *******************************************