[OpenSER-Users] how to restrict invite when regiest unsuccessful

[liu york]

hi 

I want to  restrict invite  when regiest unsuccessful even the invite request have right authentication.
actually,i just want to only one person can call to pstn,others cant call even have sipid and password.now i has set by
modparam("registrar", "max_contacts", 10).but cant restrict the invite by the sipphone no need regiestion.

so plz help,many thx.