A Two-tier Architecture to Handle Number Portability and IN-Service Interaction.

Markus Lehmacher Wolfgang Lautenschlager Heinrich Hintzen Stephan Rupp A Two-tier Architecture to Handle Number Portability and IN-Service Interaction. 67-72 1998 conf/fiw/1998 FIW db/conf/fiw/fiw1998.html#LehmacherLHR98