Diferent Session-Timeout depending on NAS

Hi people, I have been working with RADIUS for sereral years and now we want to implement a different accounting for prepaid cards. I will explain my quesion shortly. Two types of hotspots zones: Spain and Mexico. Everyone know prizces in Mexico are cheaper than in Spain. Well, my accounts are valid in both countries, however the conection time are shorter in Spain than in Mexico. How can I modify the Session-Timeout attribute depending on NAS? Thanks. _________________________________________________________________ Horóscopo, tarot, numerología... Escucha lo que te dicen los astros. http://astrocentro.msn.es/