Hi, I'm trying to set up a voip gateway between a classic pbx and ip network with asterisk. phones -- pbx -- * -- ip network I would like a prefix ( 0 ) for the classic calls and another prefix ( 1 ) for voip calls. The problem is that pbx can talk with asterisk only with S0 synchro (like a terminal) and succeeded not to make call with prefix in this mode. I also try to consider asterisk like a provider, but pbx and asteisk don't snchronyse themselves. (need pbx protocol like qsig I think). I use a old isdn card (Dynalink IS64PH Adapter) with isdn4linux and modem asterisk chanel. Is it possible to do that with my old isdn card ? else, which card type I need ? isdn active ? E1 ? which protocol need to be implement in the card ? Is anybody succed to make a gateway between pbx and ip ? Thanks for all. Jerome Vous manquez d?espace pour stocker vos mails ? Yahoo! Mail vous offre GRATUITEMENT 100 Mo ! Cr?ez votre Yahoo! Mail sur http://fr.benefits.yahoo.com/ Le nouveau Yahoo! Messenger est arriv? ! D?couvrez toutes les nouveaut?s pour dialoguer instantan?ment avec vos amis. A t?l?charger gratuitement sur http://fr.messenger.yahoo.com