Hi, 1. How have you connected your ISDNGuard (see http://www.junghanns.net/en/ISDNguard_produkt.html) box to your server ? Datasheet mentions RS232 requirement so I'm wondering if a USB-serial cord could fulfill this requirement ? 2. How does it go back into standard mode from failover mode ? Regards -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20080526/d4c58c09/attachment.htm