We have two ADSL lines on fall-back (if one dies, the other takes over). One is at abc.ourdomain.com, the other is at xyz.ourdomain.com One is locally addressed as 192.168.1.1, the other as 192.168.1.254 When one dies, (the system uses two gateways, both configured as above -- 192.168.1.254 and .1) the router is temporarily turned off, and the system stops receiving incoming calls--one should have thought this would have been transparent. When the non-working gateway is restored, the system still does not receive incoming calls. We have found the only way around this is to reinstall the switch Has anyone please got any better, and more sophisticated ideas? Many thanks in advance. Stephen.