Jim, You can schedule the exchange site connector (providing you are not using a 'Site Connector'). I would suggest X400 connector for this purpose. This will allow you to control when the exchange server communicates between sites. NT 4.0 DC relationships don't really have any way to schedule synchronisation between servers but you could always upgrade to Windows 2000 if you really needed to schedule the sync. What will be defined as 'interesting traffic' to bring up the ISDN connection? If you can control this outside the NT 4 world, then you could create an access list to block NetBIOS over TCP/IP and RPC traffic and allow the necessary traffic. X400 could be configured to send messages immediately (which would dial the connection) or as needed in the X400 connector, and you could schedule your directory connector between the two sites to only synchronise a couple of times a day, to keep the traffic on the link to a minimum. This would still allow your PDC/BDC to synchronise when the link is available, but would not dial the link or keep it active after the idle timeout. Remember that your clients need to have access to the PDC to reset their passwords and you won't be able to do any administration work on the domain from the site with the BDC, unless the line is active. It would probably be better to configure each site with a PDC in different domains and configure a two-way trust between them. Exchange will still work (I would suggest configuring with a service account local to the specific exchange server, and use the 'override' security function when connecting between sites) but you will not have problems relating to NT 4 replication. Let me know if this helps - I can provide more info if needed. Regards Adam Burgess Brisbane, Australia ----- Original Message ----- From: "Jim Bond" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, February 19, 2001 12:18 PM Subject: ISDN > Hello, > > We are trying to set up an ISDN from China to US. In > order to lower the ISDN charge, we'll put a BDC and an > Exchange server locally. The concern is BDC to PDC and > exchange servers sync will make the ISDN line up all > the time. Any suggestions? > > Thanks in advance. > > Jim > > > __________________________________________________ > Do You Yahoo!? > Get personalized email addresses from Yahoo! Mail - only $35 > a year! http://personal.mail.yahoo.com/ > > _________________________________ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
