atcomsystems.ca/forum Forums TDM Business Telephone Systems Inter-Tel Telephones & Systems Uniffied Messaging Error with Office 2007

I'll have to try the above ideas, but the reason Inter-Tel isn't supporting Outlook 2007 or 2003 SP3 is likely that they want the client-model UM approach to go away. Too hard to support. The new UM OSE (IMAP) model works pretty well, isn't as 'fancy' as the client type but doesn't require client-side s/w so they really are pushing that solution.