Which ports needs to be opened on server firewall or IP Filter?.What are the details to consider in First BigAnt Office Messenger (client) run?.What are the details to consider in First BigAnt IM Server run?.I noticed there were 3 default user accounts (Admin, Ant_Secretary, Ant_Guest_Web) existed on server, will they be calculated in the license I purchased?.I'm using the BigAnt Office Messenger standard version now, if I need to upgrade to BigAnt Office Messenger Pro version, does only the price difference will be charged?.Is it possible to upgrade my License pack in future?.How to Register BigAnt Office Messenger?.Does BigAnt Office Messenger one time pricing?.How can I access BigAnt IM server from Internet?.How to uninstall BigAnt Office Messenger?.How to install BigAnt Office Messenger?.General features of BigAnt Office Messenger.Comparison between BigAnt Office Messenger Standard version and Pro version?.Can BigAnt Office Messenger work in Terminal Server Environment?.Does BigAnt Office Messenger works with both internet connection and intranet connection?.What kind of database supported by BigAnt IM server?.Is the BigAnt Office Messenger using IM Server/Client or Server-less architecture?.Does BigAnt Office Messenger support Windows Active Directory?.Does BigAnt Office Messenger work with VPN?.