You can upload an ISO image to the server from a previously configured file server (http, https, ftp, sftp or scp). The process for this is the same for virtual and non-virtual machines. Refer to the IP Office Web Manager documentation for full details.
To configure a remote file server source:
1.Login to IP Office Web Manager on the virtual machine.
3.Click on the Solution Settings drop-down and select Remote Server Options.
4.IP Office Web Manager lists the currently configured remote servers.
5.Click Add Remote Server.
6.Enter details for the remote file server hosting the ISO image. The details required vary depending on the protocol used by the server.
7.Click OK. The new remote server is now included in the list of remote servers. Click Close.
To transfer the ISO from a remote file server:
1.Login to the server's web configuration menus.
2.Click Solutions.
3.Click on the Actions drop-down and select Transfer ISO.
4.Click Transfer from and select Remote Location.
a.Click Select Remote Server and select the previously configured remote file server from the list.
b.In the File path field, enter the path to the ISO image on that server.
c.Click OK. The menu shows the progress of the download.
5.When the download has finished, the menu displays the available version. Click Close.
6.The servers listed in the Solution overview show an 
icon and Upgrade Available. Proceed to Upgrading from a downloaded ISO.