Technical information

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Virtual Fax Server
Virtual Fax Server
The virtual fax server is a remote vfx command line client. It includes all the functionality of a full fax server except
that you cannot connect fax devices to it or send faxes directly from it. You must connect your virtual fax server to a
full fax server, via a network, to complete your integration.
Do I need this?
If you intend to use vfx commands as your delivery mechanism (Refer to Delivering the fax envelope for more
information) and you need to issue these commands remotely (i.e., from a different IP address than the fax server IP
address), you must install a virtual fax server on the remote computer or workstation.
Capabilities and limitations
Once the virtual fax server is installed, you can issue vfx commands just as if you were logged directly into the fax
server. You have access to all the commands and utilities available in a full fax server (e.g., administrative commands
and reporting utilities).
However, you cannot connect fax devices directly to a virtual fax server.
To submit faxes from the Virtual Fax Server (VFS) machine, the VSI-FAX license installed must support Virtual Fax
Server and the IP Address or the DNS Name of the VFS machine must be enterered in the VSI-FAX database. Any
user submitting faxes from the VFS machine must be a licensed VSI-FAX user.
When issuing VSI-FAX command from the VFS machine you can direct the commands to the full fax server by
adding a -H <hostname or IP> to the command line or by setting the Hostname parameter in the vsifax.ini
file to the hostname or IP address of the full fax server.
Requirements
Virtual fax servers can be installed on any supported platform (e.g., Linux, Unix, or Windows).
Virtual fax servers use a special VSI-FAX license supporting Virtual Fax Server, which you must obtain from your
VSI-FAX authorized reseller or directly from Esker before you can install it.
In order to send or receive faxes, the virtual fax server and the full fax server must share the same local area or wide
area network.