Use it Messaging Premise supports the following hardware fax cards from Dialogic.
Use it Messaging also supports the following virtual fax driver software.
Virtual fax driver software is used for routing fax traffic over IP networks, typically via an IP-PBX, VoIP Gateway, or over SIP trunks from a VoIP servcie provider. Implementing Use it Messaging with virtual driver software also enables you to completely virtualize your fax architecture on VMWare, Hyper-V, or Xen.