I've read through previous postings on IP faxing but not found anything for MGCP. If customer has an MGCP gateway and wants incoming faxes delivered direct to their UM Unity what solution will do this? And does the user need a dedicated DDI?
Yes, depending on the type of fax server, you may be able to integrate it with an MGCP gateway. Some fax servers such as RightFax have TDM interfaces like PRI interfaces, which you could connect in a back-to-back configuration with a PRI port on your MGCP gateway.
Hope this help.