mforrence and Joe W. - thanks for the replies. That is the precise documentation I followed to successfully route some test faxes.
The issue is that we're configuring ICR to route to an extension, then to a "user". I'd like to be able have IPO use ICR to send calls straight to the huntgroup/FF, and then have FF route the fax via 'facsimileTelephoneNumber' Active Directory attribute as it easily set via standard AD user GUI tools. The "mtff-FaxExtension" (I believe) and only be inserted/added via the ADSI MMC snap-in. I'm looking to future-/"idiot"-proof this as we add or replace personnel.
FYI, I posed the same question to MultiTech, and this was their reply:
"The FF440 can route on DTMF digits, on Caller ID, or by the line the call comes in on. When routing on DTMF digits we route on the mtff-FaxExtension AD attribute. I could create a feature request to route on facsimileTelephoneNumber if you want so it can be considered in future firmware updates."
IP 500 8.1(63)
VMPro 8.1.9016
46/5610s, 46/5621+25s