Brand new 2012 R2 - all current updates
USR 5686-05 External COM1 modem (driver included w/ Windows only per Manf.)
Only HyperV and necessary Fax Server roles installed.
Configured fax service - http://technet.microsoft.com/en-us/library/jj134193.aspx
Modem worked fine on old SBS2003
when receiving modem answers, begins handshake then service crashes
when sending from client i had a message get stuck in the que although it was not visible in the manager -- it kept attempting to resend as service would restart but again crashes during or immediately after handshake
have a new USB modem on the way
found a number of similar issues with 2k8R2 but no hotfixes for 2012
Event 7031 The fax service terminated unexpectedly. It has done this X time(s). Blah blah restart the service.
No other info I can find re: crash. Need somewhere else to look for clues or others experiencing same issue.
Thanks!