FreeRadius and Ericsonn NAS

[David Goodenough]

Has anyone connected FreeRadius to an Ericsonn NAS which identifies itself
as:-

Ericsonn AB - Packet Core Networks

My FreeRadius setup is receiving an Access-Request and is sending back an 
Access-Accept but the NAS thinks it is being rejected.  Apparently this NAS
does not have easily accessible diagnostic logs and matters are complicated
as there is one guy with access to the Ericsonn who has only ever used 
Steel Belted Radius before, me who has never used FreeRadius (or any other
Radius come to that) and a network managed by others who had firewall 
problems getting the packets to flow between the NAS and FreeRadius.

Any help greatfully received,

David