Hi,
 
This more than likely goes back to using the correct OP values, so I'm hoping someone can shed some light on this.  I have a groupcheck requirement that requires a value of a attribute to be either one, or the other.
 
NAS-Port-Type := ISDN, NAS-Port-Type := Virtual
 
Now, obviously I can't add it like the above. I will only receive ISDN *or* Virtual, not both.  What OP should I use to make it check of one or the other? 
 
Thanks,
Chris