Hi bavltd,

I have it set up and tested, if you put group 501 into fwd station menu on the vm.
eg; 501 - goto - MBX - 501
Set a key on each phone as MW501 (no VG keys on 7100)

ensure there is a mailbox for group 501 not just an extension (set it through vmadm key as is quicker)

dial 501 and watch your vm status screen to see if all correct routing.