I have the same symptoms,Only with 9951 phones and CFS,  Call to the avaya then return to the cisco system, Call Flow 9951  to  a MGCP gateway then to avaya then avaya extension, Once rna or cfa  call is sent to the unity connection, you will see the...

I was curious is this utility still out there?  I have a system that I am going to update and need to dump the old handler information I am running unity 7.0.2.  I looked at the down load spots and cant fine it,  Any help apprecieated thanks Curt