I maintain a legend network with site A = Legend V7.0 & CVM (Audex)~~ site B AND C are Magix. Direct Voice Mail has been working from any site, to any other site for 5 years, apparently even though should not have.
I added, at site A, 100 new "Virtual DID" to VM by renumbering some adjunct ranges (used 501-599). It appears that then, or up to 2 weeks later, it no longer works from the Legend (A) to B & C (Magix's). (A to A ok) But B & C can DVM A&B&C. HA!

The Network docs state this:

"Direct Voice Mail can be used for local extensions only and cannot be used for
non-local extensions. The person calling and the person being called must be on
the same system. In Release 6.1 and later systems, if a local extension is covered
by a centralized VMS/AA at a remote system, Direct Voice Mail can be used to
place or transfer a call directly to a local extension’s voice mailbox on the
centralized VMS/AA without ringing the telephone."

My customer says "fix it". Did some GURU in my past guide me thru secret fixes that I unknowingly messed up, or what?
Your assistance is appreciated!