I have a customer that has an 11 site cluster, with resilient phones across various nodes, that was just upgraded from 9.0 to MCD 4.2 (all the farther we could go due to other equipment compatibility).
Here is the issue I am having:
Call comes in to Node 2 on a PRI and is answered by a phone that is resilient to Node 2&1 (Node 2 primary, 1 secondary), and parks the call on a resilient phantom hunt group extension (Node 1 primary, node 2 secondary). When this happen the caller hears MOH for about 3 seconds then silence, but is still parked and can be retrieved. If the user just puts the call on hold, or parks it on an actual extension, the MOH works fine.
If a call comes in to Node 1's PRI and is answered by a phone that is resilient to Node 1&2 and parks it on the same hunt group, the MOH works fine.
I never heard a complaint of this issue on 9.0.
The only thing I can see in programming is that is COS option "Local Music on Hold source" on the PRI's COS, I have tried it both ways with no change in the behavior... What am I missing?