We have two sites connected via MPLS for spnet. Problem that we are having is when customer tries to transfer a call from site A to site B the call drops off and MGI cards at each site get a network error alarm and seem to reboot.
Internal calls work fine it is only transferring an external call (they have a PRI service)
Both system are 7100 4.7 software, they are set to private with public with private addresses entered in 838.
When i set systems to do spnet via the internet problems goes away.