Greg sounds like the battery has gone kaput. This means the database is gone and unless you or someone there has a backup and is familiar with the phone system then your out of luck.
DND how do we know that this is the customer's gamble? Maybe they were told that moving the phone system is an easy thing and were led to believe that the people who moved it were skilled in telephone system programming and installation. Either way theres a lesson to be learned here for sure :nono:
