How do I backup the TNG4* database files?

[Belinda Frick]

To backup the TNG system, you may backup the entire TNG folder located in
/opt/datatex/ whenever necessary and restore the folder to same location.

The tngusers.dat, tngtrunks.dat, tngextension.dat, tnggroups.dat and tngdepartment.dat
files located in /opt/datatex/tng/data contains all the user, trunks, department,
extension and group information.