NEC Univerge SV8100 Installation Manual page 20

Expand PBX's and the PBX name / Devices and you will see the list of different items. You can then
choose a device to change.
For example on extensions to edit the name of an extension, click 'Create or Edit an Extension.' The
list of extensions will be displayed and you can change the names of extensions or their group
membership. When you have finished, click OK to save the changes.