.. _device_models:

Device Models: Overview
-----------------------

With the Device Models menu item, you can view details about the devices by model
in the selected hierarchy. Like the Overview Tool, this can be useful to help you
see where devices have moved as a result of the Overbuild process. When you select
a device model type in the menu, a table presents you data about the devices of
that model type in the hierarchy: the device names or identifiers, their device
pools, their hierarchies at and below the one currently selected, and other data
that varies with the device model selected.

Within a device model, you can modify, delete, and export the individual devices
by selecting them. Additionally, you can change settings all at once for all the
devices in a device model by selecting the **Select All** check box, located at the
top-left on the table header, and choosing **Action > Bulk Modify**.

.. caution::

   We do NOT recommend that you directly edit the device models in this menu,
   but use the other menus in VOSS Automate such as the Subscriber Day 2 menus. The
   Device Models menu items should be used for manually moving device models
   that the Overbuild tool cannot move or that need additional manual moves
   after Run Overbuild is executed.

For CUC models, there are two system users, operator and undeliverablemessagesmailbox,
which will remain at Customer level. All associated CUC device models for the two
system users will remain at the Customer hierarchy and will show in the device model
counts and device model lists at the Customer hierarchy.

For call handler device models, there are 5 default instances that remain
at the Customer hierarchy:

* Goodbye (a CUC system default call handler)
* Opening Greeting (a CUC system default call handler)
* Operator (a CUC system default call handler)
* operator (the system user 'operator' call handler)
* undeliverablemessagesmailbox (the system user  'undeliverablemessagesmailbox'
  call handler)

These 5 call handlers remain at the Customer hierarchy and appear in the device
model count and device model lists for call handlers at the Customer hierarchy.

These device models also allow you to add device instances. Note that
adding device instances here in the Overbuild menu is not recommended.

* CUCM CtiRoutePoint
* CUCM DirectedCallPark
* CUCM Phone
* WebEx User