5.7. Operating without OSV Desk Phone 
OpenScape Mobile Pro provides the option to operate without a desk phone (i.e., the ONS is not registered).The ONS subscriber may use its mobile client as a primary phone for making and receiving calls, without having a physical desk phone.
INFO:
It is assumed that an ONS subscriber with registered secondary line appearance(s)
also has a prime line which is registered.
In case the user’s desk phone is not registered, the OpenScape Mobile Pro Application
supports
the following scenarios for moving (handover) a call:
-
If your OpenScape Mobile Pro is established over Wi-Fi with VoIP support:
-
Tap the Move button to display the call slider
-
Since the OSN is not registered, the Select call target screen will show the desk phone button grayed out and not selectable
-
If you try to tap on the desk phone button, no handover will occur and the slider will be automatically moved back to its previous position.
-
-
If your OpenScape Mobile Pro is established over cell network without VoIP support, after moving into Wi-Fi area:
-
Tap the Move button to display the call slider
-
Since the OSN is not registered, the Select call target screen will show the desk phone button grayed out and not selectable
-
If you try to tap on the desk phone button, no handover will occur and the slider will be automatically moved back to its previous position.
-
Example
There are two additional scenarios related to OSV desk phone:
-
If the user has an unregistered desk phone that registers while the mobile client is ringing, the desk phone button will become selectable.
-
If the user has a registered desk phone that unregisters while the mobile client is ringing, the desk phone button will become grayed out.
INFO:
If a user has a desk phone that is unregistered, the call to the OpenScape Mobile
Wi-Fi device,
due to auto-pilot routing, operates as if the call was sent to a registered
ONS device.
INFO:
If no cell number is configured, then the cell icon is grayed out and not selectable.
When
tapping the cell icon no deflect or handover is possible.
‣ Parent topic: Section 5. Handling Calls