6.4.2. Ringtones 
This option allows you to utilize and set different ringtones (per device) for the
incoming
OpenScape Mobile Pro calls. In order to select a specific ringtone, tap
Ringtones option and then choose and hear (as a preview)
one of the available ringtones. Currently selected OpenScape Mobile Pro specific
ringtone will be displayed along side of the Ringtones
option. If no OpenScape Mobile Pro specific ringtone has been selected, the
currently selected native ringtone will be displayed and played during the incoming
OpenScape Mobile Pro call.
INFO:
The OpenScape Mobile Pro specific ringtone does not affect a custom ringtone
per Contact (i.e. the ringtone selected under the phone's native contact
settings).
-
All incoming cell phone calls (i.e. calls made via the user's mobile carrier) use the native device ringtone.
-
If an incoming OpenScape Mobile Pro call is detected and the calling party number is located in the Contacts list (Phone Address Book) having pre-configured ringtone set, then the OpenScape Mobile Pro application plays that pre-configured ringtone until the call is answered or cleared before answered. Otherwise, the current OpenScape Mobile Pro specific ringtone is played.
‣ Parent topic: Section 6.4. Advanced Settings