5.1.1. How to Make a Call in Callback Mode 
When OpenScape Mobile Pro, which is connected to an OpenScape Voice V9 or above, loses Wi-Fi connectivity, it enters the Callback Mode. In this mode, OpenScape Mobile Pro sends a request to OpenScape Voice to call your cell phone. Once you answer with your cell phone number, the destination is called.
The destination does not see your cell phone number – your desk number is displayed
instead. Your
cell phone is used for the voice part of the call. (The cellular data connection
is used only to request the call.) Once you enter Wi-Fi again, you can use
OpenScape Mobile Pro to swipe the call to another destination.
INFO:
Turning on the Settings option "Use Wi-Fi only" disables this feature.
This is useful if you are roaming with an expensive data plan or you have a
metered data plan that is reaching its limit.
INFO:
The call is billed like a regular ONS call (OpenScape Mobile Pro is based on ONS).
For details on how the CDR records for the call are created, refer to the section
"One
Number Service (ONS)" of OpenScape Voice, Interface Manual:
Volume 1, CDR document.
Step by Step
- From OpenScape Mobile Pro, either:
-
Tap Call History and choose a name/number from the call log.
-
Tap Contacts and choose a name/number .
-
- OpenScape Mobile Pro will request OpenScape Voice to call back your cell phone.
‣ Parent topic: Section 5.1. More on Making Calls