The OSD factory default for an inbound call on a Polycom VVX Business Media Phone is to present this as a full screen information:
Example VVX600:

Example VVX410:

UC Software 5.2.2 or later added a new Parameter:
<web up.osdIncomingCall.Enabled="0" />
If the above Parameter is added the new screen layout is as follows:
VVX600

Additional call

VVX400

Additional call

----------------
If official support is required please check how to phone or open a case here
----------------
The title Poly Employee & Community Manager is a community setting and
does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.
----------------
⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓SIGNATURE ⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓⇓
Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge.
Please also ensure you always check the VoIP , Video Endpoint , Microsoft Voice , PSTN or other FAQ's in the different sections