We recently bought 9 Polycom Trio 8800 with Visual+. We updated the UC Software version to 220.127.116.1133.
Since these devices are being used ONLY for internal video conferencing and our on premise Skype for Business has no external SIP-trunk, we will only be using the Skype for Business functionality and NOT the phone functions.
We found a solution to remove most buttons we don't need here and here.
There is however one function (reachable in 3 different ways) which we can't seem to disable : "Dial a Number".
1. This function is shown under the menu-button
2. It is also accessable via the contacts page where you have the same icon in the top-tabs.
3. In the bottom line on the home screen, there is a blue phone-icon with the devicename and when you tap this icon, you also reach the same function.
We would like to completely disable this function or hide all 3 ways of getting there. Obviously we need the contacts-button because we still need to connect to the other devices (via the address book) and the company skype users (also via the address book).