VIA now offer the option to manipulate the inbound Caller display for Ring Group Calls.
The options are as follows:
1) Default - This shows the callers CLI only.
2) Prefixed - This shows the callers CLI with a 3 letter prefix.
3) Fixed Text - This allows you to set anything you like to display for a particular Ring Group.
Note: If you are using Skype for Business 2015, the display will not show the "Other: +441234..." section, the display will show "is calling you.". Skype for Business 2016 does show the callers CLI.