To increase the usability we have developed the addon “Skype Caller ID”. In the normal use of Skype for Business, from the moment of “lock screen” usability is limited. In the lock screen itself, one is not informed whether there have been calls and from which callers they have been received.
In addition, the signaling in the lock screen is not intended as a feature. To avoid this circumstance for Skype for Business users, many of our customers already use “Skype Caller ID”.