Voicemail - Dial out from Voicemail to Operator
It would be nice to dial 0 at a users voicemail and be transferred to the operator. This way, if the caller does not want to leave a voicemail but speak to a live person, they can simple back out by pressing 0 instead of dialing back in. Most phone systems have a similar feature, would be great for Skype for Business to adopt this.
Edward Jorczyk commented
Azure Voicemail is missing most of the functionality that was present in Exchange Unified Messaging. This is a huge failure on Microsoft's part.