When a message is left for a group, Vocera prompts 'You have a message from <Sender>' and gives no indication that the message was left for a group. It would be more useful if the prompt told you the message was left for a group from a phone. IE: 'You have a message for <Group> from <Sender>.' This would prevent users from mistakenly thinking that a message was left directly for them and not a group.
Saying the the name of the called group was added to Voice Server 5.3.0.