Unity UC

Unity UC is a VoIP softphone that extends the functionality of the Unity VoIP platform to mobile devices. With Unity UC, users are able to maintain the same identity when making or receiving calls from any location, regardless of their device. They can also seamlessly send an ongoing call from one device to another without disruption.
Unity UC grants users the ability to manage contacts, voicemail, call history and configurations in a single location.

***NOTICE*** You must have an existing account for this app to work. Click the "Developer Website" further down for more more information.