MarkSpace and TreoCentral has developed a Call Group Manager application for the Treo and Visor Phone.

The application lets you assign different ring tones to the different groups that already exists in your address book. When a call comes in, the software matches the incoming caller id number to the address book's group entry and plays the assigned ring tone.

We are currently conducting a private beta test of this application. If you are interested in participating in the beta test please e-mail marcus@visorcentral.com. Please include your VC username in the e-mail.