Additional Details ------------------------------ Product description: Catch-A-Call puts your Internet connection on hold while you take a call or fax. It's easy to use and install, and is compatible with any computer or browser. There's no software to install and it does not affect the speed of your modem. Internet service can be put on "hold" for an average of 20 to 30 seconds. Includes AC power adapter. Call Waiting service required for operation. Product Features Works with any computer and operating system Caller ID and voice mail compatible Requires only 1 phone line Incoming call indicator Simple to connect; 1-year warranty Clam shell Package UPC: 834844000236