USB Internet phone handset for VoIP

Overview

The TigerJet USB handset reference design enables a phone handset to be interfaced via the USB to Windows. Our design uses a standard phone codec as the audio interface. The only additional active component is the Tiger560 chip, a small number of low cost passives completes the design and adds up to a very elegant solution.

Using the Tiger560 which has been designed to conform to Microsoft's USB Audio specification enables the use of the Microsoft USB audio driver that is provided as part of Windows (XP, 2000, 98). The audio from the handset is available in Windows as a standard sound device, so all of the popular Internet phone applications such as MSN Messenger, Net2phone etc. are supported.

By using a regular handset to place Internet phone calls, the inconvenience and problems of attempting to use the existing PC sound card as a speaker phone are avoided. In addition the use of the USB enables quick and easy installation.

Our USB Internet phone handset makes the experience of placing an Internet phone call exactly the same as if you are placing a regular call. 

TigerJet can provide a full set of manufacturing information to enable you to quickly start production.

For a solution that adds a keypad to this design please check out our USB Internet handset with keypad.

Key features;

•    USB 1.1 compliant

•    USB audio driver written and supported by Microsoft for;

  • Windows XP

  • Windows 2000

  • Win98 (original, SE and ME)

Manufacturing support

•    Evaluation card

•    Schematics (OrCAD and Acrobat)   

•    IP Phone Center application

Block diagram

Evaluation board photo

The evaluation board is a very compact design that has the Tiger560 chip on one side and the connectors and the codec on the other side.

The board layout supports a captive USB cable or a USB socket.