USB Internet phone handset with keypad

Overview

The TigerJet USB Internet phone handset with keypad reference design is based on the USB handset design and uses the Tiger560 controller to scan a standard low cost phone keypad in the handset. The Tiger560 includes all the necessary keyboard scanning circuitry and there is no need to use a separate micro controller. 

Our design uses a standard phone codec as the handset audio interface. The Tiger560 chip and a small number of low cost parts 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.

The handset keypad can be used to dial numbers into IP Phone Center and other popular Internet telephony applications.

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

Our USB handset interface 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.

Key features;

•    Low cost keyboard scanned by the Tiger560

•    USB 1.1 compliant

•    USB audio driver written and supported by Microsoft for;

  • Windows 98 (gold, SE and ME)

  • Windows 2000

  • Windows XP

Manufacturing support

•    Evaluation card

•    Schematics (OrCAD and Acrobat)   

•    IP Phone Center application

Block diagram

Typical Product

The product shown below has been developed by one of our customers and is based on our reference design.