What is the Internet PhoneJack?
The Internet PhoneJack is an audio card designed from the ground up, to improve the quality and performance of Internet telephone applications. When properly used the Internet PhoneJack will provide the user with the following improvements:

• Improved Audio Quality The Internet PhoneJack improves quality by providing full-duplex (two-way) communication eliminating acoustic echo through advanced and easy to use echo cancellation and direct integration to high quality microphone and speaker setups and telephones. The Internet PhoneJack features a new higher-performance Digital Signal Processor (DSP), and full Windows 95/98, Windows NT 4.0. The Internet PhoneJack is H.323 audio compliant, and provides G.711, G.723.1, G.728, G.729a and TrueSpeech audio compression in hardware. The Internet PhoneJack requires a 486-66Mhz or faster computer with an available ISA slot.

• Greater Ease of Use The Internet PhoneJack, combined with the Internet SwitchBoard application, makes it easier to use by providing support for a standard analog (POTS) telephone, touch-tone dialing, speed dialing of Internet addresses, ringing the analog phone when Internet calls arrive, and acting in full compliance with the Windows 95/98 plug-and-play and Windows NT standard for easy-to-use hardware installation.

Improved PC Performance The Internet PhoneJack improves PC performance by taking CPU-intensive tasks like audio compression and echo cancellation away from the host CPU and performing these tasks on the Internet PhoneJack DSP chip. These added performance improvements means that other PC applications like video, spreadsheets, and networking will perform more smoothly during Internet telephone calls.