HEATKEYS

Resources from the authors, creators, innovators, & leaders of technology - home to leading publishers Addison-Wesley Professional, Prentice Hall Professional, & Sams.

Texas Instruments (TI) is a global analog and digital semiconductor IC design and manufacturing company.

The Microsoft Support home page is your support portal for Microsoft products. Download updates and find top issues, error messages, and troubleshooting tips for Windows XP, Windows Vista, Windows 7, Office 2010, the 2007 Microsoft Office system, and...

Enabling network and VAS solutions with Session Border Controllers, Media Servers and Video Gateways.

Visit the new XFINITY customer site to get the most out of your subscription. Watch TV online, check email, pay bill and upgrade Comcast subscription.

Cisco (NASDAQ: CSCO) is the worldwide leader in networking that transforms how people connect, communicate and collaborate.

The California Public Utilities Commission serves the public interest by protecting consumers and ensuring the provision of safe, reliable utility service and infrastructure at reasonable rates, with a commitment to environmental enhancement and a he...

Discounted Avaya small business telephone systems and digital phone equipment from Carroll Communications. VoIP PBX enabled systems including the award winning IP Office, Partner ACS and the new SIP One-X Quick Edition.

Zilog

In Depth Tutorials and Information

Asterisk is free software that transforms a computer into a communication server. Asterisk lets you build applications like PBX, VoIP gateway, IVR and ACD.