The Cisco IP Telephony focused certification tracks validate proficiency in designing, installing, and supporting a multiservice network solution. A solid understanding of quality-of-service (QoS) features and implementation is essential for all of the Cisco IP Telephony focused certifications and is also a core component of...

It may be a while before Internet telephony with VoIP (Voice over Internet Protocol) reaches critical mass, but there's already tremendous movement in that direction. A lot of organizations are not only attracted to VoIP's promise of cost savings, but its ability to move data, images, and voice traffic over the same...

• IP telephony works today. This is not new, unproven technology. Thousands of customers have implemented IP...

Since its birth in 1996, Session Initiation Protocol (SIP) has grown up. As a richer, much more robust...

A systematic approach to understanding the basics of Voice over IP

* Understand the basics of PSTN services and IP signaling protocols, including SS7
* Learn how VoIP can run the same applications as the existing telephony system, but in a more cost-efficient and scalable manner
* Delve into such VoIP topics as jitter,...

Offering an open development environment, Android represents an exciting new opportunity to write innovative applications for mobile devices. This book provides you with a hands-on guide to building these applications using the Android software development kit. It...