Global Crossing has saved some $3.6 million in internal telecommunications costs during the last five years
- while expanding and enhancing communications tools for its employees. This whitepaper identifies the direct and indirect roles that VoIP technology played in this effort, as well as the contribution from IP-based collaboration capabilities.

Unified Communications - Managed Hosted IP Telephony Services - shared services for Government
Government organisations are under pressure to achieve the economies and efficiencies detailed in the Lyon’s Review and the Gershon Report. Furthermore the subsequent “Transformational Government: Enabled by Technology” strategy has highlighted some key technology-enabling targets as a further focus in achieving improvements to services. The sharing and convergence of infrastructures and mobile and flexible working are highlighted as key performance improvement areas through which targeted economies and efficiencies can be delivered.

Global Crossing has been working towards creating IP convergent services that can be delivered with greater ease and simplicity, Global Crossing’s Unified CommunicationsTM suite for Government is an example. The suite is built around hosted IP telephony in addition to some efficiency-enabling solutions such as unified messaging, and presence management.

The aim of this paper is to introduce the concept of Hosted IP Telephony Service and identify some key benefits enabling Government efficiencies.

Realization of IMS Applied to Converged IP Services - A Discussion Document
Today's Internet Protocol Multimedia Subsystem (IMS) environment is one approach to delivering multimedia applications over IP networks. The generic architecture defined by the 3rd Generation Partnership Project (3GPP2) standard is meant to converge existing and future applications, features, and content types, as well as disparate access technologies, such as mobile cellular, WLAN, WiMAX and wireline broadband. Through research and testing, Global Crossing has concluded that IMS can provide significant advantages in three key areas. The company's work in IMS technology is fueled by the growing perception among customers and in the industry that the IMS environment will ease the delivery of multimedia applications in IP networks. Global Crossing is committed to finding a solution that makes the best use of the technology for the best advantage to its customers.

IP Convergence - A Three-Part Series
Today, convergence is driven by business requirements beyond mere cost-savings. It has a much wider scope -- enterprises now can use converged technology to improve their competitive advantage, streamline their internal operations and enhance customer experience. This three-part series takes an in-depth look into the drivers and challenges enterprises encounter when they implement converged solutions, and offers insights into how they might meet those challenges to possibly achieve their technical and financial goals.

Implementing Convergence
This white paper outlines, in case-study form, how Global Crossing is using IP convergence technologies to enhance corporate efficiency and reduce its operating costs. During the first year Global Crossing put these technologies to work, it saw a 20% cost savings on internal communications. The paper examines the business drivers, implementation challenges and options an enterprise should consider as they migrate to a converged network and services environment. Today, the benefits and challenges of convergence go far beyond those associated with VoIP and cost savings. The paper also takes an in-depth look at a Converged Services Model, which uses an end-to-end services environment to consolidate voice, video, data and rich media network applications on a single, secure IP-based network.

Defense In Depth
In 2006 and beyond, global networks will encounter a substantially more challenging security landscape than at any other time in history. And that's the good news. The bad news is that all signs point to a continual rise in intensity and frequency of attacks on network infrastructures and on voice, video and data applications -- and an increased need for functions, capabilities and planning to combat them. Global Crossing has developed a comprehensive security strategy to protect network assets and customer information. The strategy implements multiple, independent and interlinking layers of security to provide greater protection than each of the controls provides individually.

VoIP Architecture
The fundamental objective of Global Crossing's Voice over IP (VoIP) architecture is to provide highly efficient and carrier-class business solutions to Enterprise and Carrier customers. This paper describes in detail how the company is using its global, converged packet-switched network and services platform to develop and provide IP-based voice services that can be delivered via SIP or traditional TDM-based signaling. An early adopter of VoIP technology, Global Crossing is striving to maximize technology migrations for its customers.