Addressing the growth of IP telephony service offerings within the corporate and residential realm, IP Telephony Interconnection Reference: Challenges, Models, and Engineering examines the technical and regulatory issues related to IP telephony interconnection at the large scale. It describes business and interconnection models, reviews emerging architectures such as IMS and TISPAN, identifies commonly-encountered issues, and supplies solutions to technical issues. The authors offer a detailed overview of SPEERMINT activity and proposed architecture, the current work undertaken in i3 Forum, and the use of ENUM for interconnection-describing practices in both fixed and mobile networks. Among the first books to present information on interprovider communications and interconnection of IP telephony clouds, the text supplies a clear and up-to-date picture of the VoIP protocol jungle.Provides detailed guidance on how to implement VoIP interconnect servicesPresents an overview of deployed architectures in fixed and mobile networks used for interconnection and roaming purposesEnumerates regulatory issues with a focus on Europe and the United StatesProposes interconnection modelsSuggests viable solutions to technical issuesThis reference supplies an overview of interconnection practices in PSTN/mobile. It proposes solutions for overcoming service engineering issues and includes a set of recommendations to ease the proliferation of interconnection agreements and schemes. Keeping you up to speed with recent developments in IP telephony, the book facilitates the understanding of the technical and regulatory requirements needed to provide global services to your customers and successfully navigate the upcoming migration to a completely IP-based model.