When we examine the past events to identify trends and changes in attacking strategies, we find that spam calls, caller-ID spoofing, and DoS attacks are the most imminent threats to VoIP deployments. Compared to email spam, voice spam will be much more obnoxious and time consuming nuisance for human subscribers to filter out. Since the threat of voice spam could become as serious as email spam, we first focus on spam detection and propose a content-based approach to protect telephone subscribers' voice mailboxes from voice spam. Caller-ID has long been used to enable the callee parties know who is calling, verify his identity for authentication and his physical location for emergency services. Moreover, interconnecting between IP telephony and other Circuit-Switched CS legacy telephone networks has also weakened the security of caller-ID systems.
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Research institutes are devoted and played a crucial role to deploy IP protocols in mobile communication core network and services. The IMS concept is to merge alltelecommunication technology, wireless and wired networks under the All-IP environment to provide a more extensible, synchronized, interactive multi-media service. Being one of the larger vendors for call and contact-centers, Avaya estimates it has shipped well over 6 million contact-center seats over the last dozen years. Multimedia information administration and storage mainly focuses on empowering database frameworks to manage interactive media content at a very high level of abstraction. Then we discuss, how the part of the database framework converges with the part of media servers that is an extension of traditional file servers with isochronous multimedia. Experience and Connectivity I. Experience of Company II.
Essay on The IP Multimedia Subsystem
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IP Multimedia Subsystem or IMS is a standards-based architectural framework for delivering multimedia communications services such as voice, video and text messaging over IP networks. Download Solution Brief. The IP Multimedia Subsystem architecture decomposes the network into a distinct application, control and transport layers with standardized interfaces to promote scalability, flexibility and extensibility. An oversimplified IP Multimedia Subsystem architecture is depicted in the figure below. IMS enables secure and reliable multimedia communications between diverse devices across diverse networks.