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One Click Management for VoIPhot!

15.05.2007

Codima Toolbox delivers unrivalled pre assessment and post deployment VoIP testing and readiness for VoIP networks from beginning to end. This includes network pre assessment tools, traffic simulation, post deployment monitoring and troubleshooting combined with modules for Flow analyzing, RTP analyzing and Call Playback as well as inventory and visual mapping tools. Flexible and scalable Codima Toolbox is a set of tools easy to integrate, combine and scale ensuring successful VoIP implementations.

Homepage: http://www.codimatech.com

Ingate Systems: SIP Trunking Benefits and Best Practices hot!

19.06.2007

SIP Trunking Benefits and Best Practices By Janne Magnusson, Vice President, Product Management IngateÂ® Systems A complete guide to SIP trunks, this whitepaper provides a comprehensive overview on the basics of SIP trunking, including a discussion of infrastructure needs and deployment issues and solutions. In-depth sections dedicated to interoperability, security and quality and reliability issues are also included. Editorials from ShoreTel, Level 3, Cbeyond/SIP Connect and Ingate provide a unique look at the perspectives from the IP-PBX, ITSP and other thought leader points-of-view. SIP trunks can lower telephony costs and deliver rapid return on investment (ROI). They also offer the opportunity for enhanced communications both within the enterprise and with vendors, customers and partners. While some see SIP as just voice, SIP trunking can also serve as the starting point for the entire breadth of realtime communications possible with the protocol, including Instant Messaging, presence applications, whiteboarding and application sharing. Adding their unique insights to the white paper are editorials by: - ShoreTel, Inc. â€“ â€œDeveloping a Working Solution End-to-Endâ€ - Level 3 â€“ â€œA Service Providerâ€™s Perspective on SIP Trunkingâ€ - Ingate Systems â€“ â€œWho Is Listening to My Calls?â€ - Cbeyond â€“ â€œSIP Connect: An Industry Collaboration Success Storyâ€

Homepage: http://www.ingate.com/files/white_paper_What_is_SIP_Trunking_A.pdf

Why more bandwidth can be a really BAD thinghot!

04.12.2006

Opinion piece on why ADSLs/+ is not a service naturally compatible with VoIP.

Homepage: http://www.vcomm.co.uk

sbmain_elab_NAT_for_sip_centerhot!

05.04.2006

NAT traversal with SIP

Homepage: www.sipknowledge.com/elearn.html

NexTone SBC Attack Performance Test (CT Labs)hot!

11.09.2006

CT Labs was commissioned by NexTone to verify SIP call-handling performance of the NexTone MSC session border controller (SBC) product while subjected to various real-world attacks. The test involved generating high levels of valid real-world SIP-based VoIP traffic while launching attacks against the SBC, including denial of service (DoS) and other malicious attacks designed to disrupt SIP-based services.

Homepage: www.ct-labs.com

Navigating the Complexities of IMS (Empirix)hot!

07.09.2006

IP Multimedia Subsystem (IMS) is moving the communications industry towards a new business model. No longer are proprietary solutions with long development cycles and network-centric applications the solution for the network equipment manufacturer or service provider community to enable feature-rich services. Traditionally, end user, network, testing/monitoring, and maintenance applications have been dictated by the access and network infrastructure equipment capabilities and feature sets. These applications have been integrated into the legacy equipment and the ability to customize has been extremely limited. However, these applications due to their proprietary and static nature and long development timeframes are very reliable and provide a high quality end user experience. This quality and reliability needs to be duplicated in the IMS environment and applied to real-time, next-generation applications but in a much quicker timeframe across diverse networks and devices.

Homepage: http://www.empirix.com/

Genesys IP Media eXchange Testing Reporthot!

11.09.2006

CT Labs was commissioned by Genesys to evaluate the call-handling performance of the IP Media eXchange (IPMX). The IPMX compo-nents were deployed on one, two, and three Windows-based servers, respectively, for each of the three tests described in this report. All VoIP calls were generated using an automation script running on the Empirix Hammer FX-IP platform, using the SIP protocol. In the first test, the IPMX was deployed on a single server. The results of this test reveal that a single high-performance server with 150 agents configured can effectively process in excess of 250 simultaneous callers at a rate of 8 calls/second, with half listening to music on hold, and the other half connected to agents.

Homepage: www.ct-labs.com

Session Initiation Protocol (SIP) and MCI AdvantageÂR White Paperhot!

01.06.2003

Global IP communications over the Internet is probably the most significant development since the emergence of telephone networks over 120 years ago. In this paper, we explore the new communication services enabled by the Internet, including examples of new and potential services.

QoS Testing in the VoIP Environment (Empirix)hot!

14.03.2006

In recent years, the business world has reaped tremendous benefits from the many exciting products and applications made possible by the marriage of data and voice technologies. Now, the efficiencies and enhanced services resulting from that revolution are being enhanced by the magnitude of change possible as data networks become the transport for voice. IP Telephony, or Voice over IP (VoIP), is the exploding new technology enabling voice to be carried over IP-based, packet-switched local and wide area networks.

Now the efficiencies and enhanced services resulting from that revolution are being eclipsed by the magnitude of change possible as data networks become the transport for voice. The open standards approach adopted within the voice over IP world has meant that public and private network operators are now able to remove their dependence on buying everything from one vendor that was a fact of life in the closed/proprietary nature of the traditional circuit- switched world. Other advantages that have attracted a lot of attention include the ability to bypass the PSTN and its toll charges,applications made possible by merging voice with Internet data,lower operating expenses,and network service presence.

Robustness testing of SIP implementations (Codenomicon)hot!

18.11.2003

Introduction

SIP[4] will be a part of future IP telephony infrastructure, raising new security concerns and issues. As past experience has shown, a majority of these problems are due to software vulnerabilities. One class of software vulnerabilities is introduced during implementation, in the coding process, due to non-robust handling of input data. An example listing of vulnerability types and failures is in Table 1.

One way to counter these vulnerabilities is to do white box testing and to perform code audits. This white paper discusses this process.

Session border controllers (Acme Packet)hot!

07.07.2003

Regardless of opportunity, interactive communication over IP networks must be able to reach anyone, anywhere, anytime to maximize its value. To paraphrase Metcalfe's Law: the usefulÂ-ness, or utility, of interactive cormnunication equals the square of the number of users. New interactive communication services and applications, therefore, must ultimately span business and consumer, wired and wireless networks.

Consequently, simply building standalone voice, video and multimedia over IP network islands is not sufficient. They must be built and interconnected in a way that ensures security and peak performance end-to-end. Businesses and consumers will be satisfied with - and pay good money for - nothing less.

Big Communications Picture (Siemens)hot!

02.02.2004

This white paper provides an overview of the companyâ_Ts HiPath portfolio, the focus being on HiPath OpenScape, which is a suite of presence-aware, real-time communications software. HiPath OpenScape is a groundbreaking addition to the HiPath solutions portfolio and an important development in its own right. Additional Siemens white papers are available that focus on the portfolio, the HiPath MobileOffice solution and the companyâ_Ts award-winning migration strategy.

Solving the Firewall/NAT Traversal Issue of SIP: Who Should Control Your Security Infrastructure?hot!

17.05.2007

Solving the Firewall/NAT Traversal Issue of SIP: Who Should Control Your Security Infrastructure? Session Initiation Protocol (SIP) has become the signaling protocol of choice for realtime communications, including Voice over IP (VoIP){mosimage}. However, SIP communication does not reach users on the local area network (LAN) behind firewalls and Network Address Translation (NAT) routers automatically. This issue of SIP traffic not traversing the enterprise firewall or NAT is critical to any SIP implementation, including VoIP. Until all firewalls are SIP capable in order to support the wide-scale deployment of realtime enterprise communications, several solutions have been proposed to work around the firewall/NAT traversal problem. Many of these solutions have serious security implications; there are also solutions that allow you to remain in control. The choice of method for traversing firewalls/NATs is, to a large extent, dependent on the answer to the questions: â€œWho should be in control of your security infrastructure: the firewall administrator, the user or a service provider?â€ and, â€œDo we want a solution that is predictable and functions reliably with SIP standard compliant equipment or is it sufficient with a best effort solution that works in certain scenarios and, perhaps, only with a specific operator?â€ This white paper outlines the pros and cons of each solution, so you can make the best decision for your network.

Homepage: http://www.ingate.com

B2BUA: Enabling Class 5 Capabilities in SIP Designs (Radvision)hot!

17.09.2003

Enabling Class 5 Capabilities inSIP Design

SIP Market Overview (Data Connections)hot!

01.09.2004

Executive Summary

Session Initiation Protocol (SIP) is continuing to develop rapidly and it is difficult to keep up with all of its innovations and uses. This white paper is aimed at people who want to understand the concepts and drivers behind SIP adoption, and how it is evolving to face new challenges. This paper summarizes where SIP has come from, how it works, and what makes it such a useful protocol. It then describes how SIP is used in applications including telephony, conferencing and messaging, and how it is being extended to provide innovative services and accommodate the requirements of real-world deployment, where NATs, service level agreements and regulators exist. In covering this broad range of SIP-related topics, it provides a summary of the state of this increasingly important protocol.