Definition of VoIP
What is VoIP?
IP Telephony, also called 'Internet telephony', is the technology that makes it possible to have a voice conversation over the Internet or a dedicated Internet Protocol (IP) network instead of dedicated voice transmission lines.
|
|
VoIP
Wireless Voiceover Internet Protocol - Changing How Healthcare Works ~ Sponsor
Watch this ForwardView webshow to see how these institutions are relying on Voiceover Internet Protocol (VoIP) to ensure the timely flow of information between doctors, nurses, and clinical technicians. Nowhere is instant communication more mission-critical than in healthcare institutions, with their large number of scattered, mobile staff. This webshow was featured in ForwardView, the premier IBM eMagazine that provides growing businesses with the latest news and trends at the nexus of business and IT. It's full of thought leadership and marketplace insight applied to real business problems.
Read the Article
|
PacketSaver: More Efficient, More Reliable VoIP ~ Sponsor
Voice over Internet Protocol (VoIP) offers a wide range of benefits to both enterprises and communications/network service providers. These include lower costs, unified management of voice and data infrastructure, and - perhaps most importantly - the ability to deploy a new generation of converged voice/data applications. Although use of VoIP is growing rapidly, several factors have inhibited more rapid adoption across all market segments. These factors include concerns about maintaining consistent voice quality over IP networks, especially during periods where other types of traffic on the IP network suddenly 'spike' - potentially putting the squeeze on voice packets and momentarily threatening voice quality.
Read the Article
|
How to Buy a Phone System for VOIP ~ Sponsor
Considering a new phone system for your business? The Phone System Buyer's Guide from VoIP-News provides you with all of the information you need to make a more informed decision. The Guide helps you understand what features every business should look for from a modern phone system, how these phone systems are helping businesses improve productivity; and whether, as some vendors claim, it's possible to reduce your phone bill by up to 60%.
Read the Article
|
Security Considerations for Voice Over IP Systems
Administrators may mistakenly assume that since digitized voice travels in packets, they can simply plug VOIP components into their already-secured networks and remain secure. However, the process is not that simple. This publication explains the challenges of VOIP security for agency and commercial users of VOIP, and outlines steps needed to help secure an organization’s VOIP network. VOIP security considerations for the public switched telephone network (PSTN) are largely outside the scope of this document.
Read the Article
|
Blue Box: The VoIP Security Podcast 7344 min.
SIP security issues at IETF 70, Skype security, vulnerabilities in Cisco and Nokia phones, Vietnam's cyberdissidents, VoIP security news, listener comments and more...
Listen to the Podcast
|
VoIP - The Evolving Solution and the Evolving Threat
Enterprises wishing to exploit the advantages of switching voice calls to the IP network must understand that maintaining security of those packets is an integral part of the overall VoIP deployment. Focusing on quality of service and throughput is certainly important, but ensuring the integrity of voice transmissions and guarding against malicious activities and access is crucial to the success of the evolving solution.
Read the Article
|
Security Issues and Countermeasure for VoIP
At first, this paper gives a brief introduction of VoIP techniques: the network structure, network components, protocols and standards, data handling procedures, quality of service requirements, etc. Secondly, the paper discusses the VoIP specific security threats using the principle of CIA (Confidentiality, Integrity and Availability). The countermeasure to mitigate these threats is also discussed. At last, the paper proposes some common practice to secure VoIP networks.
Read the Article
|
IPSec in VoIP Networks
IPsec is widely used to provide secure access to corporate private networks. IPsec is specified by TISPAN and 3GPP for both access, core and interconnect applications. However, IPsec and the current range of corporate network edge Network Address and Port Translators (NAPTs) are not compatible with the Next Gen services provided by VoIP architectures. This technical note describes the problems and the solution defined by TISPAN.
Read the Article
|
Two attacks against VoIP
This purpose of this article is to discuss two of the most well known attacks that can be carried out in current VoIP deployments. The first attack demonstrates the ability to hijack a user's VoIP Subscription and subsequent communications. The second attack looks at the ability to eavesdrop in to VoIP communications. Although VoIP is implemented using various signaling protocols, this article focuses on attacks associated with the SIP (Session Initiation Protocol), an IETF standard (RFC 3261). The two attacks, among others such as DoS, have been discussed in various research papers but they haven't been acknowledged publicly as active attacks.
Read the Article
|
Internet Protocol Telephony Voice Over Internet Protocol Checklist
This document will describe the proper procedure to follow to register and update the IA status of voice and/or video / real time services (RTS) systems and devices in VMSv6. For the purpose of this document, we will use RTS to refer to any voice/video/RTS system or device. This includes all types of telecom switches or video systems, whether they are TDM or IP based, as well as any supporting system or device.
Read the Article
|
|
|
Page: 1 2 3 4 5 6 7
Members currently browsing this category:
|
|
