News

Voice networking and VoIP

August 12, 2007 12 Aug'07
Implementing video on demand

Video on demand (VoD), in at least some of its potential service models, is perhaps the most challenging of all network applications. Implementation of VoD should be should be undertaken in three particular steps.
August 09, 2007 09 Aug'07
VoIP vulnerability threatens data

VoIP vulnerabilities have now reached a level of sophistication that allows hackers to steal, view or delete data.
August 08, 2007 08 Aug'07
NAS appliance specifications

NAS appliances are noted for their convenience, offering dedicated internal storage that is relatively straightforward to identify and manage. The biggest issue for NAS appliances is avoiding network bottlenecks and supporting expansion without ...
August 07, 2007 07 Aug'07
Application-aware storage promises intelligence and automation

Storage professionals overbuy both performance and capacity in an effort to forestall potential storage problems. Tiered storage was one way to address this problem -- matching storage resources and costs with the value of data. Today, storage is ...

August 06, 2007 06 Aug'07
Video networks: The fundamental structure

Video delivery, content network, IPTV, triple play -- these are just a few of the terms used today for video over broadband data networks. This concept of video networks is an increasing challenge, and like most network challenges, this one is ...
August 05, 2007 05 Aug'07
Understanding IMS (IP Multimedia Subsystem)

IMS (IP Multimedia Subsystem) is an emerging architectural framework, based on SIP and IP, for offering multimedia and VoIP services, as well as fixed mobile convergence. This tip explains exactly what the architecture behind IMS.
August 01, 2007 01 Aug'07
Black Hat 2007: VoIP security reaches tipping point

VoIP security is as bad today as it was a couple years ago, industry experts say. But PGP creator Phil Zimmermann thinks his new Zfone software will help turn the tide.
August 01, 2007 01 Aug'07
Cisco knocks out Avaya as IP PBX heavyweight

IP PBX adoption is rising as Cisco and Avaya square off for market dominance.
August 01, 2007 01 Aug'07
Black Hat 2007 preview: Blue Pill under scrutiny

Among the highlights at the year's most anticipated hacker event, vulnerability researchers will challenge Joanna Rutkowska's Blue Pill concept. They'll also pick apart flaws in VoIP, NAC and Web applications.
July 31, 2007 31 Jul'07
VoIP services spell trouble for telcos

The rise of VoIP is paving the way for companies that haven't traditionally sold voice services to do so. Telcos slow to move will be hard pressed to keep up

July 29, 2007 29 Jul'07
VoIP services spell trouble for telcos

The rise of VoIP is paving the way for companies that haven't traditionally sold voice services to do so. Risk-adverse telcos slow to move in this rapidly changing environment will be hard pressed to keep up with more agile competitors.
July 26, 2007 26 Jul'07
Justifying VoIP deployment without cost-analysis

VoIP and unified communications deployments remain sluggish, as network managers look for ways to justify the cost of the infrastructure and system upgrades. Non-financial return on investment (ROI) metrics can be used as a way to augment the ...
July 25, 2007 25 Jul'07
VoIP solution centre answers users' questions

A new VoIP performance management solution center on Fluke Networks' Web site helps IT professionals to answer some of their VoIP network questions.
July 22, 2007 22 Jul'07
Black Hat Las Vegas 2007: Special news coverage

SearchSecurity.com covers all the controversy at this year's show with news, features, podcasts, interviews, exploits and more direct from Las Vegas.
July 19, 2007 19 Jul'07
VoIP performance testing fundamentals

This guide discusses why it is important to run regular VoIP network performance testing and some of the ways it can be done.
July 17, 2007 17 Jul'07
Unified communications infrastructure threats and defense strategies

Unified communications systems promise exciting productivity gains for workers and cost savings for businesses, but many often underestimate the security threats facing them. John Burke outlines the threats facing unified communications and how to ...
July 10, 2007 10 Jul'07
Updating a QoS strategy for VoIP traffic

Learn how to update your QoS strategy for VoIP traffic in this tip from Tom Lancaster.
July 09, 2007 09 Jul'07
Unified messaging system updates company's voicemail

Installing a new unified messaging system helped one company in its daily struggles with an outdated voicemail system.
June 28, 2007 28 Jun'07
SIP fundamentals

Session Initiation Protocol (SIP) will allow true interoperability, eventually enabling every IP-based device and application to communicate seamlessly with one another. This guide discusses some of the basics of SIP, including vulnerabilities, ...
June 27, 2007 27 Jun'07
Instant messaging usage increase highlights need for policies

Instant messaging is a valuable business tool for some enterprises. For others, it's a security risk. Either way, a recent Burton Group report suggests that all companies should have an IM usage policy, even if they haven't deployed IM yet.
June 25, 2007 25 Jun'07
Instant messaging usage increase highlights need for policies

A Burton Group report suggests that all companies should have an IM usage policy, even if they haven't deployed IM yet
June 24, 2007 24 Jun'07
VoIP performance testing fundamentals

VoIP network performance testing can mean the difference between a VoIP system working at a high level QoS and a weak system that runs so poorly customers could take their business elsewhere. This guide discusses why it is important to run regular ...
June 19, 2007 19 Jun'07
Securing the enterprise VoIP perimeter

How to make VoIP work without sacrificing firewalls or network perimeter security.
June 17, 2007 17 Jun'07
VoIP security testing fundamentals

Testing your VoIP security system against all the threats that exist on the network can be a full time job. This guide documents how a VoIP system can be tested and suggest some of the available tools to use -- with a focus on fuzzing tools and ...
June 14, 2007 14 Jun'07
AIIA outlines federal election wish list

The Australian Information Industry Association (AIIA) has released its policy expectations for political parties in the upcoming 2007 federal election.
June 12, 2007 12 Jun'07
VoIP call quality and reporting software improves QoS

Technology developed to power IPTV networks is also helping improve VoIP quality of service.
June 08, 2007 08 Jun'07
VoIP market evolves in 2007

VoIP will see market changes this year as IP PBX sales increase and market leaders shift their focus.
June 07, 2007 07 Jun'07
VoIP performance testing fundamentals

VoIP network performance testing can mean the difference between a VoIP system working at a high level QoS and a weak system that runs so poorly customers could take their business elsewhere. This guide discusses why it is important to run regular ...
June 05, 2007 05 Jun'07
Avaya to merge with Silver Lake and TPG Capital

Telephony giant Avaya will be acquired by a private equity firm.
June 04, 2007 04 Jun'07
Deploying VoIP: Five things every CIO should know

Navigating the complexity of a VoIP migration can be overwhelming. Here are five tips to help steer through the fog of a VoIP deployment.
June 01, 2007 01 Jun'07
Check Point promises more VoIP security, fewer slowdowns

Check Point's enhanced Open Performance Architecture is designed for deeper security of technologies like VoIP without the network performance problems that often come with it.
May 31, 2007 31 May'07
VoIP rush heats up cooling debate

Increased VoIP adoption is putting pressure on data centres' power and cooling requirements
May 31, 2007 31 May'07
Cisco, Nortel frontrunners in Avaya acquisition rumors

Cisco and Nortel are said to be amongst those circling the still-live body of VoIP vendor Avaya, but analysts disagree on which, and why.
May 29, 2007 29 May'07
The wireless future offers plenty of voice possibilities

Farpoint Group's Craig Mathias surveys the future of wireless networks and their ability to carry voice traffic.
May 25, 2007 25 May'07
VoIP advice from the trenches

ITKE, or ITKnowledge Exchange, is simply a cool (and quick) way to get a response to your VoIP-related questions.
May 22, 2007 22 May'07
Mitel acquires Inter-Tel, signaling more consolidation to come

Mitel acquired Inter-Tel last week, signaling a trend toward vendor consolidation in the VoIP market and creating stronger options for SMBs.
May 21, 2007 21 May'07
Mobile instant messaging enhances company's business processes

A mobile IM service acquired by a hosted VoIP provider encourages more companies to enhance their business processes.
May 17, 2007 17 May'07
VoIP security fundamentals

VoIP security is a challenge for IT staff because IP telephony brings with it not only the security problems of data networks but also new threats specific to VoIP. In this fundamentals guide, learn about network security threats and emerging IP ...
May 11, 2007 11 May'07
VoIP, unified communications adoption continue to rise

VoIP and unified communications adoption continue to rise steadily in the enterprise, according to Infonetics Research's latest report.
April 20, 2007 20 Apr'07
Convergence certification provides evaluation standard

CompTIA has developed a convergence certification, designed to validate qualified convergence professionals.
April 18, 2007 18 Apr'07
Convergence certification provides evaluation standard

Voice and data convergence are more prevalent and enterprises are looking for certified professionals to administer the combined networks -- leading CompTIA to develop its Convergence+ certification, designed to validate qualified convergence ...
April 16, 2007 16 Apr'07
How is SIP winning favor over H.323?

What are the similarities, differences and major reasons between SIP and H.323. And why is one winning?
April 04, 2007 04 Apr'07
Wireless VoIP market to grow rapidly

VoIP and Voice over Wi-Fi markets are expected to be strong in 2007 and remain so through 2012.
March 29, 2007 29 Mar'07
VoIP network monitoring improves VoIP deployment

VoIP network monitoring and pre-deployment analysis are becoming more important as VoIP application overlay becomes denser
March 27, 2007 27 Mar'07
VoIP's inherited data security problems

VoIP security problems present a challenge for voice and network staff. This article explains how to secure both your call servers and endpoints, and how best to divide this work between voice and data personnel.
March 25, 2007 25 Mar'07
Basic VoIP network setup

Basic VoIP network setup advice.
March 25, 2007 25 Mar'07
Why is VoIP authentication essential?

VoIP authentication advice.
March 25, 2007 25 Mar'07
VoIP protocols

VoIP protocols -- the strengths and weaknesses of each.
March 19, 2007 19 Mar'07
Power over Ethernet power consumption: The hidden costs

Power over Ethernet (PoE) has many advantages in a VoIP migration, but some companies overlook the amount of power needed to run PoE for VoIP and the costs and cooling requirements that come with it.
March 18, 2007 18 Mar'07
VoIP security worries are plentiful, potent

VoIP creates a new set of security issues for your network, as expert Ed Skoudis explains.