251 Results for:SIP

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Learning Guide: Voice over IP basics

10 May 2004

This guide contains all the VoIP basics and essentials you will need when implementing an IP telephony network. Read More

Black Hat 2007: VoIP security reaches tipping point

By Bill Brenner 01 Aug 2007

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. Read More

VoIP turns up the heat on firewalls

By Eric Parizo 11 Sep 2005

New research shows that many organizations are increasingly concerned about VoIP security and plan to augment their firewalls within the next year, changing the landscape of the firewall market. Read More

Avaya solves fragmented presence problem with federated presence server

By Shamus McGillicuddy 18 Mar 2008

Avaya launches Intelligent Presence Server, which solves the problem of fragmented presence within an enterprise. Read More

VoIP/IP Telephony vendor security solutions

By Gary Audin 25 Jun 2007

Are vendors' VoIP security features all you need, or is it prudent to buy additional security tools to lock down your network? Read More

VoIP performance testing fundamentals

24 Jun 2007

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 ... Read More

Case study: How CERN scientists collaborate with Vidyo

By Jennifer Scott 01 Nov 2013

The European Nuclear Research centre moved from an internally developed video conferencing system to embrace SVC technology from Vidyo Read More

VoIP performance testing fundamentals

07 Jun 2007

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 ... Read More

VoIP hacking exposed in new book

18 Dec 2006

VoIP hacking is a reality, and in a new book, two VoIP security experts outline the tools and tricks to avoid a system-crushing hack. Read More

Securing VoIP Networks Chapter 7: Key Management Mechanisms

10 Oct 2007

Key management is a fundamental part of protecting Internet multimedia applications like VoIP, but the protocols can be difficult to design. Read More