Tips

Tips

• SIP interoperability and testing

  Session Initiation Protocol (SIP) is a signaling protocol typically used for telephony, instant messaging and Internet conferencing. This article discusses the interoperability and testing being done to support this protocol.  Continue Reading

• Product review: USB Cordless DUALPhone provides easy Skype access

  The USB Cordless DUALPhone is a good solution for small to midsized businesses looking for a compact, do-it-all cordless Skype/POTS handset. This advanced IP telephone is absurdly easy to configure, install and deploy. Learn more about its features ...  Continue Reading

• CDP and multi-vendor networks don't mix

  Cisco switches and CDP go hand-in-hand, but when non-Cisco switches and CDP meet, interesting things happen.  Continue Reading

• Defining traffic telecommunications style

  There are three types of traffic: voice, data and image -- each with its own set of requirements for transmission. Find out here how these different types of traffic are quantified.  Continue Reading

• Turning analog phones into VoIP phones

  How an ATA or broadband phone works and what kind of features and performance you can expect from them.  Continue Reading

• IP telephony implementation planning

  Expert advice breaks down a successful IP telephony implementation into two distinct and easy to understand steps.  Continue Reading

• The trouble with 911 and VoIP

  A look at the issues involved in the VoIP/911 dilemma.  Continue Reading

• Working with the Layer 2 data link layer in an IP telephony deployment

  This IP telephony deployment article provides solutions to performance issues in Layer 2, the data link layer.  Continue Reading

• Learn IT in 10 easy steps: VoIP

  This handy guide to VoIP provides you with an overview of the technology, including key terms, trends, challenges and more.  Continue Reading

• System components of VoIP

  This is the second tip in a series excerpted from a report by Ohio State University. The report analyzes issues and challenges in the evolving VoIP technology.  Continue Reading

• Introduction to Internet telephony

  This is the first tip in a series excerpted from a report by Ohio State University. The report analyzes issues and challenges in the evolving VoIP technology.  Continue Reading

• Probing to maximize MTU efficiency and deliver QoS

  A method for increasing MTU size to improve QoS.  Continue Reading

• Policing and shaping within QoS

  Learn about the policing and shaping methods within QoS that allow IT professionals to smooth traffic flows for VoIP transmission.  Continue Reading

• QoS congestion avoidance techniques to clear way for VoIP

  Learn about QoS congestion avoidance techniques that you can use to clear the way for VoIP.  Continue Reading

• VoIP and IP telephony in IT certifications

  A look at some of the certifications that cover VoIP and IP telephony.  Continue Reading

• DHCP for VoIP

  Learn how to set up DHCP for Voice over IP (VoIP) in this article.  Continue Reading

• Don't forget to use multicast

  The benefits of using multicast.  Continue Reading

• Survivable remote site telephony

  Fault-tolerant telephony solution for smaller remote sites.  Continue Reading

• VoIP? Think about voice mail

  Consider what the implications for voice mail are when you use VoIP.  Continue Reading

• A case of the jitters

  Testing for specific problems affecting VoIP.  Continue Reading

• Watch out for asymmetrical routing

  Asymmetrical routing can cause trouble that's tough to diagnose.  Continue Reading

• Enable the hookflash relay

  How to enable it. You'll need it.  Continue Reading

• VoIP user experience questionnaire

  VoIP user experience questionnaire  Continue Reading

• Tune spanning tree for VoIP

  Tuning settings to account for the vagaries of spanning tree protocol.  Continue Reading

• Troubleshooting voice

  Codes for determining what happened when something goes wrong.  Continue Reading

• Testing VoIP connectivity on IOS

  An undocumented command that makes testing easy.  Continue Reading

• Private line automatic ringdown

  How you can connect two phones to one another exclusively via VoIP.  Continue Reading

• Check for full duplex capability

  How to find out if hardware supports full duplex record and playback.  Continue Reading