mobile | classic
Dataweek Electronics & Communications Technology Magazine

Follow us on:
Follow us on Facebook Share via Twitter Share via LinkedIn


Electronics Buyers' Guide

Electronics Manufacturing & Production Handbook 2019


Better QoS essential for the long-term success of voice/video/data over IP
20 April 2005, News

The data, voice and video over IP segment is likely to find itself pitted against public switched telephone network (PSTN) despite its ability to achieve greater cost and productivity savings. This is largely due to the security standards and quality of service (QoS) that still need to match up with those offered by traditional telephony networks.

As opposed to conventional telephony that provides 99,99% reliability, the Internet is prone to serious security vulnerabilities such as viruses, worms, denial of service, eavesdropping and hacking. In addition, since several mission-critical media contents are transferred over IP networks, reducing security threats has become all the more pertinent.

"Since end users give very little importance to the underlying network, IP functionalities need to have a QoS, which is on par with or better than what is available over traditional telephony networks," says Technical Insights research analyst, V.R. Yoges.

While a traditional telephone network uses a dedicated end-to-end connection for the purpose of a single call, IP networks use permutations and combinations in allocating the resources through statistical multiplexing.

"While statistical multiplexing leads to optimal utilisation of network resources and associated cost savings, it does so by compromising the overall QoS offered to the end users," observes Yoges. "Delay, jitters and the packet loss experienced in a network are some of the key features that require close attention while establishing a QoS."

Researchers in Italy have formulated a QoS framework for mixed-technology networks at all levels of the integration from the hardware layer to the application service. This is expected to provide wider roaming agreements between converged access networks.

Although the guaranteed QoS must be available to the user at all circumstances, several external disturbances such as unexpected surge in traffic could degrade the QoS offered by the network.

"Traffic disruptions include those events that initiate a large variation in network traffic characteristics," adds Yoges. "In order to maintain the desired QoS, it becomes necessary to have unique methods for detecting and reacting to such disruptions."

In France, researchers are using network management for regulating the QoS. Such a process is likely to optimise the use of network resources in controlling traffic and improving the related QoS for all applications, from streaming to videoconferencing and realtime control-command. Apart from a QoS, standardisation has also become essential to drive uptake of voice and video over IP. While SIP has emerged as a clear favourite, H.323 is not to be underestimated given the large installed base of H.323-enabled devices both in the carrier as well as enterprise segments.

In Europe, both carriers and service providers are rolling out cutting-edge voice, video, data and fixed and cellular converged services for both residential and enterprise customers. Most of these products are software modules that can be interchanged with other modules and can enable the highest level of seamless communications across domains, irrespective of the carrier involved.

In Israel, a high-end video- and audio-conferencing device has been developed, which includes the latest video and audio algorithms, streaming functionality and built-in content. It facilitates video call forward, call transfer and pick-up, and can be used as a standalone software module or with a camera/microphone.

Typical customers for such a desktop videoconferencing product include organisations with large IP networks that need to constantly communicate on projects or training programmes across multiple locations.

"In the long run, IP is expected to provide better value-added services compared to traditional telephone networks. The onus is on the vendors to educate end users regarding the productivity benefits that offset the high initial cost throughout the economic useful life of IP deployments," says Yoges.

Functionalities such as click-to-call, push-to-talk, push-to-talk over cellular, presence, ad-hoc conferencing and instant messaging are expected to drive the IP industry forward and revolutionise the way enterprises work in the coming years.

Technical Insights is an international technology analysis business that produces a variety of technical news alerts, newsletters, and research services.

For more information contact Kristina Menzefricke,

  Share on Facebook Share via Twitter Share via LinkedIn    

Further reading:

  • Electronics news digest
    26 June 2019, News
    South Africa • South Africa is looking to take on a leading role in the international space weather monitoring community. Space weather events are capable of seriously disrupting modern technologies ...
  • Clearing the static: ESD testing and monitoring – Part 2
    26 June 2019, Altico Static Control Products, News
    Once you’ve identified an ESD protected area (EPA) and the combination of ESD (electrostatic discharge) control products your facility requires, continuous testing and monitoring need to be conducted. ...
  • AI on a chip
    26 June 2019, News
    Researchers have created a machine learning library programmed in C that can run on microcontrollers, and on other platforms such as PCs, Raspberry PI and Android.
  • From the editor’s desk: Local developments using solar power
    26 June 2019, Technews Publishing, News
    It’s always great to see local developers doing good work, and Dataweek always enjoys getting a chance to feature them. Sadly, people seldom share with us the interesting things they’re working on, whether ...
  • CSIR pushes to localise technologies
    26 June 2019, News
    The Council for Scientific and Industrial Research (CSIR) has pledged to work closely with the private sector and innovation partners in developing and localising technologies to support the advancement ...
  • SIMCom product seminar to be held next week
    26 June 2019, Otto Wireless, News
    Otto Wireless Solutions, in conjunction with SIMCom, will be hosting an informative half-day seminar at Riversands, Fourways on 10 July 2019. In addition to a brief product presentation by Otto Wireless ...
  • Demand for local products highlighted at LME expo
    26 June 2019, News
    The Local Southern African Manufacturing Expo (LME), held in Johannesburg in late May, managed to draw a respectable 3473 visitors in its first ever outing. “The Expo was the culmination of a vision that ...
  • Electronics news digest
    29 May 2019, News
    South Africa • South Africa will soon join the World Economic Forum’s (WEF) Centre for the Fourth Industrial Revolution Network (C4IR Network) alongside China, India and Japan by launching an affiliate ...
  • Clearing the static: ESD testing and monitoring - Part 1
    29 May 2019, Altico Static Control Products, News
    Static energy is an unseen threat, and the only way of knowing how to control it is by testing. Depending on your industry and application, there will be specific resistivity requirements that will govern ...
  • From the editor’s desk: US-China trade war hits chip makers
    29 May 2019, Technews Publishing, News
    The escalating trade war between the US and China has the global economy on high alert, and unless things normalise soon it is going to have massive ramifications on many industries. Following US president ...
  • Otto Wireless scoops two new agencies
    29 May 2019, Otto Wireless, News
    Otto Wireless Solutions has recently been appointed as the official distributor for two overseas manufacturers of RF and microwave components: Taiwanese microwave ceramic components designer and manufacturer, ...
  • Actum acquires Band-It business in South Africa
    29 May 2019, Actum Electronics, News
    The Actum Group has acquired Banding and Identification Solutions Africa (BISA), the leading distributor of Band-It clamping and fastening products in South Africa. The transaction, which was finalised ...

Technews Publishing (Pty) Ltd
1st Floor, Stabilitas House
265 Kent Ave, Randburg, 2194
South Africa
Publications by Technews
Dataweek Electronics & Communications Technology
Electronics Buyers’ Guide (EBG)

Hi-Tech Security Solutions
Hi-Tech Security Business Directory

Motion Control in Southern Africa
Motion Control Buyers’ Guide (MCBG)

South African Instrumentation & Control
South African Instrumentation & Control Buyers’ Guide (IBG)
Terms & conditions of use, including privacy policy
PAIA Manual


    Classic | Mobile

Copyright © Technews Publishing (Pty) Ltd. All rights reserved.