You are here: silicon.com > Resources > White Papers > Networking and Communications > Network Technologies > VoIP - IP Telephony

VoIP - IP Telephony White Papers

Comparison of Modified Dual Queue and EDCA for VoIP Over IEEE 802.11 WLAN

Tags:
voip - ip telephony

Overview The popular IEEE 802.11 WLAN today does not provide any Quality-of-Service (QoS) because of its contention-based channel access nature of the Medium Access Control (MAC). Therefore, this paper proposes a simple software upgrade-based solution, called a dual queue scheme, to provide QoS to real-time services such as Voice-over-IP (VoIP) in the previous work. The dual queue scheme operates on top of the legacy MAC. This paper presents a Modified Dual Queue (MDQ) scheme by considering a practical implementation limitation. On the other hand, the emerging 802.11e MAC includes a contention-based channel access mechanism, called Enhanced Distributed Channel Access (EDCA). Prioritized channel accesses are provided to different traffic classes under EDCA.

Further White Paper Details
Publisher	Seoul National University	File Format	PDF
Date Published	March 2006
Format	White Papers
Topics	VoIP - IP Telephony, Local Area Networks (LAN), Wireless LAN

Did you find this white paper useful? 1 out of 2 users found this white paper useful

Why now is the time to integrate VoIP in SMB networks

Publisher:
IBM

Anthony & Sylvan Pools Takes the Plunge with VoIP

Publisher:
Shoretel

TechRepublic Resource Guide - IP-PBX Technical Strategies

Publisher:
TechRepublic

Tags:
voip - ip telephony

TechRepublic Resource Guide - VoIP Best Practices

Publisher:
TechRepublic

Tags:
voip - ip telephony

Communications Enabled Business Process Software

Publisher:
SDC Solutions

Tags:
voip - ip telephony

HP hails channel scheme success

The survey, carried out with IT wholesalers in five countries, measured the returns on investment of channel partners participating in HP's Top Value PC supply-chain programme and its Air printer and scanner scheme.

Channel:
IT Director

BT cuts line costs for ISPs

Concerns have also been raised about the service's anti-competitive nature, as it may force ISPs to switch telco provider to take advantage of the offer. In addition, the offer will only be available to ISPs connecting more than 10,000 ports...

Channel:
Broadband & ISPs

The Bloor Perspective: Public sector IT, e-tail fulfilment, Radombet.com

Due to the nature of the product, suppliers of perishable items locate their fulfilment centres locally to the consumer. Another possible channel may be to revitalise the role of the milkman. Coming on top of the scheme for electronic filing of tax...

Channel:
Comment & Analysis

Capita gets capital traffic scheme

Transport for London estimates the charging scheme will reduce traffic in central London by 10 to 15 per cent, slashing time spent in jams by 20 to 30 per cent, and raise £130m to £150m in revenue. The IT contracts for London's controversial...

Channel:
IT Director

Niklas Zennström: Telecoms troublemaker

Versions are available for Windows, Mac, Linux and Pocket PC. You change the nature of the game and you get the advantage. The peer-to-peer, or distributed, networking model - as opposed to a centralised server - also helps data move along quickly...

Channel:
VoIP
Tags:
niklas zennstrom,
skype,
voip

Cisco grabs IronPort for $830m

Richard Palmer, senior vice president of Cisco's Security Technology Group, said in a statement: "We feel there is enormous potential for enhanced email and message protection solutions to be integrated into the existing Cisco self-defending...

Live Webcast: Telecoms 2.0 - Where is telecoms heading?

In this webcast, our panel of experts will review where we are with next generation telecoms in the UK, working through the concept of 'Telecoms 2.0': - Realising the potential of Next Generation Networks - why it isn't just about the technology? - What attributes should firms be looking for in their telco partner? - Is the relationship between telco provider and customer changing? - What things need to happen to make next generation services a reality? - You say you want the supplier to change. Do you want to change too? - What is Telecoms 2.0?

Publisher:
ZDNet UK

Telecom 2.0: Mind over matter

ntl:Telewest Business believes that the role of the telco is evolving. Gone are the days when it was enough to simply focus on circuits and minutes, customers now need a far higher degree of interaction and look for suppliers who will talk business solutions with them.

Publisher:
ntl:Telewest Business

IBM Information Server Change Data Capture

In today's fast-paced world, access to real-time data has never been more important. To be successful, organizations need to be able to report and analyze corporate data quickly and easily, regardless of what applications created the data, what platform they're running on, or what database they're stored in.

Publisher:
IBM

An examination of server consolidation: the trends that can drive efficiencies and help businesses gain a competitive edge

This white paper provides a starting point for organizations contemplating server consolidation. It includes an overview of server consolidation concepts and techniques and provides guidance on methodologies. It also looks at the potential cost savings associated with server consolidation and offers information on how organizations can sustain the advantage they have gained by consolidating their servers.

Publisher:
IBM

Also on silicon.com

Site Navigation:

VoIP - IP Telephony White Papers

Comparison of Modified Dual Queue and EDCA for VoIP Over IEEE 802.11 WLAN

Quick Sitemap Links:

About Us

Search

Blogs

Verticals

Advertising Features

CNET Networks in Europe

CNET Networks in the United States

CNET Networks in Asia Pacific