If low-rate VoIP is transmitted over congested links, both the coding and the packet rate need to be adapted to achieve the best conversational quality: On an Ethernet network it is better to jointly change packet rate and speech coding rate; in WLAN networks it is sufficient to change the packet rate. The paper also studies whether TCP-friendly rate control algorithms are suitable for dynamically adapting packet and coding rate of a VoIP flow. The results show that cannot be used for VoIP applications as they only control the packet rate do not consider packet sizes. Also, they do not transmit small (speech) packets fairly.
Did you find this white paper useful?
4 out of 11 users found this white paper useful
Related white papers
Is Now the Time to Migrate to IP Telephony? Re-evaluating the Risks and Rewards
If your business finds itself with one or more aging digital PBXs, you are facing the challenge of deciding when a migration to a new telephony environment makes sense for...
Live Webcast: Telecoms 2.0 - Where is telecoms heading?
Telecoms 2.0 - Where is telecoms heading? UK telecoms is at a crossroads. IT managers face new demands to enable flexible working, deliver converged networks and provide support for multiple applications...
Telecom Wireless: Super Integrated DSP Engine for 3G Basestations
This is part of a set of projects for a world leading IDM (independent device manufacturer), aiming at developing chipsets for UMTS base station equipment. The goal of this project...
Anthony & Sylvan Pools Takes the Plunge with VoIP
Anythony Sylvan Pools deployed ShoreTel to 14 divsions including 50 sites and 500 users. With its rapid growth and increasing communications costs, Anthony & Sylvan started looking at VoIP solutions. While...
Keeping Pace with Expansion through Voice Services
While a company grows, its phone systems must be able to sustain itself to accommodate the expansion. Unfortunately, many systems that have been in use for years within organizations...
TechRepublic Resource Guide - IP-PBX Technical Strategies
This TechRepublic Resource Guide lists useful strategies for deploying an IP PBX. Download this guide to learn more about: How you can easily make the switch to IP PBX The pros and cons...
TechRepublic Resource Guide - VoIP Best Practices
This TechRepublic Resource Guide will help you determine what you need to know to get the most out of your VoIP system. Download this guide to learn more about: Advanced VoIP...
